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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 10037. Отображено 200.
20-04-2008 дата публикации

СИСТЕМА И СПОСОБ ДЛЯ ОБРАБОТКИ ОБЪЕКТОВ С ИСПОЛЬЗОВАНИЕМ ЛАЗЕРА

Номер: RU2322334C2

Изобретение относится к системе и способу лазерной обработки и может быть использовано для маркировки, сварки, сверления, резания и тепловой обработки различных конструкций в машиностроении. Система содержит устройство подачи объектов с предварительным расположением их на опорной поверхности, поддон для опоры объектов, гальванометрическую головку, лазерный источник и компьютер. Гальванометрическая головка состоит из первой широкоугольной камеры с фокусирующей линзой и с первым фильтром, расположенным на выходе первой камеры, второй узконаправленной камеры с фокусирующей линзой и со вторым фильтром, расположенным на выходе второй камеры, направляющего зеркала, гальванометрических отклоняющих зеркал и линзы, которая отображает, по меньшей мере, один объект, расположенный на поддоне. В компьютере установлено программное обеспечение распознавания формы для контролирования работы указанной первой камеры, указанной второй камеры, указанного лазерного источника и средств управления перемещением ...

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27-07-2005 дата публикации

УСТРОЙСТВО ДЛЯ ФОРМИРОВАНИЯ РИСУНКОВ

Номер: RU2257603C2

Использование: изобретение относится к устройству, предназначенному для создания рисунка с чрезвычайно высоким разрешением на заготовке, например, такого как рисунок на полупроводниковом чипе с линиями шириной 50 мм. Сущность изобретения: устройство содержит источник для испускания электромагнитного излучения в диапазоне длин волн 100 нм и ниже, пространственный модулятор, имеющий множество пикселей, электронную систему обработки и подачи данных, принимающую цифровое описание рисунка, подлежащего записи, выделяющую из него последовательность частичных рисунков, преобразующую упомянутые частичные рисунки в сигналы модулятора и подающую упомянутые сигналы в модулятор, и прецизионную механическую систему для перемещения упомянутой заготовки и/или проекционной системы друг относительно друга. Оно также содержит электронную систему управления, координирующую перемещение заготовки, подачу сигналов в модулятор и интенсивность излучения, так, чтобы упомянутый рисунок сшивался вместе от частичных ...

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10-07-2004 дата публикации

УСОВЕРШЕНСТВОВАННЫЙ ГЕНЕРАТОР РИСУНКОВ

Номер: RU2232411C2

Использование: в печати рисунков с высокой точностью на фоточувствительных поверхностях, а также при непосредственной записи рисунков, и, кроме того, в других видах прецизионной печати. Технический результат изобретения: однородность изображения от пикселя к пикселю, повышение яркости и стабильности изображения. Сущность: настоящее изобретение относится к устройству для создания рисунка на заготовке, чувствительной к излучению, например, такой как фотошаблон, панель дисплея или микрооптический прибор. Устройство содержит источник излучения и пространственный модулятор света (ПМС), имеющий множество модулирующих элементов (пикселей). Оно также содержит электронную систему обработки и подачи данных, подающую возбуждающие сигналы в модулятор, прецизионную механическую систему для перемещения упомянутой заготовки и электронную систему управления, координирующую перемещение заготовки, подачу сигналов в модулятор и интенсивность излучения так, чтобы упомянутый рисунок сшивался из частичных изображений ...

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10-01-2017 дата публикации

СПОСОБ УПРАВЛЕНИЯ ПРОЦЕССОМ ЛАЗЕРНОЙ РЕЗКИ И УСТРОЙСТВО ЛАЗЕРНОЙ РЕЗКИ ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Номер: RU2607502C2
Принадлежит: АДИДЖЕ С.п.А. (IT)

Группа изобретений относится к способу и устройству для лазерной резки. Согласно настоящему изобретению процессом лазерной резки управляют, используя в качестве опорного сигнала одну или несколько линий спектра испускания, характерных для излучения, испускаемого вспомогательным газом или газообразной примесью, находящейся в объеме материала, облучаемого сфокусированным лазерным лучом, сфокусированным лазерной головкой (12), при этом на основании определенного сигнала проводится корректировка по меньшей мере одного из следующих контролируемых параметров: мощность лазерного излучения, частота и коэффициент заполнения лазерных импульсов, давление вспомогательного газа, испускаемого соплом (16), являющимся частью лазерной головки (12), скорость перемещения лазерной головки (12) относительно заготовки (P), расстояние между лазерной головкой (12) и поверхностью (S) заготовки (P), и расстояние между фокусом (F) лазерного луча и поверхностью (S) заготовки (P). Техническим результатом является улучшение ...

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25-01-2017 дата публикации

СПОСОБ СКАНИРОВАНИЯ ТРУБЫ, ПРЕДНАЗНАЧЕННОЙ ДЛЯ ОБРАБОТКИ НА СТАНКЕ ДЛЯ ЛАЗЕРНОЙ РЕЗКИ, С ИСПОЛЬЗОВАНИЕМ ДАТЧИКА ДЛЯ ИЗМЕРЕНИЯ ИЗЛУЧЕНИЯ, ОТРАЖЕННОГО ИЛИ ИСПУСКАЕМОГО ТРУБОЙ

Номер: RU2608868C2
Принадлежит: АДИДЖЕ С.п.А. (IT)

Изобретение относится к способу сканирования трубы, предназначенной для обработки на станке для лазерной резки. Способ включает этапы, на которых: а) излучают посредством режущей головки (50) станка для лазерной резки сфокусированный лазерный луч таким образом, чтобы не происходила резка или вытравливание материала трубы (Т); b) передвигают режущую головку (50) вдоль заданного направления (х) сканирования; и с) во время перемещения режущей головки (50) вдоль направления (х) сканирования детектируют посредством соответствующих датчиков (56) излучения, отраженное или излучаемое трубой (Т), и устанавливают последовательно точка за точкой, на основе сигнала, предоставляемого датчиками (56), присутствие или отсутствие материала трубы (Т). Изобретение позволяет измерять положение точки реза на поверхности трубы независимо от положения трубы на станке для лазерной резки и от формы трубы. 5 з.п. ф-лы, 8 ил.

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20-04-2007 дата публикации

ЛАЗЕРНЫЙ РАСПИЛОВОЧНЫЙ СТАНОК ДЛЯ АЛМАЗОВ

Номер: RU2297325C2

Изобретение относится к новому лазерному станку для распиливания алмазов. Техническим результатом является повышение качества и скорости распиливания алмазов. Для этого станок состоит из источника лазерного излучения, интерфейса центрального навигационного вычислительного устройства (числового программного управления CNC), системы подачи луча, переключающего высокочастотного драйвера модулятора добротности лазера, блока для охлаждения, камеры замкнутой телевизионной системы и прибора с зарядной связью (CCTV & CCD), блока подачи энергии, серво-стабилизатора и блока компьютера. 20 з.п. ф-лы, 9 ил.

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14-11-2017 дата публикации

УСТРОЙСТВО КОНТРОЛЯ СВАРНОГО УЧАСТКА И СПОСОБ ЕГО КОНТРОЛЯ

Номер: RU2635588C2

Изобретение относится к области сварочного производства с использованием лазерного луча и может быть использовано для контроля наличия дефектов сварного участка. Сварочный лазерный луч (L1) излучают вдоль зоны (C11, C12) сварки, расположенной на свариваемых деталях (W1, W2), а также могут излучать и контрольный лазерный луч (L5) вдоль зоны (С51, С52) сканирования, расположенной в ванне расплава (Y1) на свариваемых деталях (W1, W2), которые расплавляют с помощью излучения сварочного лазерного луча (L1). При этом принимают ответное световое излучение из зоны сварки, а контроль наличия дефектов сварного участка осуществляют путем сравнения частоты изменения интенсивности принятого светоприемным узлом ответного светового излучения, получаемой в результате преобразования Фурье или дифференцирования упомянутой интенсивности, с особой частотой, определяемой частотой колебания поверхности ванны расплава при бездефектном состоянии сварного участка. Использование изобретения позволяет повысить точность ...

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20-10-2005 дата публикации

ЛАЗЕРНЫЙ РАСПИЛОВОЧНЫЙ СТАНОК ДЛЯ АЛМАЗОВ

Номер: RU2004112773A
Принадлежит:

... 1. Лазерный распиловочный станок для алмазов, состоящий из источника лазерного излучения, интерфейса центрального навигационного вычислительного устройства (числового программного управления CNC), системы подачи луча, высокочастотного переключающего драйвера модулятора добротности лазера, блока охлаждения, камеры замкнутой телевизионной системы и прибора с зарядной связью (CCTV & CCD), блока подачи энергии, серво-стабилизатора и блока компьютера. 2. Лазерный распиловочный станок для алмазов по п.1, в котором источник лазерного излучения состоит из лазерной головки, переключающего модулятора добротности лазера, диафрагмы, переднего и заднего зеркала, модулятора безопасности лазера и расширителя луча. 3. Лазерный распиловочный станок для алмазов по п.2, в котором переключающий модулятор добротности используется для сохранения световой энергии лазера для излучения в виде вспышки с высокой пиковой мощностью. 4. Лазерный распиловочный станок для алмазов по п.2, в котором диафрагма контролирует ...

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10-01-2007 дата публикации

СПОСОБ ОСЛАБЛЕНИЯ ЭЛЕМЕНТА ОБЛИЦОВКИ АВТОМОБИЛЯ ДЛЯ ПОЛУЧЕНИЯ ОКНА ДЛЯ РАЗВЕРТЫВАНИЯ ПНЕВМОПОДУШКИ БЕЗОПАСНОСТИ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Номер: RU2005120493A
Принадлежит:

... 1. Способ ослабления элемента облицовки автомобиля, покрывающего устройство с пневмоподушкой, причем упомянутое устройство с пневмоподушкой содержит пневмоподушку, выполненную с возможностью ее накачивания и развертывания при фиксировании столкновения, при этом упомянутое ослабление обеспечивает формирование окна для развертывания пневмоподушки в упомянутом устройстве под действием давления, создаваемого развертыванием пневмоподушки, при этом элемент облицовки имеет по меньшей мере один слой, причем способ включает в себя следующие этапы: выполнение частичного врезания в поверхность элемента облицовки посредством направления режущего луча от источника режущего луча на упомянутую поверхность и перемещения элемента облицовки относительно режущего луча в соответствии с заданным рисунком ослабления; генерирование первого и второго измерительных лучей от первого датчика и второго датчика соответственно, и направление первого и второго измерительных лучей к соответствующим противоположным сторонам ...

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14-04-2020 дата публикации

СПОСОБ ЛАЗЕРНОЙ ОЧИСТКИ ОТ ОКАЛИНЫ ДВИЖУЩЕГОСЯ МЕТАЛЛИЧЕСКОГО ПРОДУКТА И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Номер: RU2718819C1
Принадлежит: АПЕРАМ (LU)

Изобретение относится к способу лазерной очистки от окалины поверхности движущегося металлического продукта, имеющей слой окислов, и устройству для его осуществления. По меньшей мере один первый лазер (6) направляет луч (7), который отражается от окисленной поверхности продукта, подлежащего очистке от окалины. Указанные лучи (9), отраженные окисленной поверхностью, принимаются датчиками (8), которые передают собранную ими информацию в блок (10) обработки. Блок (10) обработки рассчитывает поглощение луча (7) поверхностью продукта, выводит излучательную способность окисленной поверхности в направлении указанных отраженных лучей (9) и устанавливает соотношение между этой излучательной способностью и информацией по исходным данным, предварительно записанной в блок (10) обработки. По меньшей мере один второй лазер (13) направляет луч (14) на поверхность продукта для удаления с него окалины, причем пятна указанных лучей (14) покрывают всю поверхность, подлежащую очистке от окалины, используя ...

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15-01-2020 дата публикации

УСТРОЙСТВО И СПОСОБ РАЗЪЕДИНЕНИЯ БАНДЕРОЛИ

Номер: RU2711224C1

Устройство содержит деформирующее устройство, которое изгибает пачку таким образом, что участок бандероли приподнимается относительно пачки, и разделяющее устройство, которое по меньшей мере частично рассекает бандероль в области приподнятого относительно пачки участка при помощи лазерного луча. При этом устройство содержит по существу непроницаемый для электромагнитного излучения затемняющий элемент, который расположен между приподнятым относительно пачки участком бандероли и пачкой, причем затемняющий элемент выполнен по меньшей мере для частичного поглощения электромагнитного излучения. Изобретением является и система обработки ценных документов с использованием вышеописанного устройства. Группа изобретений обеспечивает повышение качества разъединения бандероли. 2 н. и 7 з.п. ф-лы, 7 ил.

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20-11-2015 дата публикации

УСТРОЙСТВО И СПОСОБ РЕЗАНИЯ ЛАЗЕРОМ С АВТОМАТИЧЕСКИМ РЕГУЛИРОВАНИЕМ ИМПУЛЬСОВ ГАЗА ПО ЧАСТОТЕ ИЛИ ПО ДАВЛЕНИЮ

Номер: RU2014118952A
Принадлежит:

... 1. Способ автоматического резания при помощи лазера, включающий в себя нагнетание потока газа в место резания, чтобы удалять шлаки и газы, производимые в ходе резания, при этом нагнетание осуществляют импульсами, отличающийся тем, что непрерывно измеряют интенсивность обратного рассеяния света лазера и изменяют либо частоту, либо давление, либо одновременно частоту и давление импульсов, поддерживая эту интенсивность на минимуме.2. Способ автоматического резания по п. 1, отличающийся тем, что частоту или давление меняют пошагово.3. Способ автоматического резания по п. 2, отличающийся тем, что значение шага частоты составляет от 1 Гц до 3 Гц.4. Способ автоматического резания по п. 2, отличающийся тем, что шаги давления имеют значение меньше 1 бар.5. Способ автоматического резания по любому из пп. 1-4, отличающийся тем, что частота или давление находится в пределах, и при достижении пределов производят увеличение мощности лазера.6. Способ автоматического резания по п. 3, отличающийся тем, ...

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20-03-2007 дата публикации

СИСТЕМА И СПОСОБ КОНТРОЛЯ КАЧЕСТВА

Номер: RU2005128590A
Принадлежит:

... 1. Система контроля промышленных процессов, содержащая сенсорное средство (17) для детектирования одного или более параметров процесса на по меньшей мере одном посту (20) процесса, средство (32) сбора и обработки, работающее по сигналам (R), сформированным сенсорными средствами (17) для получения информации (Q) о качестве процесса, и средство (19) для управления производственным потоком, работающее на основе информации (Q) о качестве процесса, отличающаяся тем, что средство (32) сбора и обработки размещено локально на по меньшей мере одном посту (20) процесса, причем средство (19) управления производственным потоком расположено удаленно относительно средства (32) сбора и обработки и снабжено средством (42, 43) беспроводного приемопередатчика для обмена информацией (Q) о качестве процесса между средством (32) сбора и обработки и средством (19) управления производственным потоком. 2. Система по п.1, отличающаяся тем, что средство (42, 43) беспроводного приемопередатчика предназначено для ...

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21-06-2007 дата публикации

Divergence compensator for laser micro processing station comprises two or more tilted mirror systems each comprising three mirrors arranged in stepped formation

Номер: DE202005021173U1
Автор:
Принадлежит: 3D MICROMAC AG, 3D-MICROMAC AG

The divergence compensator comprises at least two tilted mirror systems each formed from three mirrors mounted in step formation. The laser micro processing station (1) comprises a UV laser with a wavelength of less than 200 nm, a beam forming device, a device for copying the laser beam onto the substrate being processed and a probe positioning system mounted in a processing chamber (5).The beam forming device can include a beam combiner.

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04-06-2020 дата публикации

Geregeltes Pulverauftragsschweißverfahren

Номер: DE102018130798A1
Принадлежит:

Laserauftragschweißverfahren, wobei auf einer Oberfläche (46) zur Herstellung einer Beschichtungsschicht (60) ein Schmelzbad (56) umfassend zumindest einen geschmolzenen Zusatzwerkstoff mittels eines auf das Schmelzbad (56) einstrahlenden Laserstrahls (18) erzeugt wird, wobei ein der Zusatzwerkstoff mittels des Laserstrahls (18) in einem Abstand zum Schmelzbad (56) geschmolzen wird, sodass der Zusatzwerkstoff dem Schmelzbad (56) in vollständig geschmolzener Form zugeführt wird, wobei der Einstrahlpunkt (53) des Laserstrahls (18) auf die Oberfläche entlang der Oberfläche mit einer Relativgeschwindigkeit von mindestens 20 m/min bewegt wird, wobei zumindest zeitweise mittels einer Messeinrichtung (48) eine Schichtdicke (d) und/oder eine Oberflächeneigenschaft der hergestellten Beschichtungsschicht (60) erfasst wird, wobei eine Aktion ausgelöst wird, wenn die erfasste Schichtdicke (d) und/oder die Oberflächeneigenschaft von einer Soll-Größe abweicht.

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05-08-2021 дата публикации

Verfahren und Vorrichtung zum Durchführen und Überwachen eines Bearbeitungsprozesses eines Werkstücks

Номер: DE102020000636A1
Принадлежит:

Die Erfindung betrifft ein Verfahren zum Durchführen und Überwachen eines Bearbeitungsprozesses eines Werkstücks (10), insbesondere eines Schweißprozesses zum Verbinden des Werkstücks (10) mit einem weiteren Werkstück (12), mittels eines hochenergetischen Bearbeitungsstrahls (14), wobei das Verfahren die Schritte umfasst: Erzeugen eines hochenergetischen Bearbeitungsstrahls (14); Projizieren und/oder Fokussieren des Bearbeitungsstrahls (14) auf das Werkstück (10), wobei nach Maßgabe eines zeitabhängigen Bearbeitungssteuersignals zu unterschiedlichen Bearbeitungszeitpunkten unterschiedliche Bearbeitungsbereiche des Werkstücks (14) bearbeitet werden; Erzeugen eines Messstrahls (16) mittels eines optischen Kohärenztomographen (18), wobei der Messstrahl (16) in den Bearbeitungsstrahl (14) einkoppelbar ist; Bestimmen von Messpunkten (20) während des Bearbeitungsprozesses mittels des optischen Kohärenztomographen (18) unter Verwendung des Messstrahls (16) nach Maßgabe eines zeitabhängigen Messsteuersignals ...

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23-06-2016 дата публикации

Vorrichtung zur generativen Herstellung eines Bauteils

Номер: DE102014226243A1
Принадлежит:

Die Erfindung betrifft eine Vorrichtung (10) zur generativen Herstellung eines Bauteils (12), umfassend mindestens einen Beschichter (14) zum Erzeugen einer Pulverschicht (16) auf einer Bauplattform (18), mindestens eine Strahlungsquelle (20), insbesondere einen Laser, zum Erzeugen eines Hochenergiestrahls (24), mittels welchem die Pulverschicht (16) in einer Baufläche (22) lokal zu einer Bauteilschicht (30) verschmelzbar und/oder versinterbar ist, mindestens eine Ablenkeinrichtung (26), mittels welcher der Hochenergiestrahl (24) auf unterschiedliche Bereiche der Pulverschicht (16) ablenkbar und auf die Baufläche (22) fokussierbar ist, mindestens ein Messsystem (28), mittels welchem eine Querschnittsgeometrie des Hochenergiestrahls (24) auf der Pulverschicht (16) und/oder der Bauteilschicht (30) ermittelbar ist, und mindestens eine Ausgleichseinrichtung (32). Die Ausgleichseinrichtung (32) ist dazu ausgebildet, anhand der Querschnittsgeometrie des Hochenergiestrahls (24) eine Fokusfläche ...

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29-09-1977 дата публикации

LASEROPTISCHES GERAET FUER OPERATIONEN UNTER EINEM MIKROSKOP

Номер: DE0002710995A1
Автор: TOGO TAKASHI, TOGO,TAKASHI
Принадлежит:

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21-02-2019 дата публикации

Schweißverfahren für Karosserieteile

Номер: DE102017214549A1
Принадлежит:

Die Erfindung betrifft ein Verfahren zum Fertigen eines Karosserieteils, insbesondere für eine Fahrzeugtür oder eine Heckklappe, aus mindestens zwei Blechteilen, die jeweils einen randseitigen durch eine Schnittkante begrenzten flachen Flanschbereich aufweisen. Bei dem Verfahren werden die Flanschbereiche der beiden Blechteile unter Bildung eines Überlappstoßes teilweise überlappend miteinander in Anlage gebracht und durch eine sich benachbart zu den Schnittkanten der Blechteile erstreckende Schweißnaht verbunden.

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01-12-2005 дата публикации

Erzeugung und Anwendung von effizienten Festkörperlaser-Pulszügen

Номер: DE112004000220T5
Автор: YEIK GLENN, YEIK, GLENN
Принадлежит: TRIMEDYNE INC, TRIMEDYNE, INC.

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10-09-2009 дата публикации

Laserbohrsystem

Номер: DE0060328636D1
Принадлежит: OSMOTICA CORP, OSMOTICA CORP.

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10-06-2021 дата публикации

LASERSTRAHLANPASSUNGSSYSTEM UND LASERBEARBEITUNGSVORRICHTUNG

Номер: DE102020215369A1
Принадлежит:

Ein Laserstrahlanpassungssystem zum Anpassen eines Laserstrahls zu parallelem Licht. Das System beinhaltet eine Strahlanpassungseinheit, die mehrere Linsen aufweist, die in einem optischen Pfad des Laserstrahls angeordnet sind und einen ersten und zweiten Spiegel, der den Laserstrahl reflektiert, der durch die Strahlanpassungseinheit gelaufen ist, erste und zweite Kameras, die dazu ausgestaltet sind, Bilder eines ersten Lichts, das durch den ersten Spiegel gelaufen ist, und eines zweiten Lichts, das durch den zweiten Spiegel gelaufen ist, aufzunehmen, Berechnungsabschnitte, die dazu ausgestaltet sind, erste und zweite Strahldurchmesser des ersten Lichts und des zweiten Lichts aus den Bildern, die durch die erste und zweite Kamera aufgenommen wurden, zu berechnen und einen Linsenanpassungsabschnitt, der dazu ausgestaltet ist, eine der Linsen der Strahlanpassungseinheit in einer Richtung parallel zu dem optischen Pfad des Laserstrahls zu bewegen, sodass die ersten und zweiten Strahldurchmesser ...

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20-02-1992 дата публикации

VERFAHREN UND VORRICHTUNG ZUR MATERIALBEARBEITUNG MIT HILFE EINES LASERS.

Номер: DE0003775931D1

A detector receives scattered radiation and the course of the function in time is assessed and used to control the laser beam. The laser (1) passes its pulses via a high-speed optical switch (2) to the optics (3). The output extends via an optical fibre (6) to the workpiece (M). The system (3) includes a semitransparent mirror (4) and a first lens (5) for focusing. The second lens focuses reflected light to the detector. A processor (9) has two threshold detectors which control through logic circuits (10) both the laser (11) and the optical switch (12).

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02-01-2009 дата публикации

Vorrichtung zum Bearbeiten eines Werkstücks mittels eines Laserstrahls

Номер: DE102007028504A1
Принадлежит:

Die Erfindung betrifft eine Vorrichtung zum Bearbeiten eines Werkstücks mittels eines Laserstrahls, umfassend ein Optikgehäuse (1), eine daran angebrachte Aufnahme (2) zur Ankopplung einer Laserstrahlung übertragenden Lichtleitfaser, einen Kollimationsspiegel (3) und einen Fokussierspiegel (4). Erfindungsgemäß weisen der Kollimationsspiegel und der Fokussierspiegel jeweils eine Spiegelfläche in Form eines Off-Axis-Parabolids auf. Der Mittelpunkt der Endfläche (7) der Lichtleitfaser liegt dabei auf oder in der Nähe des Brennpunktes des Kollimationsspiegels (3). Dementsprechend fokussiert der Fokussierspiegel den Laserstrahl (5) auf oder in die Nähe des Brennpunktes des Fokussierspiegels (4). Vorzugsweise ist der Fokussierspiegel so angeordnet, dass in einer Spiegelsymmetrieebene des Kollimationsspiegels liegende Einzelstahlen des auf den Kollimationsspiegel einfallenden Laserstrahlengangs in einer Spiegelsymmetrieebene des Fokussierspiegels liegen und die von der Rotationssymmetrieachse ...

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01-07-2004 дата публикации

Verfahren und Vorrichtung zum Laserschneiden

Номер: DE0010261667A1
Принадлежит:

Es werden ein Verfahren und eine Vorrichtung zum Laserschneiden eines Werkstücks (3) durch Führung eines Laserstrahls (6, 8) längs einer vorgewählten Schnittlinie (10) beschrieben, in deren Bereich sich während des Schneidvorgangs ein in der Bewegungsrichtung des Laserstrahls (6, 8) fortschreitendes Plasma (23) bildet. Erfindungsgemäß wird das Plasma (23) kontinuierliche beobachtet, und eine beobachtete Eigenschaft des Plasmas (23) wird mit der Qualität des ausgeführten Schneidvorgangs in Beziehung gesetzt (Fig. 1).

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06-10-2011 дата публикации

Verfahren zum Betrieb einer Vorrichtung zur Materialbearbeitung und Vorrichtung

Номер: DE102010013914A1
Принадлежит:

Die Erfindung betrifft ein Verfahren zum Betrieb einer Vorrichtung zur Materialbearbeitung von Werkstücken mittels Laser (10), insbesondere einer Laserschweißvorrichtung, bei welchem Verfahren mittels wenigstens eines Erfassungsmittels (17) zumindest ein den Bearbeitungsprozess charakterisierendes optisches Merkmals erfasst wird und durch wenigstens eine Datenverarbeitungseinheit (19) anhand des vom optischen Merkmal abgeleiteten Regelsignal (&rh zur Regelung der Prozessenergie () erzeugt wird. Um ein Verfahren zur Materialbearbeitung mittels Laser zur Verfügung zu haben, bei welchem unter Verhinderung negativer Auswirkungen auf das bearbeitete Werkstück (i) auf einfache Weise eine Prozessregelung durchgeführt wird, die trotz beschränkten Wertebereiches des Regelsignals (Merkmal()) stabil in demjenigen Sinne ist, dass sie jederzeit zu der Prozessenergie () zurückkehrt, bei der das den Prozess charakterisierende Merkmal seinen Zustand ändert, und, solange sich der Prozess in der Nähe der ...

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30-04-2015 дата публикации

Vorrichtung zum Bearbeiten von Werkstücken mit einem Laser

Номер: DE102011119620B4

Vorrichtung zum Bearbeiten von Werkstücken mit einem Laser und unter Einsatz zumindest eines Mikroskops, aufweisend zumindest einen Laserkopf, der einen Laserstrahl mit einer Wellenlänge oder mehreren Wellenlängen aus dem Bereich von etwa 400 nm bis etwa 2200 nm aussendet, und eine Spiegeloptik, welche Spiegel aufweist, die im Winkel von etwa 45° zur Laserstrahlachse angestellt sind, dadurch gekennzeichnet, dass der aus dem Laserkopf (2) austretende Laserstrahl (6) über die Spiegeloptik gegenüber dem Werkstück positionierbar ist, indem die Spiegel (7, 8) entlang der Laserstrahlachse lageveränderlich gehalten sind.

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10-12-2020 дата публикации

Schichtbauelement-Herstellungsverfahren

Номер: DE102009004168B4
Принадлежит: DISCO CORP

Schichtbauelement-Herstellungsverfahren zur Herstellung eines Schichtbauelements unter Verwendung eines verstärkten Wafers (20), bei dem der verstärkte Wafer (20) durch auf einer vorderen Oberfläche (20a) in einem Gittermuster angeordnete Straßen (21) in mehrere Bereiche unterteilt ist und einen mit Bauelementen (22) in den so abgeteilten Bereichen ausgebildeten Bauelementbereich (23) und einen äußeren Umfangsüberschussbereich (24), der den Bauelementbereich (23) umgibt, beinhaltet, ein Bereich einer hinteren Oberfläche (20b), der dem Bauelementbereich (23) entspricht, so geschliffen wird, dass der Bauelementbereich (23) so ausgebildet werden kann, dass er eine vorgegebene Dicke aufweist, und ein Bereich, der dem äußeren Umfangsüberschussbereich (24) entspricht, belassen werden kann, um einen ringförmigen verstärkten Abschnitt (24b) zu bilden, wobei das Verfahren umfasst:einen Waferschichtungsschritt, bei dem ein unten liegender Wafer (200), der einen Durchmesser aufweist, der geringfügig ...

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19-01-2006 дата публикации

Workpiece processing method for use in automobile industry, involves producing recess/ aperture in workpiece by using machine tool, and examining whether recess/aperture is produced in predetermined form by using sensor

Номер: DE102004030716A1
Принадлежит:

The method involves producing a recess or an aperture (6) in a workpiece (5) with the help of a CNC-controlled machine tool. An examination is made to find whether the recess or the aperture is produced in a predetermined form and to find whether a waste part is removed, by using an optical sensor (7) mounted at a tool head. The determination takes place during a movement of the tool away from the workpiece. An independent claim is also included for a device for processing a workpiece.

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04-04-1996 дата публикации

Thermal processing of a workpiece, esp. by means of laser radiation

Номер: DE0004442238C1

The method concerns monitoring of thermal processing of a workpiece (2) by means of a sensor electrode (1) which is positioned relative to the workpiece and is supplied with an alternating current. The time variation of the capacitance formed by the sensor electrode and the workpiece is determined by evaluation of the voltage variation obtained at a fixed sampling rate. The method is characterised by the following steps: (a) the capacitance values obtained are used to determine their frequency distribution; (b) this distribution is compared with a reference distribution; and (c) an error signal is produced on the basis of deviations between the actual and reference distributions. The frequency distribution of measured capacitance is formed over a time interval which is small in comparison with the total duration of thermal processing of the workpiece. A monitoring signal is produced on the basis of a predetermined section of the actual frequency distribution outside the maximum of this ...

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04-11-1982 дата публикации

METHOD AND DEVICE FOR FIXING CHIPS BY ENERGY BEAMS

Номер: DE0002963695D1
Автор: TAN SWIE-IN, TAN, SWIE-IN

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05-10-2017 дата публикации

LASERBEARBEITUNGSVORRICHTUNG MIT VORBEARBEITUNGSSTEUERUNG UND LASERBEARBEITUNGSVERFAHREN

Номер: DE102017106241A1
Принадлежит:

Eine Laserbearbeitungsvorrichtung weist eine Vorbearbeitungssteuerung auf, die einen Befehl ausgibt, um Vorbearbeiten eines Werkstücks unter Hochleistungsbedingungen durchzuführen, die im Vorfeld durch einen Versuch oder eine Berechnung gemäß mindestens einigen Bearbeitungsbedingungen ermittelt werden und die die Bestrahlungsintensität und die Bestrahlungszeit umfassen, bei denen ein Werkstück geschmolzen, formverändert oder denaturiert wird; einen Befehl, um das Werkstück mit einem Laserstrahl unter Niederleistungsbedingungen zu bestrahlen, die im Vorfeld durch einen Versuch oder eine Berechnung gemäß mindestens einigen der Bearbeitungsbedingungen ermittelt werden und die die Bestrahlungsintensität und die Bestrahlungszeit umfassen, bei denen ein Werkstück nicht geschmolzen, formverändert oder denaturiert wird; und einen Befehl, ob die Laserbearbeitung gestartet werden soll, basierend auf einer ersten Lichtmenge von Licht, das von einem Bearbeitungspunkt reflektiert oder emittiert wird ...

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18-06-2020 дата публикации

Laserbearbeitungsrobotersystem und Steuerverfahren für Laserbearbeitungsrobotersystem

Номер: DE102017129258B4
Принадлежит: FANUC CORP, FANUC CORPORATION

Laserbearbeitungsrobotersystem (100), umfassend:eine Laserbestrahlungsvorrichtung (12), die dazu konfiguriert ist, ein Objekt (W) mit einem Laserstrahl (L) zu bestrahlen und einen Bestrahlungspunktverschiebungsvorgang zum Verschieben eines Bestrahlungspunkts mit dem Laserstrahl auf einer Oberfläche des Objekts (W) auszuführen;einen Roboter (11), der dazu konfiguriert ist, die Laserbestrahlungsvorrichtung (12) zu bewegen;eine Laserbestrahlungsvorrichtungssteuerung (14), die dazu konfiguriert ist, den Bestrahlungspunktverschiebungsvorgang der Laserbestrahlungsvorrichtung (12) zu steuern; undeine Robotersteuerung (13), die dazu konfiguriert ist, den Roboter (11) zu steuern,wobei die Robotersteuerung (13) zu Folgendem konfiguriert ist:Bestimmen von mehreren ersten interpolierten Positionen (Pn) durch Interpolieren von mehreren Zielpositionen, die zum Generieren einer Bewegungsbahn der Laserbestrahlungsvorrichtung (12) verwendet werden, basierend auf einer ersten Interpolationsperiode (T1), ...

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07-03-2019 дата публикации

Laserbearbeitung eines transparenten Werkstücks

Номер: DE102017121140A1
Принадлежит:

Die Erfindung betrifft ein Verfahren zur Bearbeitung eines transparenten Werkstücks (4) durch Erzeugung nicht-linearer Absorption von Laserstrahlung in einem im Volumen des Werkstücks (4) befindlichen Laserstrahlfokus. Es ist Aufgabe der Erfindung, ein hinsichtlich Präzision und Qualität verbessertes Verfahren und eine entsprechende Vorrichtung für die Laserbearbeitung von Werkstücken bereit zu stellen. Insbesondere sollen auch Werkstücke aus Verbundmaterialien oder aus sonstigen Spezialmaterialien, wie z.B. Filtergläser, mit verbesserter Qualität bearbeitet werden können. Das erfindungsgemäße Verfahren umfasst hierzu die folgenden Schritte:- spektroskopische Vermessung der linearen Absorption der Laserstrahlung in dem Werkstück (4),- Auswahl einer Arbeitswellenlänge, bei der die lineare Absorption gering ist, und- Bearbeiten des Werkstücks (4) durch Applikation von Laserstrahlung bei der Arbeitswellenlänge. Außerdem betrifft die Erfindung eine entsprechende Vorrichtung zur Bearbeitung ...

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05-03-2020 дата публикации

SiC-SUBSTRATBEARBEITUNGSVERFAHREN

Номер: DE102019212840A1
Принадлежит:

Es wird ein SiC-Substratbearbeitungsverfahren zum Herstellen eines SiC-Substrats aus einem SiC-Ingot offenbart. Das SiC-Substratbearbeitungsverfahren umfasst einen Trennschichtausbildungsschritt mit einem Einstellen eines Brennpunkts eines Laserstrahls, der eine Transmissionswellenlänge für SiC aufweist auf eine von der oberen Fläche des SiC-Ingots aus vorbestimmte Tiefe im Inneren des SiC-Ingots und als Nächstes einem Aufbringen eines Laserstrahls LB auf den SiC-Ingot, um dadurch eine Trennschicht zum Trennen des SiC-Substrats von dem SiC-Ingot auszubilden, einen Substratanbringschritt mit einem Anbringen eines Substrats an der oberen Fläche des SiC-Ingots und einen Trennschritt mit einem Aufbringen einer äußeren Kraft auf die Trennschicht, um dadurch das SiC-Substrat mit dem Substrat von dem SiC-Ingot entlang der Trennschicht zu trennen.

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20-08-2020 дата публикации

Laserbearbeitungssystem zur Bearbeitung eines Werkstücks mittels eines Laserstrahls und Verfahren zum Steuern eines Laserbearbeitungssystems

Номер: DE102019103734A1
Принадлежит:

Ein Laserbearbeitungssystem, insbesondere ein Laserschweißsystem, zur Bearbeitung eines Werkstücks mittels eines Laserstrahls, umfasst: einen Laserbearbeitungskopf zum Einstrahlen des Laserstrahls auf eine Werkstückoberfläche zur Erzeugung einer Dampfkapillare; eine optische Messvorrichtung zur Abstandsmessung mittels eines optischen Messstrahls; eine Bilderfassungseinheit, die eingerichtet ist, ein Bild von einem Bereich der Werkstückoberfläche zu erfassen, der die Dampfkapillare und einen durch Einstrahlen des optischen Messstrahls erzeugten Messfleck umfasst, wobei das Laserbearbeitungssystem eingerichtet ist, basierend auf dem erfassten Bild eine Position des Messflecks und eine Position der Dampfkapillare zu bestimmen. Ein Verfahren zum Bearbeiten eines Werkstücks mittels eines Laserstrahls, umfasst die Schritte: Einstrahlen des Laserstrahls auf eine Werkstückoberfläche zur Erzeugung einer Dampfkapillare; Einstrahlen eines optischen Messstrahls auf die Werkstückoberfläche zum Messen ...

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12-05-1977 дата публикации

VERFAHREN ZUR HERSTELLUNG VON HALBLEITERBAUELEMENTEN MIT HOLOGRAPHISCHER PROJEKTION DER AETZMUSTER UND ANORDNUNG HIERFUER

Номер: DE0001963787B2
Автор:
Принадлежит:

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01-06-2006 дата публикации

Powder coating control method involving powder coating head, coating track, for application of coating to workpiece and focussed laser beam generally useful for powder coating with at least one parameter held constant during coating

Номер: DE102004057799A1
Принадлежит:

Powder coating control involving powder coating head, a coating track for application of the coating to a workpiece (2), focussing a laser beam (3) through the head via a focal point and a convergent powder stream (7) guiding via the powder stream focal point onto the workpiece. An independent claim is included for a device for powder coating control as described above.

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17-07-2008 дата публикации

Shaping machining process for workpieces involves use of laser beam angled to at least one axis in at least five degrees of freedom

Номер: DE102007002437A1
Принадлежит:

The shaping process for a workpiece (1) involves the use of a laser beam (2) angled to at least one axis in at least five degrees of freedom. The machining may take place on several parts of the workpiece at the same time. The surface topography of the workpiece is set in three dimensions, and the position coordinates are used to control the laser machining.

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14-04-2005 дата публикации

Process for quality control in laser welding processes in which the geometry of the weld pool is continuously monitored

Номер: DE0010338062A1
Принадлежит:

The laser welding (15) of two parts takes place with a formed molten pool (11) of metal as the laser moves from left to right along the seam (17). The process is controlled on the position of center of the laser relative to the geometric center of the formed molten pool. The geometric shape is continuously measured using a CCD camera (19) feeding data to control computer (20).

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01-04-2004 дата публикации

Vorrichtung und Verfahren zum Herstellen kundenspezifischer weicher Kontaktlinsen

Номер: DE0010241211A1
Принадлежит:

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung und ein Verfahren zum Herstellen kundenspezifischer weicher Kontaktlinsen, bei dem ein vorgeformter Kontaktlinsen-Rohling entsprechend der Daten einer refraktiven Messung nachbearbeitet wird. Gegenüber herkömmlichen Herstellungsverfahren zeichnet sich das erfindungsgemäße Verfahren dadurch aus, dass die refraktive Messung an einem Auge mit aufsitzender, hydratisierter Kontaktlinse durchgeführt wird, während anschließend die Nachbearbeitung an einem zur Kontaktlinse herstellungsgleichen Kontaktlinsen-Rohling vor dessen Hydratisierung durchgeführt wird.

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05-03-2009 дата публикации

Mehrzweck-Endeffektor für eine Schweißvorrichtung

Номер: DE102008039770A1
Принадлежит:

... umfasst eine Grundplatte, die an einem Roboter befestigt ist und eine Vielzahl von Werkzeugen trägt, die eine Schweißvorrichtung, ein Reinigungsrad zum Reinigen eines Werkstückes und ein Schleifrad zum Schleifen der Schweißnaht umfassen. Die Werkzeuge sind in serieller Reihenfolge auf der Grundplatte angeordnet, beginnend mit dem Reinigungsrad zum Reinigen von Werkstücken, dann folgt die Schweißvorrichtung zum Schweißen der Werkstücke, und dann das Schleifrad zum Schleifen der Schweißnaht.

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09-11-2005 дата публикации

A welding tool

Номер: GB0000519757D0
Автор:
Принадлежит:

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09-10-1991 дата публикации

APPARATUS AND METHOD FOR MONITORING LASER MATERIAL PROCESSING

Номер: GB0009118315D0
Автор:
Принадлежит:

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06-05-1998 дата публикации

Optical transmission and solid state laser devices using graded index optical fibre

Номер: GB0002318882A
Принадлежит:

An optical transmission device 800 has a graded index optical fiber 9 having a core of diameter s , refractive index n 0 at a center of the core, and a difference * capital Greek delta *n between refractive indexes of the center of the core and a peripheral section of the core; an optical fiber incident system 8 and a laser emitting device 10. The focusing lens holder 101 and/or optic fibre holder 102 are movable. Beam splitter 14 and laser beam monitor 15 may control movable device 104.

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26-04-2006 дата публикации

A welding tool with confinement skirt for shielding gas

Номер: GB0002419312A
Принадлежит:

A welding tool 10, in particular for TIG arc welding, plasma welding or laser welding, includes means for feeding an inert gas to the head of the tool, and means for confining the protective gas around the welding head 12, the confinement means comprising a skirt 32 prefabricated out of semirigid refractory material and means for releasably fastening the skirt on the welding head. The skirt 32 is shaped at its front portion to surround the weld bead with clearance over a predetermined length. The skirt 32 is preferably made of composite material based on ceramic fibres and an elastomer that withstands high temperatures, and may also include a metal sheet 46 for providing thermal protection. A camera 43 may be provided for observing the welding zone.

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23-09-1998 дата публикации

Apparatus for delivering laser energy to a remote location

Номер: GB0009816421D0
Автор:
Принадлежит:

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29-01-1986 дата публикации

LASER MACHINING APPARATUS

Номер: GB0002113592B
Принадлежит: PRECI SPARK LTD, * PRECI-SPARK LIMITED

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10-08-1983 дата публикации

Laser machining apparatus

Номер: GB0002113592A
Принадлежит:

A laser machining apparatus (1) for burning holes in a workpiece has an objective lens (20) which is movable by means of motor-driven carriages 28, 30 in a plane generally perpendicular to the lens axis to enable the laser beam to be moved and focussed at different surface locations on the workpiece (14). This enables clusters of holes to be machined in the workpiece surface without the necessity of moving the workpiece except, perhaps, for horizontal movement which is normally a rotational indexing of the workpiece, the laser beam being horizontally directed. Detection of burn- through of the beam is effected by an optoelectronic detector circuit which monitors the light intensity transmitted from the workpiece surface during burning of a hole by the laser, the light being transmitted back along the laser beam path through a mirror and filter system (18, 38, 44) to the detector circuit. Once burn-through is effected the fall in light intensity is detected by the circuit which triggers ...

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21-11-1979 дата публикации

Ophthalmic light coagulator

Номер: GB0002020846A
Автор: Wengler, Peter
Принадлежит:

A light coagulator instrument of the ophthalmoscopic type comprising an ophthalmoscope lens (2) an observing optical system (18), a source (8) of coagulation light and a source of illumination light, the instrument including means (3) operable to enable coagulation light generated by the source (8) to be moved in any direction relative to a stationary point of observation. in one embodiment the means comprises a mirror (3) movable about two mutually perpendicular axes. Alternatively, the coagulant light source may itself be movable. ...

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18-12-2019 дата публикации

Laser engraver mirror adjustment system

Номер: GB0201915801D0
Автор:
Принадлежит:

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20-09-2017 дата публикации

Method for laser machining inside materials

Номер: GB0201712639D0
Автор:
Принадлежит:

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17-08-2016 дата публикации

Laser cutters and laser cutting systems

Номер: GB0201611408D0
Автор:
Принадлежит:

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31-08-2015 дата публикации

Method and system for packaging respiring produce

Номер: AP2015008660A0
Принадлежит:

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31-08-2015 дата публикации

Method and system for packaging respiring produce

Номер: AP0201508660D0
Принадлежит:

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31-08-2015 дата публикации

Method and system for packaging respiring produce

Номер: AP0201508660A0
Принадлежит:

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15-07-2008 дата публикации

TEST SPECIMEN GENERATOR WITH IMPROVED DISSOLUTION OF ADDRESS

Номер: AT0000398299T
Принадлежит:

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15-04-2008 дата публикации

PROCEDURE FOR THE QUALITY CONTROL OF A MANUFACTURER OF LASER PROCESS

Номер: AT0000390238T
Принадлежит:

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15-02-2007 дата публикации

LASER DRILLING SYSTEM AND - PROCEDURES

Номер: AT0000352394T
Принадлежит:

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15-07-1978 дата публикации

OPHTHALMOLOGISCHE LASERANLAGE

Номер: ATA1111672A
Автор:
Принадлежит:

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15-03-2007 дата публикации

LASERBEARBEITUNGSGERÄT ZUR PLASMAINDUZIERTEN ABLATION

Номер: AT0000502425A1
Автор:
Принадлежит:

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15-04-2009 дата публикации

PROCEDURE AND DEVICE FOR THE EVALUATION OF MARKING RESULTS

Номер: AT0000425836T
Принадлежит:

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15-05-2010 дата публикации

DYNAMICALLY BALANCED MICRO-ELECTROMECHANICAL DEVICES

Номер: AT0000466288T
Принадлежит:

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15-12-2010 дата публикации

PROCEDURE FOR THE PROCESSING OF ORGANIC CRYSTALS

Номер: AT0000490838T
Принадлежит:

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15-04-2019 дата публикации

WAFER PROCESSING METHOD

Номер: AT0000518580A3
Автор:
Принадлежит:

Offenbart ist ein Wafer-Bearbeitungsverfahren zum Entfernen eines ringförmigen Verstärkungsbereichs, wobei der ringförmige Verstärkungsbereich um einen Wafer-Bauteilbereich ausgebildet ist. Das Verfahren umfasst das Stützen des Wafers durch ein Klebeband an einem ringförmigen Rahmen, das Bilden einer Kennzeichnung, die einer Kerbe entspricht, an einer Position radial innerhalb eines Grenzbereichs zwischen dem Verstärkungsbereich und dem Bauteilbereich, das Schneiden des Grenzbereichs gemeinsam mit dem Klebeband auf, um dadurch den Verstärkungsbereich vom Bauteilbereich zu entfernen, und das Bewegen des ringförmigen Verstärkungsbereichs, der durch das Klebeband am ringförmigen Rahmen gestützt wird, von einem Haltetisch weg, um dadurch den ringförmigen Verstärkungsbereich vom Wafer zu entfernen.

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15-12-2011 дата публикации

REPAIR OF THE STATIONARY POETRY OF A ROTOR

Номер: AT0000535339T
Принадлежит:

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15-02-1994 дата публикации

PROCEDURE FOR SOLDERING AND DEVICE FOR THE EXECUTION OF THIS PROCEDURE

Номер: AT0000136392A
Принадлежит:

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15-07-2011 дата публикации

PROCEDURE FOR THE PRODUCTION OF A SCHNEIDODER EMBOSSING ROLL OF MEANS LASER DEPOSIT WELDING

Номер: AT0000512750T
Принадлежит:

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15-06-1983 дата публикации

SAFETY DEVICE FOR A MEDICAL TREATMENT SYSTEM.

Номер: AT0000003503T
Автор: HATTORI, SHINICHIRO
Принадлежит:

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15-05-1999 дата публикации

PROCEDURE AND DEVICE FOR WORKING ON ARBITRARY ONE 3D-FORMFLÄCHEN of MEANS LASER

Номер: AT0000179107T
Принадлежит:

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15-03-1997 дата публикации

PROCEDURE FOR SOLDERING AND DEVICE FOR THE EXECUTION OF THIS PROCEDURE

Номер: AT0000149898T
Принадлежит:

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15-04-2006 дата публикации

LASER WORKING ON EQUIPMENT WITH OBSERVATION MECHANISM

Номер: AT0000321623T
Принадлежит:

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15-09-2006 дата публикации

LASER WELDING METHOD AND - DEVICE

Номер: AT0000338604T
Принадлежит:

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15-11-2001 дата публикации

AIRBAG COVER

Номер: AT0000207022T
Принадлежит:

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10-04-1968 дата публикации

Procedure, device and equipment for the thermal material processing by means of laser beams

Номер: AT0000261076B
Автор:
Принадлежит:

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07-08-2000 дата публикации

PROCEDURE FOR THE QUALITY CONTROL OF A MANUFACTURER OF LASER PROCESS

Номер: AT00036607581T
Принадлежит:

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25-12-2000 дата публикации

PROCEDURE FOR THE QUALITY CONTROL OF A MANUFACTURER OF LASER PROCESS

Номер: AT00037448186T
Принадлежит:

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10-09-2000 дата публикации

LASER DRILLING SYSTEM AND - PROCEDURES

Номер: AT00034836020T
Принадлежит:

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08-07-2000 дата публикации

LASER DRILLING SYSTEM AND - PROCEDURES

Номер: AT00035081028T
Принадлежит:

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09-04-2000 дата публикации

LASER DRILLING SYSTEM AND - PROCEDURES

Номер: AT00030926966T
Принадлежит:

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16-02-2000 дата публикации

LASER DRILLING SYSTEM AND - PROCEDURES

Номер: AT00038484880T
Принадлежит:

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22-03-2012 дата публикации

Defect correcting apparatus and defect correcting method

Номер: US20120071056A1
Принадлежит: Sony Corp

The present disclosure provides a defect correcting apparatus including a defect detecting device configured to detect a defect within a repetitive pattern in a multilayer substrate a defect correcting device configured to correct the defect in the multilayer substrate by a specified defect correcting method, and a control device configured to, when the defect detected by the defect detecting device is detected overlapping a region in which occurrence of an interlayer short-circuit defect is assumed, generate an object corresponding to the defect correcting method for the interlayer short-circuit defect, and controlling the defect correcting device for correcting the defect using the generated object.

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12-04-2012 дата публикации

Method of detecting pattern formed on non-exposed surface of workpiece

Номер: US20120086797A1
Автор: Kenji Furuta
Принадлежит: Disco Corp

A method of detecting an object of detection formed in the inside of or on a non-exposed surface of a workpiece having a rugged exposed surface, the detection being made on the exposed surface side of the workpiece by use of an imaging unit. The detecting method includes: a flattening step of coating the exposed surface of the workpiece with a liquid resin transmissive to the wavelength of light to be detected by the imaging unit so as to flatten the exposed surface of the workpiece; and a detecting step of detecting the object of detection formed in the inside of or on the non-exposed surface of the workpiece by use of the imaging unit on the exposed surface side of the workpiece coated with the liquid resin, after the flattening step.

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16-08-2012 дата публикации

Scanned laser light source

Номер: US20120205347A1
Принадлежит: Applied Materials Inc

The thermal processing device includes a stage, a continuous wave electromagnetic radiation source, a series of lenses, a translation mechanism, a detection module, a three-dimensional auto-focus, and a computer system. The stage is configured to receive a substrate thereon. The continuous wave electromagnetic radiation source is disposed adjacent the stage, and is configured to emit continuous wave electromagnetic radiation along a path towards the substrate. The series of lenses is disposed between the continuous wave electromagnetic radiation source and the stage, and are configured to condense the continuous wave electromagnetic radiation into a line of continuous wave electromagnetic radiation on a surface of the substrate. The translation mechanism is configured to translate the stage and the line of continuous wave electromagnetic radiation relative to one another. The detection module is positioned within the path, and is configured to detect continuous wave electromagnetic radiation.

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01-11-2012 дата публикации

Laser match honing system and method

Номер: US20120273471A1
Принадлежит: ROBERT BOSCH GMBH

A laser match honing system and method are provided for processing one of a pair of mechanically matching components ( 1, 2 ) having matching portions ( 12, 22, 16, 26 ) that will be fitted with each other. A dimension of the matching portion ( 12, 16 ) of the first component ( 1 ) is measured and is then used for calculating the desired dimension of the corresponding matching portion ( 22, 26 ) of the second component ( 2 ). An actual dimension of the matching portion ( 22, 26 ) of the second component ( 2 ) is also measured. Then, the matching portion ( 22, 26 ) of the second component ( 2 ) is honed by laser beam in the condition that the actual dimension is not equal to the desired dimension.

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29-11-2012 дата публикации

Apparatus and method for repair of defects in an electronic energy control or display device

Номер: US20120302122A1
Принадлежит: Sage Electrochromics Inc

An apparatus for repair of a defect in an electronic energy control device may include a position indicating means for indicating a position at which to fixedly position a mounting unit relative to a portion of an electronic energy control device including a defect to be repaired, where the device is fixed in position. An imaging and repair assembly of the apparatus has an optical imaging range and a laser repair range. When the mounting unit is mounted to a support surface to fixedly position the mounting unit at the position indicated by the position indicating means and the imaging and repair assembly is attached to the mounting unit, the portion of the electronic energy control device is within the imaging range and the repair range.

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20-12-2012 дата публикации

Optical measuring device for monitoring a joint seam, joining head and laser welding head with same

Номер: US20120318775A1
Автор: Joachim Schwarz
Принадлежит: Precitec KG

An optical measuring device for monitoring a joint seam, joining head and laser welding head. The optical measuring device monitors a joining region in a workpiece and has at least one light-section device with a first light source for casting a light fan in the direction of the workpiece to be joined, making a triangulation light line within the joining region which intersects a joint seam. An illumination device with a second light source homogeneously illuminates the joining region. A first optical sensor with a first observation beam path for spatially resolved imaging of the triangulation light line is projected onto the joint seam. A second optical sensor with a second observation beam path for spatially resolved imaging of the joint seam is coaxially coupled with the first observation beam path. The readout rate of the first and second optical sensors is >1 kHz and <500 Hz, respectively.

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17-01-2013 дата публикации

Laser processing machine

Номер: US20130015166A1
Автор: Chun-Hao Li
Принадлежит: Individual

A laser processing machine includes a cavity, a laser system, at least one processing platform, and at least one upper motion platform. The laser system is disposed at a lower part inside the cavity, and used for outputting a laser beam. A traveling direction of the laser beam is opposite to the gravity direction. The processing platform is disposed at an upper part inside the cavity, and includes an adsorption surface and a connection surface facing each other. The adsorption surface is located below the connection surface, and is used for adsorbing a workpiece. The upper motion platform is disposed at the upper part inside the cavity, and is correspondingly connected to the connection surface of the processing platform, in order to cause the processing platform to move.

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14-02-2013 дата публикации

System and method for component material addition

Номер: US20130040074A1
Принадлежит: Individual

A system is disclosed for depositing material on a component. The system includes a deposition device operatively coupled to a fiber optic Nd:YAG laser. The deposition device includes a focusing prism that focuses the Nd:YAG laser at a focal area on a bladed disk, where the focal area on the bladed disk is between two blades of the disk. The system further includes an imaging means that views the focal area of the component. The imaging means and the fiber optic Nd:YAG laser each are positioned in a substantially similar optical relationship to the focal area on the bladed disk. The system further includes an additive material delivery means that delivers additive material to the component at the focal area on the component.

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14-03-2013 дата публикации

Method of Verifying Seam Quality during a Laser Welding Process

Номер: US20130062324A1
Принадлежит: Trumpf Werkzeugmaschinen SE and Co KG

This disclosure relates to verifying a seam quality during a laser welding process. In certain aspects, a method includes detecting, in a spatially resolved manner, a first amount of radiation emerging from a workpiece in a first wavelength range, determining a first geometric parameter of a seam characteristic based on the first amount of radiation detected in the first wavelength range, detecting, in a spatially resolved manner, a second amount of radiation emerging from the workpiece in a second wavelength range, the second wavelength range being different than the first wavelength range, determining a second geometric parameter of the seam characteristic based on the second amount of radiation detected in the second wavelength range, comparing the first and second geometric parameters to respective reference values or to respective tolerance intervals to provide respective comparison results, and logically combining the respective comparison results to verify the seam quality.

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11-07-2013 дата публикации

Method for closed-loop controlling a laser processing operation and laser material processing head using the same

Номер: US20130178952A1
Принадлежит: Precitec Itm Gmbh, Precitec KG

The present invention relates to a method for closed-loop controlling a processing operation of a workpiece, comprising the steps of: (a) recording a pixel image at an initial time point of an interaction zone by means of a camera, wherein the workpiece is processed using an actuator having an initial actuator value; (b) converting the pixel image into a pixel vector; (c) representing the pixel vector by a sum of predetermined pixel mappings each multiplied by a corresponding feature value; (d) classifying the set of feature values on the basis of learned feature values into at least two classes of a group of classes comprising a first class of a too high actuator value, a second class of a sufficient actuator value and a third class of a too low actuator value at the initial time point; (e) performing a control step for adapting the actuator value by minimizing the error e t between a quality indicator y e and a desired value; and (f) repeating the steps (a) to (e) for further time points to perform a closed-loop controlled processing operation.

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08-08-2013 дата публикации

Method for monitoring the quality of industrial processes and system therefrom

Номер: US20130199296A1
Принадлежит: Centro Ricerche Fiat SCpA

A method for monitoring the quality of an industrial working process, which includes identifying defects of the working process, comprises acquiring at least one signal having multiple frequency components from the industrial working process, decomposing the at least one signal having multiple frequency components in signals having single frequency components, calculating the information content for each signal having a single frequency component, analyzing the information content for each signal having a single frequency component, and if the value of the information content of the signal at the lowest single frequency component does not represent a main percentage of the information content of the whole acquired signal, the acquired signal having multiple frequency components is evaluated as indicative of a working process with defects and a defect analysis step is performed on the signal having multiple frequency components.

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29-08-2013 дата публикации

Apparatus and method for repair of defects in an electronic energy control or display device

Номер: US20130225027A1
Принадлежит: Sage Electrochromics Inc

An apparatus for repair of a defect in an electronic energy control device may include a position indicating means for indicating a position at which to fixedly position a mounting unit relative to a portion of an electronic energy control device including a defect to be repaired, where the device is fixed in position. An imaging and repair assembly of the apparatus has an optical imaging range and a laser repair range. When the mounting unit is mounted to a support surface to fixedly position the mounting unit at the position indicated by the position indicating means and the imaging and repair assembly is attached to the mounting unit, the portion of the electronic energy control device is within the imaging range and the repair range.

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14-11-2013 дата публикации

ACOUSTO-OPTIC DEFLECTOR APPLICATIONS IN LASER PROCESSING OF DIELECTRIC OR OTHER MATERIALS

Номер: US20130299468A1
Принадлежит:

A laser processing system for micromachining a workpiece includes a laser source to generate laser pulses for processing a feature in a workpiece, a galvanometer-driven (galvo) subsystem to impart a first relative movement of a laser beam spot position along a processing trajectory with respect to the surface of the workpiece, and an acousto-optic deflector (AOD) subsystem to effectively widen a laser beam spot along a direction perpendicular to the processing trajectory. The AOD subsystem may include a combination of AODs and electro-optic deflectors. The AOD subsystem may vary an intensity profile of laser pulses as a function of deflection position along a dither direction to selectively shape the feature in the dither direction. The shaping may be used to intersect features on the workpiece. The AOD subsystem may also provide rastering, galvo error position correction, power modulation, and/or through-the-lens viewing of and alignment to the workpiece. 1. A method for dithering a laser beam to process features in a workpiece , the method comprising:imparting, using a first positioning system, first relative movement of a laser beam spot position along a processing trajectory;imparting, using a second positioning system, second relative movement of the laser beam spot position along a dither direction relative to the processing trajectory, wherein the second relative movement is superimposed on the first relative movement, and wherein the second relative movement is at a substantially higher velocity than that of the first relative movement;amplitude modulating, using the second positioning system, a laser beam based on a specific feature characteristic at one or more corresponding target locations on the workpiece; andemitting the laser beam to the workpiece during the second relative movement to effectively widen a laser beam spot at the workpiece in the dither direction.2. The method of claim 1 , further comprising:controlling one or more acousto-optic ...

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09-01-2014 дата публикации

HYBRID ULTRAPRECISION MACHINING DEVICE AND HYBRID ULTRAPRECISION MACHINING METHOD

Номер: US20140008340A1
Принадлежит: Panasonic Corporation

There is provided a hybrid ultraprecision machining device for manufacturing a micro-machined product from a workpiece, the machining device comprising: an electromagnetic-wave-machining means for roughly machining the workpiece; a precision-machining means for precisely machining the roughly machined workpiece, the precision-machining means being equipped with a replaceable cutting tool selected from the group consisting of a planar tool, a shaper tool, a fly-cutting tool, a diamond-turning tool and a micro-milling tool; a shape-measurement means for measuring a shape of the workpiece upon use of the electromagnetic-wave machining means and the precision-machining means; and a control means for controlling the electromagnetic-wave-machining means or the precision-machining means, based on information on the shape of the workpiece, the shape being measured by the shape-measuring means. 1. A hybrid ultraprecision machining device for manufacturing a micro-machined product from a workpiece , the machining device comprising:an electromagnetic-wave-machining means for roughly machining the workpiece;a precision-machining means for precisely machining the roughly machined workpiece, the precision-machining means being equipped with a replaceable cutting tool selected from the group consisting of a planar tool, a shaper tool, a fly-cut tool, a diamond-turning tool and a micro-milling tool;a shape-measurement means for measuring a shape of the workpiece upon use of the electromagnetic-wave machining means and the precision-machining means; anda control means for controlling the electromagnetic-wave-machining means or the precision-machining means, based on information on the shape of the workpiece, the shape being measured by the shape-measuring means.2. The hybrid ultraprecision machining device according to claim 1 , wherein a micro part of the micro-machined product has a dimension of 10 nm to 15 mm.3. The hybrid ultraprecision machining device according to claim 1 , ...

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27-02-2014 дата публикации

Method and device for producing electrode windings

Номер: US20140053383A1

A method produces electrode windings, in which method a strip- or ribbon-like anode and a strip- or ribbon-like cathode are provided and flat collector lugs are formed on at least one longitudinal side of the anode and of the cathode at varying distances and/or contours are cut into the longitudinal sides of the electrodes. The anode and the cathode are wound up together with a strip- or ribbon-like separator to form a winding with the sequence anode/separator/cathode. The method is distinguished, in particular, in that the process of forming collector lugs and/or of cutting contours and the process of winding up overlap with respect to time.

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13-03-2014 дата публикации

COLOR SENSING FOR LASER DECOATING

Номер: US20140069897A1
Принадлежит: GENERAL LASERTRONICS CORPORATION

A coating removal apparatus utilizing a common optics path to provide laser pulses to a coated surface and to direct a light illumination reflected from the coated surface to a photosensitive detector and analyzer. The apparatus is an integrated device including a laser source, a beam splitter, scanning optics, a waste removal apparatus, one or more light illuminators, a photosensitive detector, a comparator, and a control logic circuit. Alternatively, the laser source is external to the integrated device and a fiber optic cable is used to connect the laser source to the integrated device. 1. A laser-based coating removal system to remove a coating from a surface , the system comprising:a. a laser source to provide a laser pulse;b. scanning optics to direct the laser pulse along a laser path to a first position on the surface, whereby the laser pulse impinges the first position on the surface thereby ablating a portion of the coating from the first position;c. one or more light illuminators to provide a light illumination, each light illumination along a light illumination path, the light illumination impinging the first position on the surface;d. a photosensitive detector to receive light reflected from the surface as a result of the impinging light illumination and to measure the reflected light; ande. a color sensing path to direct the reflected light from the surface to the photosensitive detector, wherein the color sensing path includes the scanning optics, wherein all of the color sensing path is independent of all of the light illumination path.2. The system of further comprising a control logic circuit coupled to the laser source claim 1 , the scanning optics claim 1 , and to the photosensitive detector claim 1 , wherein the control logic circuit provides control signals to the laser source and the scanning optics.3. The system of further comprising a comparator coupled to the photosensitive detector to compare the measured reflected light with predetermined ...

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20-03-2014 дата публикации

BOROSCOPE AND A METHOD OF LASER PROCESSING A COMPONENT WITHIN AN ASSEMBLED APPARATUS USING A BOROSCOPE

Номер: US20140076864A1
Принадлежит: ROLLS-ROYCE PLC

A boroscope includes a working head having first and second ends. A first optical fibre extends through the boroscope to a position between the first and second ends. A second optical fibre extends through the boroscope to the second end of the working head. A laser optical fibre extends through the boroscope. At least one lens is arranged between the first end and the second end of the working head and a mirror is gimballed to the second end of the working head. The laser optical fibre directs laser light transmitted through the laser optical fibre onto the lens and then onto the mirror. A first LED is arranged at a position between the first end and the second end of the working head and a second LED is arranged at the second end of the working head and an actuator devices adjust the position of the mirror. 1. A boroscope comprising a working head , the working head having a first end and a second end , a first optical fibre extending through the boroscope to a position between the first end and the second end of the working head , a second optical fibre extending through the boroscope to the second end of the working head , a laser optical fibre extending through the boroscope , a mirror adjustably mounted on the working head , the laser optical fibre being arranged to direct laser light transmitted through the laser optical fibre onto the mirror on the working head , a first light source arranged at a position between the first end and the second end of the working head , a second light source arranged at the second end of the working head , and an actuator device to adjust the position of the mirror.2. A horoscope as claimed in wherein at least one lens being arranged between the first end and the second end of the working head claim 1 , the laser optical fibre being arranged to direct laser light transmitted through the laser optical fibre onto the at least one lens within the working head and then onto the mirror on the working head.3. A boroscope as claimed ...

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01-01-2015 дата публикации

APPARATUS AND METHOD FOR MONITORING LASER WELDING BEAD

Номер: US20150001196A1

An apparatus for monitoring a laser welding bead irradiates a laser to a surface of a welding bead when welding with a laser welding machine, collects a signal reflected from the surface of the welding bead as an image signal, and then extracts at least one feature variable of a bead shape using the collected image signal. Then, the apparatus for monitoring the laser welding bead determines welding defects using the at least one feature variable, and controls an operation of the laser welding machine according to whether or not the welding defects are generated. 1. An apparatus for monitoring a welding bead generated by welding of a laser welding machine , the apparatus comprising:a vision sensor part irradiating a laser to a surface of the welding bead and collecting a signal reflected from the surface of the welding bead as an image signal; anda terminal part measuring a bead shape from the collected image signal, extracting at least one feature variable from the bead shape, determining welding defects using the at least one feature variable, and classifying defective forms at the time of determining the welding defects.2. The apparatus of claim 1 , wherein claim 1 ,when the terminal part determines normal welding, the terminal part instructs the laser welding machine to perform welding at a next position.3. The apparatus of claim 1 , wherein claim 1 ,when the terminal part determines the welding defects, the terminal part instructs the laser welding machine to perform welding at a next position or stop the welding according to a selection of a user.4. The apparatus of claim 1 , whereinthe vision sensor part includes:a laser scan camera including a charge-coupled device (CCD) sensor converting the signal reflected from the surface of the welding bead into an image signal; anda telecentric lens passing only a signal parallel to an optical axis among the signals reflected from the surface of the welding bead to the laser scan camera.5. The apparatus of claim 1 , ...

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02-01-2020 дата публикации

HANDHELD PULSED LASER DEVICE FOR CLEANING OR TREATING A SURFACE

Номер: US20200001393A1
Принадлежит:

The present invention relates to a handheld pulsed laser device for cleaning or treating a surface, comprising a laser source, a focal distance adjuster and a beam deflector. The laser source is configured to emit a pulsed laser beam and the focal distance adjuster, is configured to change a focal distance of the beam. The beam deflector may comprise at least one movable mirror onto which the beam is deflected, wherein the deflector is configured to deflect the beam to scan the beam along the surface. 1. A handheld pulsed laser device for cleaning or treating a surface , comprising:a laser source, configured to emit a pulsed laser beam;a focal distance adjuster, configured to change a focal distance of the beam, and;a beam deflector, configured to deflect the beam to scan the beam along the surface;at least one sensor, configured to provide a sensor signal, representative for of a parameter that is related to a characteristic of the surface; anda control unit, configured to control the beam deflector to scan the beam along the surface in an, at least, two-dimensional pattern, based on the sensor signal.2. The pulsed laser device according to claim 1 , wherein the pattern of the beam comprises an outer contour and wherein the outer contour is filled-up by the beam with a back-and-forth scanning movement within the outer contour.3. The pulsed laser device according to claim 2 , wherein the back-and-forth scanning movement is superpositioned with a sinusoidal pattern.4. The pulsed laser device according to claim 2 , wherein the back-and-forth scanning movement is superpositioned with a spiral pattern.5. The pulsed laser device according to claim 1 , wherein the beam deflector comprises at least one mirror claim 1 , which is tiltable around at least one perpendicular axis.6. The pulsed laser device according to claim 1 , wherein the focal distance adjuster comprises a movable lens element and a piezo-element claim 1 , which is configured move the movable lens element to ...

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02-01-2020 дата публикации

CALIBRATION TEST PIECE FOR GALVANOMETRIC LASER CALIBRATION

Номер: US20200001396A1
Принадлежит: nLIGHT, Inc.

Some embodiments may include a galvanometric laser system, comprising: a laser device to generate a laser beam; an X-Y scan head module to position the laser beam on a work piece, the X-Y scan head module including a laser ingress to receive the laser beam and a laser egress to output the laser beam; a support platen located below the laser egress; an in-machine imaging system integrated with the galvanometric laser, wherein a camera of the in-machine imaging system is arranged to view a surface of an object located on the support platen using one or more optical components of the X-Y scan head module to generate assessment data associated with a calibration of the X-Y scan head module by imaging the surface of the object, wherein a calibration fiducial is located on the surface of the object. 1. A galvanometric laser system , comprising:a laser device to generate a laser beam;an X-Y scan head module to position the laser beam on a work piece, the X-Y scan head module including a laser ingress to receive the laser beam and a laser egress to output the laser beam;a support platen located below the laser egress and arranged to receive a work piece;an in-machine imaging system integrated with the galvanometric laser, wherein a camera of the in-machine imaging system is arranged to use one or more optical components of the X-Y scan head module to view an object located on the support platen; anda calibration test piece to place on the support platen during a calibration routine prior to positioning the laser beam on the work piece, the calibration test piece with a planar surface including a calibration fiducial usable by the camera to generate calibration data associated with a calibration of the X-Y scan head module.2. The galvanometric laser system of claim 1 , further comprising a selective optic located between the laser ingress and the laser device claim 1 , the selective optic being optically transmissive to the laser beam and optically non-transmissive to light ...

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04-01-2018 дата публикации

Device for checking a weld bead

Номер: US20180001419A1
Автор: Raffaele VALENTE
Принадлежит: European Welding Group sprl

Devices and methods comprise at least one gauge for inspecting weld seams comprising a plurality of cutouts: a square cutout, a rectangular cutout, a concave cutout with a protuberance; and a straight edge ending with a protruding part. The devices and methods make it possible to inspect the compliance of a weld bead with various quality standards, without taking measurements, or referring to said standards.

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04-01-2018 дата публикации

WAFER ALIGNMENT WITH RESTRICTED VISUAL ACCESS

Номер: US20180001420A1
Автор: Pass Thomas
Принадлежит:

Wafer alignment with restricted visual access has been disclosed. In an example, a method of processing a substrate for fabricating a solar cell involves supporting the substrate over a stage. The method involves forming a substantially opaque layer over the substrate. The substantially opaque layer at least partially covers edges of the substrate. The method involves performing fit-up of the substantially opaque layer to the substrate. The method involves illuminating the covered edges of the substrate with light transmitted through the stage, and capturing a first image of the covered edges of the substrate based on the light transmitted through the stage. The method further includes determining a first position of the substrate relative to the stage based on the first image of the covered edges. The substrate may be further processed based on the determined first position of the substrate under the substantially opaque layer. 1. A system for processing a substrate for fabrication of a solar cell , the system comprising:a stage configured to support the substrate;a layer formation station configured to form a substantially opaque layer over the substrate and to fit-up the substantially opaque layer to the substrate, wherein the substantially opaque layer at least partially covers edges of the substrate;a light source configured to illuminate the at least partially covered edges of the substrate through the stage;an image sensor configured to capture a first image of the at least partially covered edges of the substrate based on the light transmitted through the stage;a computing device configured to determine a first position of the substrate relative to the stage based on the first image of the covered edges; anda processing station configured to process the substrate based on the determined first position of the substrate under the substantially opaque layer.2. The system of claim 1 , wherein: place a metal sheet over the substrate, and', 'apply pressure to the ...

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05-01-2017 дата публикации

A SELF-MONITORING ADDITIVE MANUFACTURING SYSTEM AND METHOD OF OPERATION

Номер: US20170001379A1
Автор: Long Yu
Принадлежит:

A self-monitoring additive manufacturing system and method of operation utilizes a surface imaging monitor to image a surface of a slice of a workpiece for storage and processing of the image to detect surface anomalies. The monitoring may operate in real time and in unison with an energy gun of the system for correction of the anomalies in real-time by re-melting of the anomaly. 1. An additive manufacturing system comprising:a layer of raw material;an energy gun for melting at least a portion of the layer and thereby forming at least in part a slice of a workpiece; anda surface monitor for detecting surface anomalies of the portion after solidification.2. The additive manufacturing system set forth in wherein the surface monitor is a volumetric imaging monitor.3. The additive manufacturing system set forth in wherein the raw material is a powder.4. The additive manufacturing system set forth in further comprising:an electric controller constructed an arranged to control the energy gun dictated at least in part by output signals received from the surface monitor.5. The additive manufacturing system set forth in wherein the surface monitor is a profilometer.6. The additive manufacturing system set forth in wherein the surface monitor is an interferometer.7. The additive manufacturing system set forth in wherein the energy gun is a laser gun.8. The additive manufacturing system set forth in wherein the energy gun is an electron beam gun.9. The additive manufacturing system set forth in wherein the anomalies include at least one of balling claim 1 , warping claim 1 , porosity claim 1 , cracking claim 1 , and delamination.10. A method of operating an additive manufacturing system comprising the steps of:forming at least a portion of a slice of a workpiece;taking an image of a surface of at least the portion of the slice with a surface monitor; andidentifying an anomaly of the surface through the image.11. The method set forth in wherein the surface monitor is a ...

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03-01-2019 дата публикации

LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD

Номер: US20190001433A1
Автор: Yamamoto Setsuo
Принадлежит:

A laser processing apparatus includes: a chuck table for holding a single-crystal SiC ingot on a holding surface thereof; a laser beam applying unit for applying a laser beam to the single-crystal SiC ingot held on the holding surface of the chuck table; and a camera unit configured to capture an image of the single-crystal SiC ingot held on the holding surface of the chuck table. The chuck table includes a porous material making up the holding surface and a glass frame made of a non-porous material and having a recess defined therein and receiving the porous material fitted therein, and a negative pressure transfer path for transferring a negative pressure to the porous material fitted in the recess. 1. A laser processing apparatus comprising:a chuck table for holding a workpiece on a holding surface thereof;a laser beam applying unit configured to apply a laser beam to the workpiece held on the holding surface of said chuck table; anda camera unit configured to capture an image of the workpiece held on the holding surface of said chuck table;wherein said chuck table includes:a porous material making up said holding surface; anda glass frame made of a non-porous material and having a recess defined therein for receiving said porous material fitted therein, and a negative pressure transfer path for transferring a negative pressure to the porous material fitted in said recess.2. The laser processing apparatus according to claim 1 , wherein said porous material is provided as a porous glass plate.3. The laser processing apparatus according to claim 2 , further comprising:a table base movable with respect to said laser beam applying unit, said glass frame being mounted on said table base.4. The laser processing apparatus according to claim 2 , wherein said laser beam applying unit includes a laser oscillator for oscillating said laser beam and a condensing lens for focusing the laser beam oscillated by said laser oscillator claim 2 , said condensing lens being disposed ...

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03-01-2019 дата публикации

LOCATION OF IMAGE PLANE IN A LASER PROCESSING SYSTEM

Номер: US20190001434A1
Принадлежит:

Disclosed is a method and an apparatus to process a workpiece including producing a first beam of laser energy characterized by a first spatial intensity distribution. A first workpiece is processed using the first beam of laser energy to form a plurality of features at a first distance between the scan lens and the first workpiece and forming a second features at a second distance. The method includes determining which of the plurality of features has a shape that most closely resembles the shape of the first spatial intensity distribution and setting a process distance as the distance that produced that feature. Using this process distance, a surface of a second workpiece is processed using second beam of laser energy with a second spatial intensity distribution. 1. A method of processing a workpiece using a laser processing system having a scan lens , the method , comprising:producing a first beam of laser energy characterized by a first spatial intensity distribution having a non-circular perimeter shape at the focal point of the beam when viewed in a plane that is orthogonal to a path along which the beam of laser energy propagates;processing a first workpiece using the first beam of laser energy;the processing comprising forming a plurality of features in the first workpiece, wherein a first distance between the scan lens and the first workpiece during the forming of one of the plurality of features is different from a second distance between the scan lens and the first workpiece during the forming of at least one other of the plurality of features;determining which of the plurality of features has a shape that most closely resembles the shape of the first spatial intensity distribution;setting a process distance as the distance between the scan lens and the first workpiece during the forming of the feature having the shape that most closely resembles the shape of the first spatial intensity distribution;determining an imaging plane as a plane at the process ...

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03-01-2019 дата публикации

A COATING ABLATING APPARATUS WITH COATING REMOVAL DETECTION

Номер: US20190001435A1
Принадлежит:

A laser-based coating removal apparatus to remove a coating from a surface without damaging the surface. The apparatus comprises a laser source to provide a laser light, a routing element coupled to the laser source and configured to direct the laser light onto a target region of the surface thereby removing the coating from the target region, and a detection element to detect the coating as the coating separates from the target region of the surface. The detection element is able to prevent the surface from being damaged by limiting or eliminating the laser light directed onto the target region after all the coating has been removed. The detection element is able to detect the separation of the coating from the target region by detecting incandescence, acoustic signature, motion, fluorescence and/or chemical properties produced by the separation of the coating from the surface. 1. A laser-based coating removal apparatus to remove a coating from a surface , the apparatus comprising:a. a laser source to provide a laser light for removing the coating from a target region of the surface;b. a routing element coupled to the laser source and configured to direct the laser light onto a target region of the surface;c. a detection element to detect the coating as the coating separates from the target region of the surface by inputting a signal received from the surface at the target region; andd. a controller configured to adjust a current firing rate of the laser light based on the signal received from the surface at the target region, wherein if the detection element detects that the coating has separated from the surface in the target region for a period, the controller coupled to the detection element decreases an amount of energy per second directed onto the target region by the laser light from a non-zero preselected high value to a non-zero preselected low value and further wherein the controller is able to adjust a length of the period based on one or more ...

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03-01-2019 дата публикации

HEATING SYSTEM FOR COMPOSITE REWORK OF AIRCRAFT

Номер: US20190001594A1
Принадлежит:

A method and apparatus comprising a laser unit and a controller. The laser unit is configured to generate a number of laser beams. The controller is configured to operate the laser unit to generate the number of laser beams resulting in a desired level of heating of a composite patch that cures the composite patch on a composite structure. 115-. (canceled)16. A method for curing a composite patch on a composite structure , the method comprising:attaching a rework system to a location on the composite structure comprising the composite patch;receiving, in a controller configured to operate a laser unit, rework information for generating commands for selecting and transmitting, from the laser unit, a wavelength and intensity required to pass through a vacuum bag with a vacuum applied to the vacuum bag and cause a desired level of heating of the composite patch, within the vacuum bag, for each step needed to cure the composite patch on the composite structure, while avoiding overheating a fiber in the composite patch; andoperating the rework system, controlling the laser unit, a number of laser beams resulting in the desired level of heating of the composite patch that cures the composite patch on the composite structure.17. The method of claim 16 , wherein the operating step comprises:identifying parameters for operating the rework system to generate the number of laser beams resulting in the desired level of heating of the composite patch that cures the composite patch on the composite structure; andoperating the rework system using the parameters identified to generate the number of laser beams resulting in the desired level of heating of the composite patch that cures the composite patch on the composite structure.18. The method of claim 17 , wherein the operating step further comprises:monitoring heating of the composite patch during operation of the rework system using the parameters identified to generate the number of laser beams resulting in the desired level ...

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13-01-2022 дата публикации

LASER SYSTEMS AND TECHNIQUES FOR WORKPIECE PROCESSING UTILIZING OPTICAL FIBERS AND MULTIPLE BEAMS

Номер: US20220009036A1
Принадлежит:

In various embodiments, a workpiece is processed utilizing primary and secondary laser beams having different wavelengths and which are coupled into specialized optical fibers. The primary and secondary beams may be utilized during different stages of workpiece processing. 1. A method of processing a workpiece utilizing a primary laser beam and a secondary laser beam , wherein a wavelength of the primary laser beam is longer than a wavelength of the secondary laser beam , the method comprising:providing a step-core optical fiber having an input end and an output end opposite the input end, wherein the step-core optical fiber comprises (i) an inner core having a first refractive index, (ii) surrounding the inner core, an outer core having a second refractive index smaller than the first refractive index, (iii) surrounding the outer core, a cladding having a third refractive index smaller than the second refractive index, (iv) a first inner core numerical aperture (NA) relative to the cladding, (v) a second inner core NA relative to the outer core, and (vi) an outer core NA relative to the cladding;disposing a workpiece proximate the output end of the optical fiber;during a first stage, coupling at least the secondary laser beam into the optical fiber to form a first output beam emitted from the output end of the optical fiber and directed to a surface of the workpiece, whereby energy of the first output beam is absorbed by the workpiece; andduring a second stage after at least a portion of the surface of the workpiece reacts to absorption of energy of the first output beam, (i) coupling at least the primary laser beam into the optical fiber to form a second output beam emitted from the output end of the optical fiber and directed to the surface of the workpiece, and (ii) thereduring, causing relative movement between the second output beam and the workpiece, whereby the workpiece is cut along a processing path determined at least in part by the relative movement.2. ...

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13-01-2022 дата публикации

Method for the Lacquer-Removing Laser Machining of a Painted Workpiece

Номер: US20220009037A1
Автор: Lacour Thomas

A method for the material-removing laser machining of a workpiece, comprising a substrate element made from a plastic with a surface, and a lacquer coating applied to the surface prior to the laser machining, wherein the lacquer coating can be removed from a workpiece with a three-dimensional extent in a large-area region of the surface. 1. A method for the material-removing laser machining of a workpiece , comprising a substrate element made from a plastic with a surface , and a lacquer coating applied to the surface prior to the laser machining , wherein the laser machining is carried out by a laser machining device which comprises a laser unit and a control unit for controlling the laser unit , the method comprising:arranging the workpiece in a machining position in a work region of the laser unit,generating values for operating parameters for operating the laser unit,{'b': '4', 'generating and emitting a laser beam by the laser unit () according to the generated values for the operating parameters,'}applying the emitted laser beam to the workpiece arranged in the machining position at a machining point in the region of the surface of the workpiece provided with the lacquer coating, so that material of the lacquer coating is removed locally at the machining point,moving the laser beam and thus also the machining point according to the generated values for the operating parameters by the laser unit relative to the workpiece along a work path in the region of the surface of the workpiece provided with the lacquer coating, so that material of the lacquer coating is removed along the work path,wherein the machining point is moved along a plurality of adjacent work paths, wherein adjacent work paths are so close to one another that a machining point of the laser beam on one work path adjoins or partially overlaps a machining point of the laser beam on an adjacent work path in order to remove material of the lacquer coating over a large region, and that the laser unit ...

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07-01-2021 дата публикации

LASER MACHINING DEVICE AND LASER MACHINING METHOD

Номер: US20210005476A1
Автор: SHIONOYA Takao
Принадлежит: Tokyo Seimitsu Co., Ltd.

Provided are a laser machining device and a laser machining method capable of stably operating an autofocus function without causing an unfavorable state such as an overshoot etc. A laser machining device and a laser machining method of the present invention performs a normal AF (autofocus) control when a scan position of the machining laser light and the detecting laser light is located in a work central portion, and performs a slow-tracking AF (autofocus) control with a trackability to a displacement of a main surface of a work reduced to be lower than a trackability of the normal AF control when the scan position of the machining laser light and the detecting laser light is located in a work end portion. 1. A laser machining device which condenses a machining laser light inside a work to form a modified region inside the work along a planned dividing line , the laser machining device comprising:a condensing lens configured to condense the machining laser light and a detecting laser light toward the work;a scanner configured to relatively move the condensing lens and the work in a direction orthogonal to an optical axis direction of the condensing lens, to scan the machining laser light and the detecting laser light over the work;an adjuster configured to adjust a distance between the condensing lens and the work;a detector configured to detect a reflected light to output a detection signal according to a height of a main surface of the work, the reflected light being the detecting laser light reflected on the main surface of the work;a first controller configured to control, based on the detection signal output by the detector, the adjuster so as to cause a light condensing point of the detecting laser light to track a displacement of the main surface of the work, in case where a scan position of the machining laser light and the detecting laser light is in a central portion of the work; anda second controller configured to control, based on the detection signal ...

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11-01-2018 дата публикации

Laser patterning apparatus for three-dimensional object

Номер: US20180008370A1
Принадлежит: Advanced Technology Inc

A laser patterning apparatus for a three-dimensional object includes a laser generator, a beam expander configured to adjust a size of a laser beam generated by the laser generator, a dynamic focusing module configured to adjust a z-axis focus position of the laser beam passing through the beam expander, a scan head configured to adjust x- and y-axis focus position of the laser beam passing through the beam expander, a shape recognizer configured to recognize a shape of a three-dimensional object, and a controller configured to extract x-, y-, and z-axis data of the three-dimensional object and to control the scan head and the dynamic focusing module, in order to pattern the three-dimensional object with the laser beam.

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14-01-2021 дата публикации

DEVICE FOR CUTTING A WEB OF MATERIAL

Номер: US20210007901A1
Принадлежит:

A device for cutting a web of material comprises movement means for moving a web of material to be cut, defining a feed path for the web at least partly rotatable about a central axis and equipped with at least one conveyor mounted around the central axis, at least one cutting head equipped with a laser source and an optical system configured to direct the laser beam towards a cutting zone, where the optical system of the cutting head comprises at least one directing member located inside the conveyor to direct the laser beam away from the central axis towards the cutting zone. 1. A device for cutting a web of material , comprising:movement means by which a web of material to be cut is made to advance and defining for the web a feed path which is at least partly rotatable about a central axis; the movement means comprising at least a conveyor mounted around the central axis and defining an at least partly curved cutting zone;at least one laser cutting head laser equipped with a laser source configured to generate a laser beam, and an optical system configured to direct the laser beam towards the cutting zone;Wherein the optical system of the cutting head comprises at least one directing member located inside the conveyor to direct the laser beam away from the central axis towards the cutting zone; the directing member being rotatable about its axis of rotation and oriented in such a way that the laser beam defines on the web a cutting line transversal to the feed path of the web.2. The device according to claim 1 , wherein the conveyor constitutes a curved feed surface for the web and is equipped claim 1 , at the cutting zone claim 1 , with at least one permeable portion permeable to the laser beam and facing the directing member claim 1 , so as to allow the laser beam to pass through the feed surface.3. The device according to claim 2 , wherein the permeable portion is defined by a through opening.4. The device according to claim 2 , wherein the permeable portion ...

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02-01-2020 дата публикации

Metal Sublayer Sensing In Multi-Layer Workpiece Hole Drilling

Номер: US20200008303A1
Автор: Soffer Guy
Принадлежит:

Disclosed herein is a system for drilling in a multilayer printed circuit board. The system includes a source of electromagnetic radiation configured to transmit a measurement pulse in open air to a workpiece, an anode, a resettable electric charge sensor (ECS), operably connected to the anode, and a control unit, configured to receive at least one value indicative of the quantity of at least part of charged molecules received at the anode and determine a second value indicative of the quantity of charged molecules received at the anode that were derivative of emitted electrons responsive to the measurement pulse. 111-. (canceled)12. A system comprising:a source of electromagnetic radiation configured to transmit a measurement pulse in open air to a workpiece, the pulse having at least one wavelength with higher energy than a work-function of a metal layer of the workpiece, and giving rise to electrically charged molecules deriving from free electrons that were emitted by the metal layer in the workpiece, the quantity of free electrons emitted being dependent on the extent of exposure of the metal of the workpiece;an anode;a resettable electric charge sensor (ECS), operably connected to the anode; receive, from the ECS, at least one value indicative of the quantity of at least part of charged molecules received at the anode since ECS activation,', 'determine, from the at least one value, a second value indicative of the quantity of charged molecules received at the anode that were derivative of emitted electrons responsive to the measurement pulse;, 'a control unit, operably connected to the ECS, and configured to compare at least part of said second value or at least one combination of at least part of said second value to at least one threshold, or calculate an envelope of at least part of said second value or of at least part of said at least one combination, said at least one control unit being further configured to perform at least one of:', 'identify at least ...

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11-01-2018 дата публикации

Laser Processing Robot System for Performing Laser Processing Using Robot

Номер: US20180009059A1
Автор: AOKI Toshimichi
Принадлежит: FANUC Corporation

A laser processing robot system, in which an augmented reality processing technology is used to enable a processing laser beam and its irradiation position to be safely and easily seen, is provided. A laser processing robot system includes an image processing device having an augmented reality image processing unit for performing augmented reality image processing for an actual image including an image of a robot captured by an imaging device. The augmented reality image processing unit is adapted to superimpose a virtual image representing at least one of a laser beam obtained by assuming that the laser beam is emitted from a laser irradiation device to a workpiece, and an irradiation position of the laser beam, onto the actual image, and to display the superimposed image on the display device. 1. A laser processing robot system for performing laser processing of a workpiece , using a robot having an arm to which a laser irradiation device for emitting a laser beam for processing is attached , the laser processing robot system comprising:a robot control device which causes the robot to perform an operation of the laser processing without output of the laser beam;an imaging device for capturing an actual image including the robot which is caused to perform an operation of the laser processing without output of the laser beam;a display device for displaying, in real time, the actual image; andan image processing device which is connected to the robot control device and which has an augmented reality image processing unit for performing augmented reality image processing of the actual image, whereinthe augmented reality image processing unit is adapted to superimpose a virtual image representing at least one of a laser beam obtained by assuming that the laser beam is emitted from the laser irradiation device to the workpiece, and an irradiation position of the laser beam, onto the actual image, and to display the superimposed image on the display device.2. The laser ...

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14-01-2021 дата публикации

Laser marking system and method for laser marking a workpiece

Номер: US20210008663A1
Принадлежит: MECCO Partners LLC

A laser marking system for marking a predetermined pattern on a workpiece may include a first light source structured to emit first light at a first wavelength; a second light source structured to emit second light at a second wavelength different from the first wavelength and selected to mark a marking surface of the workpiece; beam shaping optics structured to adjust a focal length of the second light; beam steering optics structured to aim the first laser light and the second laser light; a controller configured to control the first light source to emit the first light at the marking surface of the workpiece and control the beam steering optics to aim the second light so as to mark the marking surface of the workpiece and create the first predetermined pattern; and a camera structured to detect first light reflected from the marking surface and record an image.

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10-01-2019 дата публикации

ADDITIVE MANUFACTURING IN METALS WITH A FIBER ARRAY LASER SOURCE AND ADAPTIVE MULTI-BEAM SHAPING

Номер: US20190009358A1
Автор: Vorontsov Mikhail A.
Принадлежит:

A system for LAM that uses a scalable array of individually controllable laser beams that are generated by a fiber array system to process materials into an object using a powder bed, wire feed, or direct deposition. The adaptive control of individual beams may include beam power, focal spot width, centroid position, scanning orientation, amplitude and frequency, piston phase and polarization states of individual beams. These characteristics can be independently adjusted to control LAM characteristics including microstructure, mechanical and surface quality characteristics. The system may also have a set of material sensors that gather information on a material and environment immediately before, during, and immediately after processing. This information can be used to adapt the material processing routine to improve LAM productivity and parts quality. The system also supports a variety of beam shaping methods that improve the quality of produced objects or mitigate processing issues. 1. An additive manufacturing system comprising:(a) a manufacturing surface comprising a material and a target object; (i) a fiber array laser head comprising a set of fiber-based laser transmitters, and', '(ii) a multi-channel optical power amplifier system comprising one or more controllers, the multi-channel optical power amplifier system operable to provide laser power to each of the set of fiber-based laser transmitters, and to provide control signals to generate and modify spatiotemporal laser power distribution formed by the set of laser beams at the material;, '(b) a laser transmitter module operable to produce a set of laser beams to heat the material, comprising(c) a beam rastering system operable to position the set of laser beams relative to the target object;(d) a beam rastering controller, wherein the beam rastering controller is communicatively coupled with the laser transmitter module and the beam rastering system; (i) receive a target object definition, the target ...

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10-01-2019 дата публикации

Metal Sublayer Sensing In Multi-Layer Workpiece Hole Drilling

Номер: US20190009359A1
Автор: Soffer Guy
Принадлежит:

Disclosed herein is a method of drilling in a multilayer printed circuit board. The method includes drilling a one hole; directing electromagnetic radiation having at least one wavelength with higher energy than a work-function the metal layer toward the hole, and thus causing the metal layer to emit free electrons; and measuring the quantity or intensity of electrically charged particles derived from the emitted free electrons, to detect the extent of exposure or disappearance of the metal layer during drilling. 125-. (canceled)26. A system , comprising:at least one drilling laser for drilling in a workpiece;at least one electromagnetic radiation source having at least one wavelength with higher energy than a work-function of at least one metal layer in said workpiece;optical conveying means for directing electromagnetic radiation from said at least one source and from said at least one drilling laser toward said workpiece; andan anode, the anode having a voltage sufficient to impose an electric field that accelerates at least part of electrically charged molecules deriving from free electrons that were emitted by at least one metal layer in the workpiece due to the photoelectric effect responsive to the electromagnetic radiation, thereby causing at least part of said electrically charged molecules to arrive at the anode.27. The system of claim 26 , further comprising:at least one electric current sensor configured to measure at least one value that is indicative of quantity or intensity of said electrically charged molecules having movement which was affected by the anode, said at least one measured value being useable for indicating at least one of: exposure or disappearance of said at least one metal layer during drilling.28. The system of claim 26 , wherein at least part of said optical conveying means is used both for electromagnetic radiation from said at least one source and for electromagnetic radiation from said drilling laser.29. The system of claim 26 , ...

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03-02-2022 дата публикации

SYSTEMS AND METHODS FOR IDENTIFYING MISSING WELDS USING MACHINE LEARNING TECHNIQUES

Номер: US20220032396A1
Автор: Ivkovich Stephen Paul
Принадлежит:

Systems and methods for missing weld identification using machine learning techniques are described. In some examples, a part tracking system uses machine learning techniques to identify whether an operator has missed one or more welds when assembling a part. The part tracking system may additionally identify which specific welds were missed (e.g., the first weld, the third weld, the fifteenth weld, etc.). The part tracking system may be able to identify missing welds after a part has been completed, or in real-time, during assembly of the part. Identification of the particular weld(s) missed during the welding process can help an operator quickly assess and resolve any issues with the part being assembled, saving time and ensuring quality 1. A system , comprising:processing circuitry; and identify a plurality of sequential welds used to assemble a part during a part assembly process,', 'access one or more feature characteristics of the plurality of sequential welds,', 'access one or more missing weld part models, each of the one or more missing weld part models being representative of the part having one or more missing welds,', 'determine an analogous missing weld part model of the one or more missing weld part models that is most similar to the plurality of sequential welds, and', 'provide an output identifying the one or more missing welds of the analogous missing weld part model., 'memory circuitry comprising computer readable instructions which, when executed, cause the processing circuitry to2. The system of claim 1 , wherein one or more machine learning techniques are used to determine the analogous missing weld part model most similar to the plurality of sequential welds.3. The system of claim 1 , wherein each missing weld part model of the one or more missing weld part models is representative of the part having at least one different missing weld than every other missing weld part model of the one or more missing weld part models.4. The system of claim 1 ...

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03-02-2022 дата публикации

SYSTEMS AND METHODS FOR IDENTIFYING MISSING WELDS USING MACHINE LEARNING TECHNIQUES

Номер: US20220032397A1
Автор: Ivkovich Stephen Paul
Принадлежит:

Systems and methods for missing weld identification using machine learning techniques are described. In some examples, a part tracking system uses machine learning techniques to identify whether an operator has missed one or more welds when assembling a part. The part tracking system may additionally identify which specific welds were missed (e.g., the first weld, the third weld, the fifteenth weld, etc.). The part tracking system may be able to identify missing welds after a part has been completed, or in real-time, during assembly of the part. Identification of the particular weld(s) missed during the welding process can help an operator quickly assess and resolve any issues with the part being assembled, saving time and ensuring quality 1. A system , comprising:processing circuitry; and identify an initial weld of a part assembly process,', 'access one or more first feature characteristics of the initial weld,', 'access a typical part model representative of a part produced by the part assembly process with all required welds,', 'determine whether the part includes an initial required weld based on a comparison of at least some of the first feature characteristics of the initial weld with at least some first typical feature characteristics associated with an initial typical weld of the typical part model, and', 'in response to determining that the part does not include the initial required weld, output a notification., 'memory circuitry comprising computer readable instructions which, when executed, cause the processing circuitry to2. The system of claim 1 , wherein one or more machine learning techniques are used to determine whether the part includes the initial required weld.3. The system of claim 1 , wherein the memory circuitry further comprises computer readable instructions which claim 1 , when executed claim 1 , cause the processing circuitry to:in response to determining that the part does not include the initial required weld, disable one or more pieces ...

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03-02-2022 дата публикации

SYSTEM FOR CONTROLLING OVERLAPPING IN SINGLE-LAYER LASER CLADDING OF A SHAFT-LIKE WORKPIECE

Номер: US20220032400A1
Принадлежит:

A system for controlling overlapping in single-layer laser cladding of a shaft-like workpiece includes an acceleration time calculation module, a feed shaft displacement calculation module and a module for adjusting an initial zero position of a laser head in a feed direction. Using the system, the motions of the spindle and the feed shaft are planned based on an S-curve acceleration and deceleration method. The motion planning is dynamically adjusted considering the overlapping rate and the clamping allowance of the workpiece to be cladded in a feed direction. 1. A system for controlling overlapping in single-layer laser cladding of a shaft-like workpiece , comprising:an acceleration time calculation module, for obtaining a shaft diameter of the shaft-like workpiece to be processed, a feed rate of a feed shaft and a laser cladding width; obtaining a calculation formula of an overlapping rate; planning a motion of the feed shaft and a motion of a spindle based on a rotational velocity of the spindle and an S-curve acceleration and deceleration planning algorithm; and calculating a feed velocity of the feed shaft to obtain acceleration time of the spindle and acceleration time of the feed shaft;a feed shaft displacement calculation module, for determining whether the acceleration time of the spindle is equal to the acceleration time of the feed shaft; if yes, calculating a displacement of the feed shaft; otherwise, determining whether the acceleration time of the spindle is greater than the acceleration time of the feed shaft;if yes, after the feed shaft accelerates to a preset velocity, keeping the feed shaft at the preset velocity for a period of uniform motion until the spindle reaches the preset velocity; otherwise, re-planning a motion of the spindle according to S-curve acceleration and deceleration; adding a period of uniform acceleration motion for the spindle or reducing a maximum jerk of the spindle to make the acceleration time of the spindle equal to the ...

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19-01-2017 дата публикации

LASER PROCESSING APPARATUS

Номер: US20170014947A1
Принадлежит:

A laser beam irradiation unit of laser processing apparatus includes a pulse laser beam oscillating unit, a condenser that condenses a pulse laser beam and emits the beam to a workpiece held by a chuck table, a dichroic mirror disposed between the pulse laser beam oscillating unit and the condenser, a strobe light irradiation unit that emits light to a path on which the dichroic mirror and the condenser are disposed, a beam splitter disposed between the strobe light irradiation unit and the dichroic mirror, and an imaging unit disposed on the path of light split by the beam splitter. A controller actuates the strobe light irradiation unit and the imaging unit according to the timing of the pulse laser beam, and detects the width of a laser-processed groove immediately after emission of the pulse laser beam on the basis of an image signal from the imaging unit. 1. A laser processing apparatus comprising:a chuck table that holds a workpiece;laser beam irradiating means that irradiates the workpiece held by the chuck table with a pulse laser beam;X-axis direction moving means that moves the chuck table and the laser beam irradiating means relatively in an X-axis direction that is a processing feed direction;Y-axis direction moving means that moves the chuck table and the laser beam irradiating means relatively in a Y-axis direction that is an indexing feed direction orthogonal to the X-axis direction; andcontrol means that controls the laser beam irradiating means, the X-axis direction moving means, and the Y-axis direction moving means, pulse laser beam oscillating means that oscillates the pulse laser beam,', 'a condenser that condenses the pulse laser beam oscillated from the pulse laser beam oscillating means and emits the pulse laser beam to the workpiece held by the chuck table,', 'a dichroic mirror that is disposed between the pulse laser beam oscillating means and the condenser and reflects the pulse laser beam oscillated from the pulse laser beam oscillating ...

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19-01-2017 дата публикации

METHOD OF DETERMINING QUALITY OF CLADDING LAYER AND LASER BUILD-UP APPARATUS

Номер: US20170014953A1
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A method of determining a quality of a cladding layer according to one aspect of the present invention is a method of determining a quality of a cladding layer formed by irradiating a laser beam while a metallic powder is being supplied, the method including: a process of capturing an image of a melt pool and an area around thereof while the cladding layer is being formed; a process of measuring the sizes and the number of ball-shaped metallic powder aggregates absorbed in the melt pool from the image that has been captured; and a process of determining the quality of the cladding layer based on the sizes and the number that have been measured. 1. A method of determining a quality of a cladding layer formed by irradiating a laser beam while a metallic powder is being supplied , the method comprising:a process of capturing an image of a melt pool and an area around thereof while the cladding layer is being formed;a process of measuring the sizes and the number of ball-shaped metallic powder aggregates absorbed in the melt pool from the image that has been captured; anda process of determining the quality of the cladding layer based on the sizes and the number that have been measured.2. The method of determining the quality of the cladding layer according to claim 1 , wherein an optical axis of the laser beam that illuminates the melt pool is made coincident with an optical axis of light to capture the image of the melt pool and the area around thereof.3. A laser build-up apparatus comprising:a supply part that supplies a metallic powder; anda laser oscillator that outputs a laser beam, wherein:a cladding layer is formed by irradiating the laser beam while the metallic power is being supplied from the supply part, an image-capture unit that captures an image of a melt pool and an area around thereof; and', 'a measurement unit that measures the sizes and the number of ball-shaped metallic powder aggregates absorbed in the melt pool from the image that has been captured ...

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15-01-2015 дата публикации

Laser processing apparatus and laser processing method

Номер: US20150017817A1
Принадлежит: Aisin Seiki Co Ltd, Toyota Motor Corp

A laser processing apparatus includes a laser beam generating device that generates a first pulse laser beam for temporarily increasing a light absorptance in a predetermined region of a processing object, and a second pulse laser beam to be absorbed in the predetermined region in which the light absorptance has temporarily increased, and a support portion that is provided on a downstream of the first pulse laser beam and the second laser beam generated by the laser beam generating device and has a placement surface for placing the processing object. The laser beam generating device emits the second pulse laser beam with a delay with respect to the first pulse laser beam by a delay time within a predetermined period of time before the light absorptance that has temporarily increased in the predetermined region returns to an original value.

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17-01-2019 дата публикации

AXIS CALIBRATION OF BEAM PROCESSING MACHINES

Номер: US20190015928A1
Принадлежит:

In a method for determining a deviation of a spatial orientation of a beam axis (S) of a beam processing machine from a spatial nominal orientation (S) of the beam axis (S), contour sections (KA, KB) are cut with a processing beam into a test workpiece from two sides of the workpiece. The contour sections (KA, KB) extend parallel to a nominal orientation of a rotation axis (B, C), where the rotation axis is to be calibrated. The contour sections (KA, KA) are probed from one side of the test workpiece by a measuring device for determining the spatial position of the contour sections (KA, KB). Deviation of the spatial orientation of the beam axis (S) of the beam processing machine from the spatial nominal orientation (S) is determined based on the spatial positions of the contour sections (KA, KB). 1. A method for determining a deviation of a spatial orientation of a beam axis of a beam processing machine from a nominal orientation of the beam axis , the beam processing machine having a rotation axis that is to be calibrated , and a measuring device , the method comprising:cutting, into a test workpiece, a first contour section and a second contour section by a processing beam from a first side and a second side of the test workpiece, respectively, wherein the first side is delimited by a first surface of the test workpiece and the second side is delimited by a second surface of the test work piece and each of the first and the second contour sections extend parallel to a nominal orientation of the rotation axis that is to be calibrated,probing, by the measuring device and from one side of the test workpiece, the first and the second contour sections to determine a spatial position of each of the first and the second contour sections, anddetermining a deviation of the spatial orientation of the beam axis of the beam processing machine from the nominal orientation by comparing the spatial positions of the first and the second contour sections with respective nominal ...

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16-01-2020 дата публикации

Marking system for decorating workpieces

Номер: US20200016690A1
Принадлежит:

A marking system for decorating one or more workpieces includes a plurality of marking stations that can mark product images on blank workpieces to produce product workpieces, at least some of which have different sizes, shapes, materials, or a combination thereof, a control system that can select one of the plurality of marking stations and send product image data to the selected one of the plurality of marking stations, and a robotic manipulator that can transport a blank workpiece to the selected marking station under the control of the robotic manipulator. The selected marking station can mark the product image the blank workpiece based on the product image data which produces a product workpiece. The robotic manipulator can remove the product workpiece from the selected one of the plurality of marking stations. 1. A marking system for decorating one or more workpieces , comprising:a plurality of marking stations configured to mark product images on blank workpieces to produce product workpieces, at least some of which have different sizes, shapes, materials, or a combination thereof;a control system configured to select one of the plurality of marking stations and send product image data to the selected one of the plurality of marking stations; anda robotic manipulator configured to transport a blank workpiece to the selected one of the plurality of marking stations under the control of the robotic manipulator,wherein the selected one of the plurality of marking stations is configured to mark the product image the blank workpiece based on the product image data which produces a product workpiece,wherein the robotic manipulator is configured to remove the product workpiece from the selected one of the plurality of marking stations.2. The marking system of claim 1 , wherein at least one of the blank workpieces is labeled with a blank workpiece identification code claim 1 , the marking system further comprising:a workpiece scanner configured to scan the blank ...

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16-01-2020 дата публикации

TOOL ARRANGEMENT AND METHOD FOR ACCOMMODATING AN OPTICAL TOOL IN A PARK POSITION

Номер: US20200016693A1
Принадлежит: VOLKSWAGEN AKTIENGESELLSCHAFT

A tool arrangement is provided for accommodating portions of an optical tool in a park position, having an optical tool and having a housing with an opening suitable for accommodating portions of the optical tool in a housing interior, with a housing discharge connected to the housing in a fluid-conducting manner, and with a sealing sleeve arranged at the opening of the housing, wherein the sealing sleeve has a fluid-carrying line for adapting a variable fill volume of the sealing sleeve. In addition, a method is provided for accommodating portions of an optical tool in a park position. 1. A tool arrangement to accommodate portions of an optical tool in a park position , the arrangement comprising:an optical tool;a housing with an opening adapted to accommodate portions of the optical tool in a housing interior;a housing discharge connected to the housing in a fluid-conducting manner; anda sealing sleeve arranged at an opening of the housing, the sealing sleeve having a fluid-carrying line for adapting a variable fill volume of the sealing sleeve.2. The tool arrangement according to claim 1 , wherein a space between an edge of the opening of the housing and the partially accommodated optical tool is sealed by the sealing sleeve claim 1 , and wherein the sealing sleeve is made of a flexible material.3. The tool arrangement according to claim 1 , wherein the opening of the housing is round and the sealing sleeve is arranged along a circumference of the round opening of the housing.4. The tool arrangement according to claim 1 , wherein a fluid for maintaining a degree of cleanliness in the housing interior is introduced into the housing interior from a fluid supply of the optical tool and/or through a housing supply line.5. The tool arrangement according to claim 1 , wherein the tool arrangement has a power meter claim 1 , which is arranged in the housing to monitor a function of the optical tool claim 1 , and wherein a deviation of an actual value of the optical tool ...

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21-01-2021 дата публикации

ADJUSTMENT ASSISTANCE DEVICE AND LASER WELDING APPARATUS

Номер: US20210016389A1
Принадлежит: FANUC Corporation

An adjustment assistance device is attached to a galvanometer scanner at a laser output side of the galvanometer scanner and used to adjust a tool coordinate system of the galvanometer scanner. The adjustment assistance device includes a light-receiving member having a light-receiving surface, which is at least one flat surface; and a connecting member that connects the light-receiving member to the galvanometer scanner and that enables the light-receiving surface to face a laser output port of the galvanometer scanner with a predetermined distance therebetween. The light-receiving member includes a light-receiving mark portion on the light-receiving surface, the light-receiving mark portion being a mark used to quantify a relative positional difference between a reference light-receiving position for light output from the laser output port and an actual light-receiving position at which the light output from the laser output port is received. 1. An adjustment assistance device attached to a galvanometer scanner at a laser output side of the galvanometer scanner and used to adjust a tool coordinate system of the galvanometer scanner , the adjustment assistance device comprising:a light-receiving member having a light-receiving surface, which is at least one flat surface; anda connecting member that connects the light-receiving member to the galvanometer scanner, the connecting member enabling the light-receiving surface to face a laser output port of the galvanometer scanner with a predetermined distance therebetween,wherein the light-receiving member includes a light-receiving mark portion on the light-receiving surface, the light-receiving mark portion being a mark used to quantify a relative positional difference between a reference light-receiving position for light output from the laser output port and an actual light-receiving position at which the light output from the laser output port is received.2. The adjustment assistance device according to claim 1 , ...

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17-04-2014 дата публикации

System and method for component material addition

Номер: US20140106068A1
Принадлежит: Dave Keicher, Ed Tucker, Gregory Thomas Krause

A system is disclosed for depositing material on a component. The system includes a deposition device operatively coupled to a fiber optic Nd:YAG laser. The deposition device includes a focusing prism that focuses the Nd:YAG laser at a focal area on a bladed disk, where the focal area on the bladed disk is between two blades of the disk. The system further includes an imaging means that views the focal area of the component. The imaging means and the fiber optic Nd:YAG laser each are positioned in a substantially similar optical relationship to the focal area on the bladed disk. The system further includes an additive material delivery means that delivers additive material to the component at the focal area on the component.

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25-01-2018 дата публикации

SIMULTANEOUS PATTERN-SCAN PLACEMENT DURING SAMPLE PROCESSING

Номер: US20180021885A1
Принадлежит:

A laser ablation system, and method, facilitates the execution of user-defined scans (i.e., in which a laser beam is scanned across a sample along a beam trajectory to ablate or dissociate a portion of the sample) and enables the user define additional scans while a scan is being executed. 1. A method for use with a laser ablation system having a sample chamber accommodating a sample within an interior thereof , a laser configured to generate a laser beam having parameters suitable for ablating or otherwise dissociating a portion of the sample within the sample chamber , and at least one scanning component configured to impart relative movement between the sample and the laser beam , the method comprising:processing image data, representative of obtained imagery of the sample, to generate location data, the location data associating at least one location within the obtained imagery with at least one corresponding spatial location within the interior of the sample chamber;controlling an operation of at least one selected from the group consisting of the laser and the at least one scanning component to execute a first scan in a first region-of-interest of the sample where the sample is to be ablated or otherwise dissociated by the laser beam; andwhile controlling an operation of at least one of the laser and the motion stage to execute the first scan, generating and storing scan data defining a second scan to be executed in a second region-of-interest of the sample where the sample is to be ablated or otherwise dissociated by the laser beam.2. The method of claim 1 , prior to controlling the operation of at least one of the laser and the at least one scanning component to execute the first scan claim 1 , generating and storing scan data defining the first scan.3. The method of claim 1 , further comprising generating and storing scan data defining the first scan in response receiving user input obtained through a user interface.4. The method of claim 1 , after ...

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24-01-2019 дата публикации

APPARATUS FOR MANUFACTURING THREE-DIMENSIONAL OBJECTS

Номер: US20190022790A1
Принадлежит: CL SCHUTZRECHTSVERWALTUNGS GMBH

Apparatus () for additively manufacturing of three-dimensional objects () by means of successive layerwise selective irradiation and consolidation of layers of a build material () which can be consolidated by means of an energy beam, wherein a direct measuring unit () is provided for determining a position and/or a travel distance of at least one moveable component () of the apparatus (). 1123451. Apparatus () for additively manufacturing of three-dimensional objects () by means of successive layerwise selective irradiation and consolidation of layers of a build material () which can be consolidated by means of an energy beam , characterized in that a direct measuring unit () is provided for determining a position and/or a travel distance of at least one moveable component () of the apparatus ().2745. Apparatus according to claim 1 , characterized by a coupling means with at least one coupling means () configured to couple the direct measuring unit () with the component ().371051112. Apparatus according to claim 2 , characterized in that the coupling means () comprises a redirection means () configured to redirect a movement of the movable component () directed along a first movement direction and/or a first axis () into a movement of the direct measuring means along a second movement direction and/or a second axis ().47. Apparatus according to claim 2 , characterized in that at least one coupling means () is a pulling means and/or a pushing means.57. Apparatus according to claim 2 , characterized in that at least one coupling means () is built of or comprises flexible material and/or low elongation material.6715. Apparatus according to claim 2 , characterized in that at least one coupling means () is or comprises a rope and/or a wire and/or a chain and/or a rod and/or a spring and/or a pneumatic element () and/or a hydraulic element.7107. Apparatus according to claim 3 , characterized in that the redirection means () is built as a redirection roll guiding and/or ...

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24-01-2019 дата публикации

METHOD FOR PERFORMING A NOISE REMOVAL OPERATION ON A SIGNAL ACQUIRED BY A SENSOR AND SYSTEM THEREFROM

Номер: US20190022791A1
Принадлежит: C.R.F. Societa Consortile per Azioni

A method for performing a noise removal operation includes decomposing an acquired signal considered as one dimensional series. A trajectory matrix is constructed, transforming the trajectory matrix in a form to which single value decomposition is applicable. A single value decomposition is done on the transformed matrix computing eigenvalues and eigenvectors of the matrix. A one dimensional series is reconstructed, corresponding to the denoised signal. After the single value decomposition operation is provided, a single value decomposition is applied sequentially starting from a given window value. For each iteration, the root mean square value is calculated between a current and previous eigenvalue, calculating a minimum and its position of said root mean square value. The iterations are halted if the minimum is lower than a determined threshold value, otherwise increasing the window value and returning to the operation of decomposition of the acquired signal. 1. A method for performing a noise removal operation on a signal acquired by a sensor obtaining a denoised signal , said noise removal operation including a Singular Spectrum Analysis , an operation of decomposition of said acquired signal considered as one dimensional series,', 'an operation of construction of a trajectory matrix, transforming said trajectory matrix in a form to which single value decomposition is applicable,', 'an operation of single value decomposition on said transformed matrix computing eigenvalues and eigenvectors of said matrix,', 'an operation of reconstruction of a one dimensional series corresponding to said denoised signal based on selected among said eigenvalues,', 'wherein after the single value decomposition operation is provided;', 'applying sequentially a single value decomposition starting from a given window value, in particular a value of three,', 'for each iteration, calculating the root mean square value between the current and previous eigenvalue, calculating a minimum ...

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24-01-2019 дата публикации

OPTICAL NON-DESTRUCTIVE INSPECTION METHOD AND OPTICAL NON-DESTRUCTIVE INSPECTION APPARATUS

Номер: US20190022792A1
Принадлежит: JTEKT CORPORATION

An optical non-destructive inspection method includes: a heating laser emission step; an information acquisition step of acquiring measurement point information and heating laser information; a joint state determination step of determining the joint state on the basis of the measurement point information and the heating laser information; and a preliminary heating step, which is performed before the heating laser emission step, of causing thermal distortion in a first member by irradiating a measurement point, or a preliminary heating range that includes the measurement point, or a preliminary heating point set in the preliminary heating range, with preliminary heating laser adjusted to a thermal distortion generation intensity, which is a constant output intensity, and an irradiation time such that the thermal distortion is caused without destroying the first member. 1. An optical non-destructive inspection method of determining a joint state of a joint portion on a joint interface between a first member and a second member of a measurement target object on the basis of measurement point information acquired from a measurement point set on a surface of the first member by irradiating the measurement point with heating laser , or on the basis of heating laser information about the heating laser and the measurement point information , the first member and the second member being joined to each other on the joint interface or being joined to each other with a joint member interposed between the first member and the second member on the joint interface , the optical non-destructive inspection method comprising:a heating laser emission step of emitting the heating laser toward the measurement point to heat the measurement point;an information acquisition step of acquiring the measurement point information which includes an intensity of infrared light radiated from the measurement point, or an information acquisition step of acquiring the measurement point information ...

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24-01-2019 дата публикации

DETECTION OF HOT CRACKS IN LASER WELDING

Номер: US20190022793A1
Принадлежит:

Methods for determining the quality of a weld of a workpiece welded by laser-beam welding, wherein at least a partial region of a molten pool and/or of a surrounding area of the molten pool is observed by means of a measuring system during the laser-beam welding and the quality of the weld of the welded workpiece is determined on the basis of the observation result. At least one characteristic value that correlates with molten pool oscillation of the molten pool is observed during the laser-beam welding and a measure of an amplitude of the molten pool oscillation and/or a measure of a frequency of the molten pool oscillation is determined from the observed time curve of the characteristic value. A probability and/or a frequency for the occurrence of hot cracks at the weld of the workpiece is inferred. 1. A method for determining quality of a weld seam of a workpiece welded by laser beam welding along the weld seam , the method comprising:monitoring, with a measuring system during a laser beam welding operation, at least one parameter that correlates to a molten bath oscillation of a molten bath during the laser beam welding operation;establishing, from the at least one parameter, a measurement variable for an amplitude of the molten bath oscillation and/or a measurement variable for a frequency of the molten bath oscillation;determining a probability and/or a frequency of occurrence for the appearance of hot cracks in the weld seam of the workpiece from the measurement variable for the amplitude of the molten bath oscillation and/or the measurement variable for the frequency of the molten bath oscillation; anddetermining quality of the weld seam of the workpiece based on the probability and/or frequency of occurrence for the appearance of hot cracks in the weld seam.2. The method of claim 1 , wherein determining the probability and/or frequency of occurrence for the appearance of hot cracks comprises comparing the measurement variable for the amplitude of the molten ...

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24-01-2019 дата публикации

Laser machining apparatus that machines surface of workpiece by irradiating laser beam thereon

Номер: US20190022794A1
Принадлежит: Brother Industries Ltd

In a laser machining apparatus, a scanner is configured to scan a laser beam emitted from a laser beam emission device. A first part of a workpiece is exposed through an opening formed in the workpiece. A controller is configured to perform: acquiring shape data indicative of a shape of the workpiece; acquiring machining pattern data indicative of a machining pattern to be machined on the first part; acquiring a length of the machining pattern based on the machining pattern data; calculating an unmachinable position on a setting surface using the length and the shape data, the unmachinable position resulting from a second part of the workpiece hindering the laser beam reaching the first part, at least a part of the machining pattern being unmachinable on the first part in a state where the workpiece is set on the unmachinable position; and displaying the unmachinable position on a display.

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24-01-2019 дата публикации

Machine for laser working of tubes and profiled sections with a scanning system for scanning the tube or profiled section to be worked

Номер: US20190022800A1
Принадлежит: Adige SpA

The machine comprises: a working head ( 12 ) with a focussing device ( 18 ) arranged to focus a laser beam on the surface of the tube or profiled section (T) to be worked, a carriage ( 26 ) on which the working head ( 12 ) is mounted and a scanning system ( 20 ) arranged to scan at least a portion of the outline of the cross-section of the tube or profiled section (T). The carriage ( 26 ) is able to translate with respect to the tube or profiled section (T) both in a longitudinal direction (x) coinciding with the longitudinal axis of the tube or profiled section (T) and in a transverse direction (y). The scanning system ( 20 ) comprises at least one laser scanning module ( 20 ) comprising a laser emitter ( 22 ) arranged to emit a light blade (L) with which to illuminate a portion of the tube or profiled section (T) and a camera ( 24 ) arranged to acquire an image of the portion of tube or profiled section (T) illuminated by the light blade (L). The working head ( 12 ) and the at least one laser scanning module ( 20 ) are mounted on the carriage ( 26 ) so as to be drivingly connected for translation with said carriage ( 26 ) both in the longitudinal direction (x) and in the transverse direction (y).

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23-01-2020 дата публикации

Systems and Methods for Monitoring and/or Controlling Wobble-Processing Using Inline Coherent Imaging (ICI)

Номер: US20200023461A1
Принадлежит:

A system and method may be used to monitor and/or control material processing where a process beam is moved in a wobble pattern, such as a wobble-welding process. While at least one process beam is moved according to a wobble pattern on a processing site (e.g., a weld site) of a workpiece, an ICI system moves an imaging beam at least partially independently of the process beam to one or more measurement locations on the wobble pattern and obtains ICI measurements (e.g., depth measurements) at those locations. The ICI measurement(s) may be used, for example, to evaluate keyhole and/or melt pool characteristics during a welding process. Although the present application describes wobble welding processes, the systems and methods described herein may also be used with other material processing applications where a laser or other energy beam is wobbled or dithered during processing including, without limitation, additive manufacturing, marking and material removal. 1. A laser material processing system comprising:a material modification beam source for generating a process beam;a processing head coupled to the material modification beam source and including at least one process beam scanning actuator, for directing and moving the process beam according to a wobble pattern in at least one axis on a processing site of a workpiece;an inline coherent imaging (ICI) system optically coupled to the processing head, the ICI system including at least one imaging beam scanning actuator for positioning the imaging beam at least partially independently of the process beam; anda control system for controlling at least the material modification beam source, the process beam scanning actuator, and the imaging beam scanning actuator, wherein the control system is programmed to cause the processing head to scan the process beam in the wobble pattern, and wherein the control system is programmed to cause the imaging beam scanning actuator to move the imaging beam to a plurality of ...

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23-01-2020 дата публикации

Method of producing projection path data, processing method, and cam system

Номер: US20200023470A1
Принадлежит: DGshape Corp

A method of producing a projection path data to be used in forming a desired shape by projecting a laser beam into a material, the method includes a first step of converting two-dimensional information representing the desired shape in two dimensions in an XYZ coordinate system into three-dimensional information in an XYZ coordinate system, and a second step of producing the projection path data based on the three-dimensional information that has been converted.

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23-01-2020 дата публикации

DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM USED TO PRODUCE A THREE-DIMENSIONAL WORKPIECE

Номер: US20200023585A1
Принадлежит:

The invention relates to a device () for the layered production of a three-dimensional workpiece, comprising: a build space () in which the workpiece is manufacturable by selectively solidification of raw material powder layers; an irradiating system () which is adapted to selectively solidify the raw material powder layers in the build space () by emitting a processing beam; at least one calibrating structure (); a sensor arrangement () which is adapted to detect an irradiation of the calibrating structure () by the irradiating system (); and a control unit () which is adapted to calibrate the irradiating system () on the basis of detection information of the sensor arrangement, wherein the calibrating structure () is arranged outside the build space (). The invention also relates to a method for calibrating an irradiating system of a device for the layer-by-layer manufacture of a three-dimensional workpiece. 114-. (canceled)15. A device for the layer-by-layer manufacture of a three-dimensional workpiece , comprising:a build space in which the workpiece is manufacturable by selective solidification of raw material powder layers;an irradiation system which is adapted to selectively solidify the raw material powder layers in the build space by emitting at least one processing beam;at least one calibrating structure;a sensor arrangement which is adapted to detect a back reflection of irradiation emitted by the irradiation system at the calibrating structure; and{'b': '26', 'a control unit () which is adapted to calibrate the irradiation system on the basis of detection information of the sensor arrangement,'}wherein the calibrating structure is arranged outside the build space, andwherein the calibrating structure comprises at least one depression and/or elevation, andwherein the irradiation system is adapted to carry out irradiation of the calibrating structure in the region of the depression and/or elevation within the context of a calibration operation.16. The ...

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28-01-2021 дата публикации

LASER WELDING METHOD

Номер: US20210023651A1
Принадлежит:

A plurality of values measured are relatively compared to determine an optical axis deviation direction in which an optical axis of a measurement beam S deviates from a laser beam L. In performing laser welding in the optical axis deviation direction, an irradiation position of the measurement beam S is changed so that the irradiation position of the measurement beam S is moved to a rear side of the center of the optical axis of the laser beam L in the welding direction. 1. A laser welding method for welding a weld portion by using a laser beam , the method comprising:emitting, to the weld portion, the laser beam and a measurement beam coaxially aligned with the laser beam, the measurement beam having a wavelength different from a wavelength of the laser beam;measuring a penetration depth of the weld portion in accordance with the measurement beam reflected on the weld portion during the laser welding;determining an optical axis deviation direction in which an optical axis of the measurement beam deviates from the laser beam, by relatively comparing a plurality of values measured; andin performing the laser welding in the optical axis deviation direction, changing an irradiation position of the measurement beam so that the irradiation position of the measurement beam is moved to a rear side of a center of an optical axis of the laser beam, in a welding direction.2. The laser welding method of claim 1 , whereinin the measuring of the penetration depth of the weld portion, while performing laser welding, an irradiation position of the laser beam and the irradiation position of the measurement beam are moved in at least a first direction, a second direction opposite to the first direction, a third direction crossing the first direction, or a fourth direction opposite to the third direction.3. The laser welding method of claim 1 , whereinin the measuring of the penetration depth of the weld portion, laser welding is performed, by moving the irradiation position of the ...

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10-02-2022 дата публикации

Laser processing method, semiconductor device manufacturing method, and examination device

Номер: US20220044969A1
Принадлежит: Hamamatsu Photonics KK

An inspecting device includes a stage configured to support a wafer in which a plurality of rows of modified regions are formed in a semiconductor substrate, a light source configured to output light, an objective lens configured to pass light propagated through the semiconductor substrate, a light detection part configured to detect light passing through the objective lens, and an inspection part configured to inspect whether or not there is a tip of a fracture in an inspection region between a first modified region closest to a front surface of the semiconductor substrate and a second modified region closest to the first modified region. The objective lens aligns a focus from the back surface side in an inspection region. The light detection part detects light propagating in the semiconductor substrate from the front surface side to the back surface side.

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02-02-2017 дата публикации

ROOF LASER BRAZING SYSTEM

Номер: US20170028495A1
Принадлежит:

A roof laser brazing system comprises a side home position jig installed at each of opposite sides of the transferring path of the body in the brazing section, a roof-pressing jig detachably mounted on a handling robot, docked to the side home position jig, and that home-positions and presses the roof panel loaded on the opposite side panels, a brazing assembly mounted on at least one brazing robot in the side home position jig side and that brazes bonding portions between the opposite side panels and the roof panel using a laser as a heat source, and a grinding assembly mounted on the at least one grinding robot in the grinding section and that grinds brazing beads of the bonding portions between the opposite side panels and the roof panel. 1. A roof laser brazing system which includes a predetermined brazing section and a predetermined grinding section along a transferring path of a body for bonding a roof panel to opposite side panels based on the body including the opposite side panels , comprising:a side home position jig installed at each of opposite sides of the transferring path of the body in the brazing section, and that restricts and home-positions the opposite side panels of the body;a roof-pressing jig detachably mounted on a handling robot, docked to the side home position jig, and that home-positions and presses the roof panel loaded on the opposite side panels;a brazing assembly mounted on at least one brazing robot in the side home position jig side and that brazes bonding portions between the opposite side panels and the roof panel using a laser as a heat source; anda grinding assembly mounted on the at least one grinding robot in the grinding section and that grinds brazing beads of the bonding portions between the opposite side panels and the roof panel.2. The roof laser brazing system of claim 1 , further comprising a gap measurement unit installed to be movable forward or backward to the brazing assembly and that measures matching gaps between ...

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02-02-2017 дата публикации

Laser welder alignment system

Номер: US20170028506A1
Принадлежит: Abbott Cardiovascular Systems Inc

A laser welder alignment system includes a laser welder, a camera associated with the laser welder configured to capture images of a loaded product within the laser welder, and a controller in communicative association with the laser welder and the camera. The controller receives visualization data from the camera and, based on the visualization data, forms and sends positioning instructions to the laser welder instructing the laser welder so as to position the loaded product at a proper weld start. The laser welder alignment system also verifies proper positioning of the loaded product within the laser welder, and verifies proper rotation of the loaded component by determining whether the rotating product has a wobble that exceeds a pre-defined wobble tolerance.

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04-02-2016 дата публикации

Laser apparatus for welding

Номер: US20160031039A1
Автор: Kwang Min Oh
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A laser apparatus for welding is disclosed. The laser apparatus includes: a laser optic head adapted and configured to modify a spot size of a laser beam oscillated by a laser oscillator and to project the laser beam into a joining portion of joining members, wherein the laser optic head is adapted and configured to modify the spot size to selectively perform brazing or welding. A method of selectively brazing or welding according to one or more exemplary embodiments of the present invention includes: providing a laser apparatus of as described herein; and actuating the laser optic head to modify the spot size of the laser beam and project the laser beam into the joining portion of the joining members to selectively perform brazing or welding.

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04-02-2016 дата публикации

Laser cutting method and apparatus thereof

Номер: US20160031040A1
Принадлежит: Youngtek Electronics Corp

The present invention relates to a laser cutting method and apparatus thereof. The method comprises the following steps of fixing a substrate to be cut on a base, processing a first alignment procedure via an image sensor, forming a first cutting channel on a first surface of the substrate by cutting the first surface via laser beams, flipping over the substrate to be cut and fixing the substrate on the base, processing a second alignment procedure via the image sensor, and forming a second cutting channel on a second surface of the substrate by cutting the second surface via laser beams. The method can achieve improvement to laser cutting quality and effectiveness of enhancing production.

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02-02-2017 дата публикации

ABERRATION-CORRECTION METHOD, LASER PROCESSING METHOD USING SAID ABERRATION-CORRECTING METHOD, LASER IRRADIATION METHOD USING SAID ABERRATION-CORRECTING METHOD, ABERRATION-CORRECTING DEVICE AND ABERRATION-CORRECTING PROGRAM

Номер: US20170031158A1
Принадлежит:

In an aberration-correcting method according to an embodiment of the present invention, in an aberration-correcting method for a laser irradiation device which focuses a laser beam on the inside of a transparent medium , aberration of a laser beam is corrected so that a focal point of the laser beam is positioned within a range of aberration occurring inside the medium. This aberration range is not less than n×d and not more than n×d+Δs from an incidence plane of the medium , provided that the refractive index of the medium is defined as n, a depth from an incidence plane of the medium to the focus of the lens is defined as d, and aberration caused by the medium is defined as Δs. 110-. (canceled)11. A microscope for capturing an inside image of a sample , comprising:a light source configured to output illumination light,an illumination optical system including a spatial light modulator is configured to modulate the illumination light, and configured to irradiate an inside of a sample with the illumination light that is modulated by the spatial light modulator,a detection lens having an detection optical axis that intersects with an optical axis of the illumination optical system, anda light detector optically coupled to the detection lens and configured to capture an inside image of the sample.12. The microscope according to claim 11 , whereinthe illumination optical system includes a condenser lens optically coupled to the spatial light modulator.13. The microscope according to claim 12 , whereinthe condenser lens comprises an illumination objective lens.14. The microscope according to claim 12 , whereinthe illumination optical system includes relay lenses optically coupled to the spatial light modulator and the condenser lens.15. The microscope according to claim 12 , whereinthe spatial light modulator and an entrance pupil of the condenser lens are in an image forming relationship.16. The microscope according to claim 11 , whereinthe spatial light modulator ...

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31-01-2019 дата публикации

LASER MACHINING DEVICE AND LASER OUTPUT DEVICE

Номер: US20190030644A1
Принадлежит: HAMAMATSU PHOTONICS K.K.

A laser processing device includes: a device frame; a support unit attached to the device frame and configured to support an object to be processed; a laser output unit attached to the device frame; and a laser converging unit attached to the device frame so as to be movable with respect to the laser output unit. The laser output unit includes a laser light source configured to emit laser light, and the laser converging unit includes: a reflective spatial light modulator configured to reflect the laser light while modulating the laser light; a converging optical system configured to converge the laser light at the object to be processed; and an imaging optical system constituting a double telecentric optical system in which a reflective surface of the reflective spatial light modulator and an entrance pupil plane of the converging optical system are in an imaging relationship. 1: A laser processing device comprising:a device frame;a support unit attached to the device frame and configured to support an object to be processed;a laser output unit attached to the device frame; anda laser converging unit attached to the device frame so as to be movable with respect to the laser output unit, whereinthe laser output unit includes a laser light source configured to emit laser light, andthe laser converging unit includes:a reflective spatial light modulator configured to reflect the laser light while modulating the laser light;a converging optical system configured to converge the laser light at the object to be processed; andan imaging optical system constituting a double telecentric optical system in which a reflective surface of the reflective spatial light modulator and an entrance pupil plane of the converging optical system are in an imaging relationship.2: The laser processing device according to claim 1 , wherein an emission direction of the laser light from the laser output unit coincides with a moving direction of the laser converging unit.3: The laser processing ...

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30-01-2020 дата публикации

CONTROLLER

Номер: US20200030908A1
Автор: Nogami Takeshi
Принадлежит: FANUC Corporation

A controller that determines a welding condition depending on a work state includes a work state monitoring unit that monitors the work state at a welding position for future, a welding condition controlling unit that calculates a statistical value based on the work state at the welding position for future and past and determines the welding condition depending on the statistical value, and a welding unit that performs welding at a current welding position based on the welding condition. The controller enables appropriate control of welding condition switching. 1. A controller that determines a welding condition depending on a work state , the controller comprising:a work state monitoring unit that monitors the work state at a welding position for future;a welding condition controlling unit that calculates a statistical value based on the work state at the welding position for future and past and determines the welding condition depending on the statistical value; anda welding unit that performs welding at a current welding position based on the welding condition.2. The controller according to claim 1 ,wherein the welding condition controlling unit keeps the welding condition unchanged until the statistical value varies beyond a predetermined threshold after determining the welding condition.3. The controller according to claim 1 ,wherein the work state is a width between a plurality of workpieces to be welded, andthe statistical value is an average of the width between the workpieces. The present application claims priority to Japanese Application Number 2018-140441 filed Jul. 26, 2018, the disclosure of which is hereby incorporated by reference herein in its entirety.The present invention relates to a controller, and particularly, to a controller that enables appropriate control of welding condition switching.There is a technology allowing a controller to perform welding by controlling a robot that has a welding head and a sensor attached to the distal end of its ...

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05-02-2015 дата публикации

METHOD OF MONITORING A LASER BEAM AND LASER IRRADIATION APPARATUS USING THE SAME

Номер: US20150034614A1
Принадлежит: Samsung Display Co., Ltd.

A laser irradiation apparatus is provided. The laser irradiation apparatus includes a laser beam generator configured to generate laser beams; a slit unit configured to selectively transmit the laser beams; a mirror unit configured to change a path of the selectively transmitted laser beams, so as to irradiate the selectively transmitted laser beams onto a processing target; a first optical system, wherein a first portion of the selectively transmitted laser beams penetrates through the mirror unit and is projected to the first optical system; and a second optical system, wherein a second portion of the selectively transmitted laser beams penetrates through the mirror unit and is projected to the second optical system. 1. A laser irradiation apparatus comprising:a laser beam generator configured to generate laser beams;a slit unit configured to selectively transmit the laser beams;a mirror unit configured to change a path of the selectively transmitted laser beams, so as to irradiate the selectively transmitted laser beams onto a processing target;a first optical system, wherein a first portion of the selectively transmitted laser beams penetrates through the mirror unit and is projected to the first optical system; anda second optical system, wherein a second portion of the selectively transmitted laser beams penetrates through the mirror unit and is projected to the second optical system.2. The laser irradiation apparatus of claim 1 , wherein the first optical system has a first focal length and the second optical system has a second focal length.3. The laser irradiation apparatus of claim 2 , wherein the first focal length is configured such that the selectively transmitted laser beams located at the slit unit are projected to the first optical system claim 2 , and wherein the second focal length is configured such that the selectively transmitted laser beams irradiated onto and reflected from the processing target are projected to the second optical system.4. ...

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17-02-2022 дата публикации

In-situ mechanical property determination using smart optical monitoring during additive manufacturing

Номер: US20220050056A1
Принадлежит: Sensigma LLC

Mechanical properties of materials fabricated with additive manufacturing process are determined through optical monitoring in real time. A plasma generated in a zone where a laser interacts with deposited material is monitored using optical emission spectroscopy to generate one or more plasma spectral lines. The emission lines are analyzed to determine the hardness, micro-hardness, yield/residual stress, tensile strength, or other mechanical characteristics of the material. The composition may be an alloy such as an aluminum-magnesium alloy, including 7000 series aluminum alloys. The mechanical property may be derived from a change in a ratio of the plasma spectral lines, including a change in a ratio of ionic and neutral magnesium (Mg) associated with a 7000 series aluminum alloy. The apparatus and methods are extendable to other alloys and compositions.

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04-02-2021 дата публикации

LASER WELDING METHOD, AND LASER WELDING DEVICE

Номер: US20210031298A1
Принадлежит:

A plurality of values measured are relatively compared to determine an optical axis deviation direction in which an optical axis of a measurement beam deviates from a laser beam. Then, a first parallel plate and a second parallel plate are rotated to move an irradiation position of the measurement beam so that an optical axis of the measurement beam is substantially coaxial with an optical axis of the laser beam. 1. A laser welding method for welding a weld portion by using a laser beam , the method comprising:emitting, to the weld portion, the laser beam and a measurement beam coaxially aligned with the laser beam, the measurement beam having a wavelength different from a wavelength of the laser beam;measuring a penetration depth of the weld portion in accordance with the measurement beam reflected on the weld portion during the laser welding;determining an optical axis deviation direction in which an optical axis of the measurement beam deviates from the laser beam, by relatively comparing a plurality of values measured; andcorrecting an irradiation position of the measurement beam so that the irradiation position moves into a predetermined area centered at an optical axis of the laser beam.2. The laser welding method of claim 1 , whereinin the correcting of the irradiation position of the measurement beam, the irradiation position of the measurement beam is corrected so as to move to a rear side, in a welding direction, of a center of the optical axis of the laser beam.3. The laser welding method of claim 1 , whereinin the correcting of the irradiation position, a parallel plate arranged on an optical path of the measurement beam is rotated to correct the irradiation position of the measurement beam.4. The laser welding method of claim 1 , further comprising:adjusting the irradiation position of the measurement beam during the laser welding so that the irradiation position of the measurement beam moves around a rotation center that moves on a predetermined ...

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30-01-2020 дата публикации

LASER-BASED MEASUREMENT DEVICE AND MOVABLE PLATFORM

Номер: US20200033120A1
Автор: Huang Huai, Ren Wei, WANG Peng
Принадлежит:

A laser-based measurement device includes a motor comprising a hollow shaft. The laser-based measurement device also includes a laser transmitter disposed in the hollow shaft. The laser-based measurement device also includes an optical device disposed at the motor. The motor is configured to drive the optical device to rotate. The optical device is configured to guide a laser beam transmitted by the laser transmitter out of the hollow shaft, or to guide the laser beam reflected by an external environment into the hollow shaft. 1. A laser-based measurement device , comprising:a motor comprising a hollow shaft;a laser transmitter disposed in the hollow shaft; andan optical device disposed at the motor,wherein the motor is configured to drive the optical device to rotate, andwherein the optical device is configured to guide a laser beam transmitted by the laser transmitter out of the hollow shaft, or to guide the laser beam reflected by an external environment into the hollow shaft.2. The laser-based measurement device of claim 1 , wherein the optical device comprises at least one of a reflective device configured to reflect the laser beam or a refractive device configured to refract the laser beam.3. The laser-based measurement device of claim 1 , wherein the motor comprises an external rotor motor or an internal rotor motor.4. The laser-based measurement device of claim 1 , wherein the optical device is disposed in the hollow shaft or outside of the hollow shaft.5. The laser-based measurement device of claim 1 , further comprising a laser receiver configured to receive the laser beam guided by the optical device into the hollow shaft.6. The laser-based measurement device of claim 5 , further comprising:a converging lens disposed in the hollow shaft, the converging lens configured to focus the laser beam guided by the optical device into the hollow shaft onto the laser receiver.7. The laser-based measurement device of claim 6 , further comprising:a mounting member ...

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17-02-2022 дата публикации

SYSTEM FOR LASER BONDING OF FLIP CHIP

Номер: US20220052019A1
Автор: AHN GEUNSIK, Ko Youn Sung
Принадлежит: PROTEC CO., LTD.

A system for laser bonding of flip chip, and more particularly, to a system for laser bonding of flip chip for bonding a flip chip-type semiconductor chip to a substrate by using a laser beam is provided. According to the system for laser bonding of flip chip of the present disclosure, by performing laser bonding on a substrate while pressurizing semiconductor chips, even semiconductor chips which are bent or likely to bend may be bonded to the substrate without causing poor contact of solder bumps. 1. A system for laser bonding of flip chip comprising:a supply unit configured to supply a substrate, on which a plurality of semiconductor chips to be bonded to an upper surface of the substrate are arranged;a fixing unit configured to receive the substrate from the supply unit and fix a lower surface of the substrate;a laser unit comprising a laser head for bonding the semiconductor chips to the substrate by irradiating a laser beam to the substrate fixed to the fixing unit and a laser transporting portion transporting the laser head;a mask comprising a transmitting portion configured to transmit through a laser beam irradiated from the laser head of the laser unit and transmit through infrared rays including a wavelength band from about 3 μm or more to about 9 μm or less;a mask holding unit configured to hold the mask above the fixing unit;a pressurizing unit configured to lift one of the mask holding unit and the fixing unit relative to the other such that the transmitting portion of the mask pressurizes a plurality of semiconductor chips of the substrate fixed to the fixing unit;a discharging unit configured to receive the substrate from the fixing unit and discharge the substrate;an infrared camera configured to capture an image of the semiconductor chips to which a laser beam is irradiated by the laser head of the laser unit; anda controller configured to control operation of the supply unit, the fixing unit, and the discharging unit, and control operation of the ...

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05-02-2015 дата публикации

METHOD AND SYSTEM FOR LASER FOCUS PLANE DETERMINATION IN A LASER SCRIBING PROCESS

Номер: US20150037915A1
Принадлежит:

In embodiments, a method of laser scribing a mask disposed over a semiconductor wafer includes determining a height of the semiconductor over which a mask layer is disposed prior to laser scribing the mask layer. In one embodiment the method includes: determining a height of the semiconductor wafer under the mask in a dicing street using an optical sensor and patterning the mask with a laser scribing process. The laser scribing process focuses a scribing laser beam at a plane corresponding to the determined height of the semiconductor wafer in the dicing street. Examples of determining the height of the semiconductor wafer can include directing a laser beam to the dicing street of the semiconductor wafer, which is transmitted through the mask and reflected from the wafer, and identifying an image on a surface of the wafer under the mask with a camera. 1. A method of laser scribing a mask disposed over a semiconductor wafer , the method comprising:determining a height of the semiconductor wafer under the mask in a dicing street using an optical sensor; andpatterning the mask with a laser scribing process, the laser scribing process to focus a scribing laser beam at a plane corresponding to the determined height of the semiconductor wafer in the dicing street.2. The method of claim 1 , wherein determining the height of the semiconductor wafer under the mask in the dicing street using the optical sensor comprises:directing a laser beam to the dicing street of the semiconductor wafer, the laser beam to be transmitted through the mask and reflect from a layer disposed under the mask;detecting, with the optical sensor, a height of the layer disposed under the mask based on the reflected laser beam; anddetermining the height of the semiconductor wafer based on the detected height of the layer disposed under the mask.3. The method of claim 1 , wherein determining the height of the semiconductor wafer under the mask in the dicing street using the optical sensor comprises: ...

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09-02-2017 дата публикации

DEVICE FOR CUTTING A WEB OF MATERIAL

Номер: US20170035618A1
Принадлежит:

A device for cutting a web of material comprises movement means for moving a web of material to be cut, defining a feed path for the web at least partly rotatable about a central axis and equipped with at least one conveyor mounted around the central axis, at least one cutting head equipped with a laser source and an optical system configured to direct the laser beam towards a cutting zone, where the optical system of the cutting head comprises at least one directing member located inside the conveyor to direct the laser beam away from the central axis towards the cutting zone. 1. A device for cutting a web of material , comprising:movement means by which a web of material to be cut is made to advance and defining for the web a feed path which is at least partly rotatable about a central axis; the movement means comprising at least a conveyor mounted around the central axis and defining an at least partly curved cutting zone;at least one laser cutting head laser equipped with a laser source configured to generate a laser beam, and an optical system configured to direct the laser beam towards the cutting zone;Wherein the optical system of the cutting head comprises at least one directing member located inside the conveyor to direct the laser beam away from the central axis towards the cutting zone; the directing member being rotatable about its axis of rotation and oriented in such a way that the laser beam defines on the web a cutting line transversal to the feed path of the web.2. The device according to claim 1 , wherein the conveyor constitutes a curved feed surface for the web and is equipped claim 1 , at the cutting zone claim 1 , with at least one permeable portion permeable to the laser beam and facing the directing member claim 1 , so as to allow the laser beam to pass through the feed surface.3. The device according to claim 2 , wherein the permeable portion is defined by a through opening.4. The device according to claim 2 , wherein the permeable portion ...

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11-02-2016 дата публикации

Methods and Systems for Characterizing Laser Machining Properties by Measuring Keyhole Dynamics Using Interferometry

Номер: US20160039045A1
Автор: Webster Paul J.L.
Принадлежит:

A method, apparatus, and system are provided to monitor and characterize the dynamics of a phase change region (PCR) created during laser welding, specifically keyhole welding, and other material modification processes, using low-coherence interferometry. By directing a measurement beam to multiple locations within and overlapping with the PCR, the system, apparatus, and method are used to determine, in real time, spatial and temporal characteristics of the weld such as keyhole depth, length, width, shape and whether the keyhole is unstable, closes or collapses. This information is important in determining the quality and material properties of a completed finished weld. It can also be used with feedback to modify the material modification process in real time. 1. An apparatus comprising:an imaging optical source that produces imaging light that is applied to a material processing system, wherein the material processing system implements a material modification process and creates a phase change region (PCR) in a material;at least one element that directs the imaging light at a plurality of imaging beam positions proximate the PCR;at least one input-output port that outputs a first component of the imaging light to an optical access port of the material processing system and that receives a reflection component of the imaging light;an optical combiner that combines the reflection component and at least another component of the imaging light to produce an interferometry output, the interferometry output based on a path length taken by the first component and the reflection component compared to a path length taken by the at least another component of the imaging light; andan interferometry output processor that processes the interferometry output to determine at least one characteristic of the PCR.2. The apparatus of claim 1 , further comprising a material processing beam source that produces a material processing beam that is applied to the material in the material ...

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09-02-2017 дата публикации

WELDED STRUCTURE, LASER WELDING METHOD, AND LASER WELDING DEVICE

Номер: US20170036302A1
Принадлежит:

A nozzle as a welded structure includes a nozzle body, and a buckling prevention fin joined to the nozzle body by laser welding, in which an end of the buckling prevention fin before laser welding is disposed to face the nozzle body, an installed state of the nozzle body and the buckling prevention fin includes an installed state in which a gap is formed between the nozzle body and the buckling prevention fin, and the buckling prevention fin has a beveled portion which is beveled at the end facing the nozzle body. 1. A welded structure comprising:a workpiece; anda fin member joined to the workpiece by laser welding,wherein an end of the fin member before laser welding is disposed to face the workpiece, and an installed state of the workpiece and the fin member includes an installed state in which a gap is formed between the workpiece and the fin member, andthe fin member has a beveled portion which is beveled at the end facing the workpiece.2. The welded structure according to claim 1 ,wherein the fin member has a front side, a back side formed on an opposite side of the front side, an end surface of the end facing the workpiece, and a beveled surface of the beveled portion beveled at the end portion,a space area formed between the workpiece and the fin member is an area, in a cross-section perpendicular to the traveling direction of the laser welding, that is surrounded by a welding target surface of the workpiece facing the fin member, the end surface facing the welding target surface of the workpiece, the beveled surface of the beveled portion, a front side virtual surface extending to the workpiece side along the front side of the fin member, and a back side virtual surface extending to the workpiece side along the back side of the fin member, andwhen a maximum space area in which the space area becomes the maximum is set as Emax, and a minimum space area in which the space area becomes the minimum is set as Emin, the beveled portion is beveled to satisfy the ...

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04-02-2021 дата публикации

LASER PROCESSING APPARATUS

Номер: US20210035826A1
Автор: Nakamura Masaru
Принадлежит:

A control unit of a laser processing apparatus includes: a reference image storage section that images streets before formation of modified layers by an imaging unit and stores the captured image as a reference image; a calculation section that compares the reference image stored in the reference image storage section with an image of a wafer held by a chuck table that is captured by the imaging unit, and calculates the degree of agreement of the two images; and a decision section that decides whether the wafer is an unprocessed wafer not formed with the modified layers in the case where the degree of agreement calculated by the calculation section is more than a first predetermined value, and decides whether the wafer is a processed wafer formed with the modified layers in the case where the degree of agreement is equal to or less than a second predetermined value. 1. A laser processing apparatus for subjecting a wafer to laser processing , the wafer being formed on a front surface thereof with a plurality of devices in a state of being partitioned by a plurality of intersecting streets , the laser processing apparatus comprising:a chuck table that holds the wafer;a laser beam applying unit that applies a laser beam of such a wavelength as to be transmitted through the wafer to the wafer held by the chuck table, with a focal point of the laser beam positioned inside the wafer along the streets, to form modified layers to be start points of division;a feeding mechanism that performs relative processing feed of the chuck table and the laser beam applying unit;an imaging unit that images the wafer in a manner of transmission through the wafer; anda control unit, a reference image storage section that images the streets before formation of the modified layers by the imaging unit and stores an obtained image as a reference image,', 'a calculation section that compares the reference image stored in the reference image storage section with an image of the wafer held by ...

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24-02-2022 дата публикации

METHOD OF PROCESSING AN OBJECT WITH A LIGHT BEAM, AND PROCESSING SYSTEM

Номер: US20220055146A1
Автор: GABILONDO Jose Juan
Принадлежит:

A method of processing an object with a light beam includes the following steps: 1. A method of processing an object with a light beam , the method including the following steps:projecting a light beam onto an object using a first scanner for processing the object, said light beam projecting a light spot on the object for producing a heated area by locally heating the object;displacing the heated area along a track on the object;capturing images of a first portion of the object with a first camera, using the first scanner; andcapturing images of a second portion of the object with a second camera, using a second scanner;wherein the method further includes the step of operating the first scanner and the second scanner so that the first camera captures images of the heated area, whereas the second camera captures images of portions of the object trailing behind the heated area and/or ahead of the heated area.2. The method according to claim 1 , further including the step of repetitively scanning the light beam in two dimensions with the first scanner so that the light beam follows a two-dimensional scanning pattern and establishes an effective spot having a two-dimensional energy distribution determined by at least the scanning pattern followed by the light beam claim 1 , a scanning speed and a light beam power claim 1 , and wherein the two-dimensional energy distribution is dynamically adapted while the heated area is displaced along the track.3. The method according to claim 1 , wherein the first scanner is used to displace the heated area along the track and wherein the first scanner and the second scanner are operated in synchronization so that the second camera captures images of the object having a pre-determined spatial and/or temporal relation to the heated area.4. The method according to claim 1 , further comprising the step of repetitively scanning in two dimensions with the second scanner and operating the second camera in synchronization with the second ...

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24-02-2022 дата публикации

LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD

Номер: US20220055147A1
Принадлежит:

A laser processing apparatus includes a laser oscillator that oscillates processing laser light to be incident on a processing point on a processing surface of a workpiece, a coupling mirror that deflects or transmits the processing laser light and measurement light to be incident on the processing point toward the processing point, a measurement light deflection unit that changes an incident angle of the measurement light on the coupling mirror, a lens that concentrates the processing laser light and the measurement light on the processing point, a controller that controls the laser oscillator and the measurement light deflection unit, a measurement processor that measures a depth of a keyhole generated at the processing point by the processing laser light by using an optical interference signal based on an interference generated by an optical path difference between the measurement light reflected at the processing point and reference light, and a beam position measurement unit that measures positions of the processing laser light and the measurement light. 1. A laser processing apparatus comprising:a laser oscillator configured to oscillate processing laser light to be incident on a processing point on a processing surface of a workpiece;a coupling mirror configured to deflect or transmit the processing laser light and measurement light to be incident on the processing point toward the processing point;a measurement light deflection unit configured to change an incident angle of the measurement light on the coupling mirror;a lens configured to concentrate the processing laser light and the measurement light on the processing point;a controller configured to control the laser oscillator and the measurement light deflection unit;a measurement processor configured to measure a depth of a keyhole generated at the processing point by the processing laser light by using an optical interference signal based on an interference generated by an optical path difference ...

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24-02-2022 дата публикации

WELDING WINDOW DEVICE

Номер: US20220055148A1
Принадлежит:

A welding window device includes an elongated body that defines a welding cavity that extends through the body from a top side to a bottom side. The welding cavity is framed by an inlet end, an outlet end, and lateral sides of the body. The body includes one or more gas channels inwardly extending through one or more of the first lateral side or the second lateral side from an inlet opening in the inlet end toward the outlet end of the body. The gas channels include nozzle openings inwardly oriented toward the welding cavity. The gas channels are positioned in the body to direct a gas into the welding cavity during welding of other bodies together within the welding cavity. 1. A welding window device comprising:an elongated body extending from an inlet end to an opposite outlet end in a first direction, extending from a first lateral side to an opposite, second lateral side in a second direction that is transverse to the first direction, and extending from a bottom side to an opposite top side in a third direction that is transverse to the first direction and the second direction,the body defining a welding cavity that extends through the body from the top side to the bottom side, the welding cavity framed by the inlet end, the outlet end, the first lateral side, and the second lateral side,the body including one or more gas channels inwardly extending through one or more of the first lateral side or the second lateral side from an inlet opening in the inlet end toward the outlet end of the body, the one or more gas channels including nozzle openings inwardly oriented toward the welding cavity,the one or more gas channels positioned in the body to direct a gas into the welding cavity during welding of other bodies together within the welding cavity.2. The welding window device of claim 1 , wherein the body includes one or more drain outlets extending from the welding cavity through the outlet end of the body.3. The welding window device of claim 1 , wherein the one ...

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07-02-2019 дата публикации

Machining Metal Removal Control

Номер: US20190039171A1
Принадлежит: Designers Edge Inc.

A process is disclosed for controlling the length of chips or shavings on materials that is inherent to produce long undesired chips when machined. Based on the work piece configuration and surface area to machine a determined outlay and process application for a continuous scribe or arrangements of different scribe pattern or patterns for the part and or surface is selected to provide optimal chip control during the machining operation. Engineered Interruptions are applied to the work object prior to the machining operation to maximize optimal chip control. Controlling the depth of scribe of the laser is accomplished and managed through the interface of hardware, software and electronics. 1. A method of machining a work piece , comprising:emitting an energy beam onto a to piece to form a first cut in a spiral orientation along the work piece and having a defined space between adjacent spinal sections of the first cut;measuring a real-time cutting depth of the energy beam;generating a feedback signal representing the real-time cuffing depth; andmaking a second cut on the work piece with a cutting tool, the second out removing material from the work piece, the second cut being adjacent to where the first cut in the surface of the work piece was made by the energy beam, controlling the depth of the first cut made by the energy earn by adjusting, the position of the energy beam with respect to the work piece or adjusting the power supplied to the energy beam in response to the feedback signal, the depth of the first cut being from about 40% to about 60% of the depth of the second cut that remove material from the work piece, creating interruptions in the work piece with the first cut, the interruptions causing the material removed from the work piece by the cutting tool to break into pieces of a desired length, size of the defined space determining the desired length of the pieces.2. The method of in which adjusting the depth of the groove is accomplished by changing ...

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07-02-2019 дата публикации

LASER CLEARANCE OF COATING

Номер: US20190039177A1
Принадлежит:

Aspects of the disclosure are directed to processing a component. A first coating is removed from a substrate of the component, the substrate including a first hole. Subsequent to removing the first coating from the substrate, a second coating is applied to the substrate, where a portion of the second coating at least partially blocks the first hole. Subsequent to applying the second coating to the substrate, the portion of the second coating is removed to generate a second hole through the second coating. The removal of the portion of the second coating creates a bore in the second coating that provides a clearance from an edge of the first hole on a surface of the substrate that interfaces to the second coating. 1. A method for processing a component , comprising:removing a first coating from a substrate of the component, the substrate including a first hole;subsequent to removing the first coating from the substrate, applying a second coating to the substrate, wherein a portion of the second coating at least partially blocks the first hole; andsubsequent to applying the second coating to the substrate, removing the portion of the second coating to generate a second hole through the second coating,wherein the removal of the portion of the second coating creates a bore in the second coating that provides a clearance from an edge of the first hole on a surface of the substrate that interfaces to the second coating.2. The method of claim 1 , wherein the bore has a first thickness and the second coating has a second thickness.3. The method of claim 2 , wherein the first thickness is substantially equal to the second thickness.4. The method of claim 1 , wherein the first hole has a first dimension claim 1 , and wherein the bore has a second dimension.5. The method of claim 4 , wherein the second dimension is a value within a range of 50-100% of the first dimension.6. The method of claim 5 , wherein the first dimension is a diameter of the first hole claim 5 , and ...

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07-02-2019 дата публикации

METHOD AND DEVICE FOR MANUFACTURING MEMBER HAVING A THROUGH HOLE

Номер: US20190039178A1
Принадлежит:

A method for manufacturing a member having a through hole includes a primary formation step, an intensity determination step, a laser modulation step, and a secondary formation step. The primary formation step includes radiating a laser beam to a workpiece member to form a pilot hole having a smaller inner diameter than the through hole while receiving light from the workpiece member at a light detection unit. The intensity determination step includes determining whether a light intensity is equal to or less than a predetermined threshold value. The laser modulation step includes modulating a spatial light phase of the laser beam the intensity of the light is equal to or less than the predetermined threshold value. The secondary formation step includes radiating the laser beam having the modulated spatial light phase to a peripheral part of the pilot hole to form the through hole. 1. A method for manufacturing a member having a through hole , the method comprising:a primary formation step of radiating a laser beam to a workpiece member to form, on the workpiece member, a pilot hole having a smaller inner diameter than the through hole while receiving light from the workpiece member by a light detection unit;an intensity determination step of determining whether an intensity of light detected by the light detection unit is equal to or less than a predetermined threshold value;a laser modulation step of modulating a spatial light phase of the laser beam that is radiated onto the workpiece member in response to determining that the intensity of the light detected by the light detection unit is equal to or less than the predetermined threshold value; anda secondary formation step of radiating the laser beam having the modulated spatial light phase to an edge part of the pilot hole to form the through hole.2. The method for manufacturing a member according to claim 1 , wherein in the laser modulation step claim 1 , the spatial light phase of the laser beam is modulated ...

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07-02-2019 дата публикации

CONTINUOUS ADDITIVE MANUFACTURE OF HIGH PRESSURE TURBINE

Номер: US20190039182A1
Принадлежит:

A method of manufacturing an object by additive manufacturing is provided. The method includes lowering a build platform having a given layer of build material to powder provided on a window. The powder is irradiated to form a subsequent layer that corresponds to the given layer. The method then includes solidifying the subsequent layer, and raising the build platform and the subsequent layer away from the window. The steps are repeated until the desired object is formed. 1. A method of manufacturing an object by additive manufacturing , comprising:(a) lowering a build platform having a given layer of build material to powder provided on a window;(b) irradiating the powder to form a subsequent layer corresponding to the given layer;(c) solidifying the subsequent layer;(d) raising the build platform and the solidified subsequent layer away from the window; and(e) repeating steps (a)-(d) until the object is formed.2. The method of claim 1 , wherein the irradiation is digital light processing claim 1 , laser claim 1 , or e-beam irradiation.3. The method of claim 1 , wherein the powder has a lower melting point than the window.4. The method of claim 1 , wherein the powder is irradiated through the window but adheres to the build platform positioned above the window.5. The method of claim 1 , wherein the powder is a cobalt chrome alloy claim 1 , stainless steel alloy claim 1 , aluminum alloy claim 1 , titanium alloy or nickel based superalloy.6. The method of claim 1 , wherein the object is a turbine blade or stator vane.7. The method of claim 1 , wherein the object is a tip portion of a turbine blade or stator vane.8. An apparatus for additive manufacturing an object claim 1 , comprising:a powder dispenser;a window;a platform on which the object is built;a recoater providing layers of powder over the window; andan irradiation source positioned below the window.9. The apparatus of claim 8 , wherein the irradiation source is a laser or a digital light projector.10. The ...

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07-02-2019 дата публикации

Three-Dimensional Shaping Method

Номер: US20190039287A1
Принадлежит:

A three-dimensional shaping method utilizing a powder layer forming step, and a sintering step with a laser beam or electron beam, the method including the steps of a) measuring the reflection intensity of the beam irradiated in each sintering step, or the reflection intensity of other light, b) commanding to continue sintering within the next time unit, or when the next powder layer forming step is given, when it has been detected that the reflection intensity of the step a) is within a standard range for a given time unit, and, c) judging that a sintering defect has been produced, and commanding to cancel sintering in the next time unit, or when the next powder layer forming step is given, when it is detected that a condition has occurred in which the reflection intensity of step a) deviates from the standard range for a given time unit. 2. A three-dimensional shaping method according to claim 1 , further comprising the steps of:selecting among the spectral images of the step d, the sintering region in which the sintering defect that resulted in commanding in the step c has occurred, and one sintering region among subsequent sintering regions, andif the peak value difference for a specific frequency in both spectral images is within a prescribed numerical range previously set as a standard, judging and displaying that the cause of the sintering defect that resulted in commanding in the step c is a problem with the control system relating to the beam, andif the difference deviates from a prescribed numerical range previously set as a standard, judging and displaying that the cause of the sintering defect is a problem with the powder layer surface.3. A three-dimensional shaping method that includes lamination comprising the steps of:alternatively repeating a powder layer forming step and a sintering step in which the powder layer is sintered by irradiation of one of a moving laser beam and electron beam, and wherein the following process is adopted during the ...

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07-02-2019 дата публикации

SYSTEMS AND METHODS FOR MEASURING RADIATED THERMAL ENERGY DURING AN ADDITIVE MANUFACTURING OPERATION

Номер: US20190039318A1
Принадлежит: Sigma Labs, Inc.

This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensor; determining an area of the build plane traversed during the scans; determining a thermal energy density for the area of the build plane traversed by the scans based upon the amount of energy radiated and the area of the build plane traversed by the scans; mapping the thermal energy density to one or more location of the build plane; determining that the thermal energy density is characterized by a density outside a range of density values; and thereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane. 1. An additive manufacturing method , comprising:generating a plurality of scans of an energy source across a build plane;measuring an amount of energy radiated from the build plane during each of the plurality of scans using an optical sensor monitoring the build plane;determining an area of the build plane traversed during the plurality of scans;determining a thermal energy density for the area of the build plane traversed by the plurality of scans based upon the amount of energy radiated and the area of the build plane traversed by the plurality of scans;mapping the thermal energy density to one or more location of the build plane;determining that the thermal energy density is characterized by a density outside a range of density values; andthereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane.2. The additive manufacturing method of wherein the measuring an amount of energy comprises receiving sensor readings from the optical sensor.3. The additive manufacturing method of wherein ...

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06-02-2020 дата публикации

APPARATUS AND METHOD FOR ADDITIVE MANUFACTURING

Номер: US20200038954A1
Принадлежит:

The invention relates to a device () for an additive manufacture. The device () comprises a laser device () for machining material using a laser beam (), said laser device () being designed to deflect the laser beam () onto a machining region of a workpiece (); at least one supply device () for a supply material, said supply device being designed to supply the supply material to the machining region; and an interferometer () which is designed to measure a distance to the workpiece () by means of an optical measuring beam (). 1100. An apparatus () for additive manufacturing , comprising{'b': 110', '112', '110', '112', '10, 'a laser apparatus () for material processing by means of a laser beam (), wherein the laser apparatus () is configured to steer the laser beam () onto a processing region of a workpiece ();'}{'b': '130', 'at least one supply apparatus () for a supply material, configured to supply the supply material to the processing region; and'}{'b': 140', '10', '142, 'an interferometer unit with an interferometer (), configured to measure a distance to a surface of the workpiece () by means of at least one optical measurement beam ().'}21001212121010. The apparatus () as claimed in claim 1 , wherein the interferometer unit is configured to determine claim 1 , by means of the distance measurement at least one physical variable from the group comprising a size of a produced welding bead () claim 1 , a height of a produced welding bead () claim 1 , a position of a produced welding bead () claim 1 , a position of the surface of the workpiece () and a topography of the surface of the workpiece ().310010. The apparatus () as claimed in or claim 1 , wherein the interferometer unit is configured to measure a distance to the processing region and/or a distance to a region of the workpiece () that lies adjacent to the processing region.4100100112. The apparatus () as claimed in any one of the preceding claims claim 1 , wherein the apparatus () further comprises ...

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06-02-2020 дата публикации

ROOF LASER BRAZING SYSTEM

Номер: US20200038981A1
Принадлежит:

A roof laser brazing system comprises a side home position jig installed at each of opposite sides of the transferring path of the body in the brazing section, a roof-pressing jig detachably mounted on a handling robot, docked to the side home position jig, and that home-positions and presses the roof panel loaded on the opposite side panels, a brazing assembly mounted on at least one brazing robot in the side home position jig side and that brazes bonding portions between the opposite side panels and the roof panel using a laser as a heat source, and a grinding assembly mounted on the at least one grinding robot in the grinding section and that grinds brazing beads of the bonding portions between the opposite side panels and the roof panel. 1. A roof laser brazing system which laser-brazes a roof panel to opposite side panels based on a body including the opposite side panels , comprising:a side home position jig installed at each of opposite sides of a transferring path of the body in a brazing section set along the transferring path of the body and that restricts the opposite side panels of the body;a roof-pressing jig detachably mounted on a handling robot, that is docked to the side home position jig, and that home-positions and presses the roof panel loaded on the opposite side panels;a brazing assembly mounted on at least one brazing robot in the side home position jig side and that brazes bonding portions between the opposite side panels and the roof panel using a laser as a heat source;a gap measurement unit mounted on the brazing assembly and that measures matching gaps between the roof panel and the opposite side panels that are pressed by the roof-pressing jig; anda grinding assembly mounted on at least one grinding robot in a grinding section set along the transferring path of the body and that grinds brazing beads of the bonding portions between the opposite side panels and the roof panel,wherein the brazing assembly includes:a brazing bracket mounted ...

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06-02-2020 дата публикации

METHOD FOR IDENTIFYING JOINING POINTS OF WORKPIECES AND LASER MACHINING HEAD COMPRISING A DEVICE FOR CARRYING OUT THIS METHOD

Номер: US20200038993A1
Принадлежит: PRECITEC GMBH & CO. KG

A method is provided for identifying joining positions of workpieces. A laser machining head includes a housing through which a work laser beam path is guided. A device for carrying out the method for identifying joining positions of workpieces includes: a camera for capturing images of a joint of workpieces, the viewing beam path of which is coupled coaxially into the work laser beam path; and an illumination device, the illumination beam path of which is coupled coaxially into the viewing beam path and into the work laser beam path. In the method, images of a joint are captured by a camera, and from the images of the joint measurement data for the joining positions is determined. The measurement data is associated with the course of the joint. A model of the course of the joint is determined from a part of the measurement data, the model providing a measurement curve which is output for controlling a joining process and/or for determining additional quality characteristics. 1. A method for identifying joining positions of workpieces prior to welding , wherein:images of a joint are captured by means of a camera; andmeasurement data for the joining positions associated with the course of the joint are determined from the images of the joint,a model of the joint course fitted to the original measurement data being determined from a part of the measurement data, the model being output as a measurement curve for controlling a joining process and/or for determining further quality characteristics.2. The method according to claim 1 , wherein the workpieces are illuminated coaxially to a viewing beam path of the camera.3. The method according to claim 1 , wherein the viewing beam path of the camera for capturing the images of the joint is coaxially coupled into a working laser beam path.4. The method according to claim 1 , wherein measurement data are removed component-dependently from the measurement data associated with the course of the joint claim 1 , and that the ...

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06-02-2020 дата публикации

CONTROL DEVICE FOR LASER MACHINING APPARATUS, AND LASER MACHINING APPARATUS

Номер: US20200038999A1
Автор: MOCHIDA Takeshi
Принадлежит: FANUC Corporation

A control device for a laser machining apparatus includes: a plurality of lasers, and a plurality of scanners which respectively scan laser beams outputted from the plurality of lasers, and a scanner control unit which controls the plurality of scanners, in which the scanner control unit synchronously controls the plurality of scanners by generating information indicating a movement amount of a focal point or center of a laser beam based on a machining program, and controlling the plurality of scanners based on the information indicating the movement amount of the focal point or center of the laser. 1. A control device for a laser machining apparatus including a plurality of lasers and a plurality of scanners which respectively scan laser beams emitted from the plurality of lasers , the control device comprising:a scanner control unit which controls the plurality of scanners,wherein the scanner control unit synchronously controls the plurality of scanners by generating information indicating a movement amount of a focal point or center of a laser beam based on a machining program, and controlling the plurality of scanners based on the information indicating the movement amount of the focal point or center of the laser beam.2. The control device for a laser machining apparatus according to claim 1 , wherein the information indicating the movement amount of the focal point or center of the laser beam is a movement amount for every predetermined period of the focal point or center of the laser beam.3. The control device for a laser machining apparatus according to claim 1 , wherein the information indicating the movement amount of the focal point or center of the laser beam is a coordinate for every predetermined period of the focal point or center of the laser beam.4. The control device for a laser machining apparatus according to claim 2 , wherein the scanner control unit includes a plurality of systems which respectively control the plurality of scanners claim 2 , a ...

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06-02-2020 дата публикации

Laser Machining Systems and Methods with Vision Correction and/or Tracking

Номер: US20200039002A1
Принадлежит:

Vision correction and tracking systems may be used in laser machining systems and methods to improve the accuracy of the machining. The laser machining systems and methods may be used to scribe one or more lines in large flat workpieces such as solar panels. In particular, laser machining systems and methods may be used to scribe lines in thin film photovoltaic (PV) solar panels with accuracy, high speed and reduced cost. The vision correction and/or tracking systems may be used to provide scribe line alignment and uniformity based on detected parameters of the scribe lines and/or changes in the workpiece. 1. A laser machining system comprising:a part handling system including a workpiece support surface for supporting a workpiece to be machined;at least one laser source for generating at least one processing laser beam;an optical head including a beam delivery system for receiving the at least one processing laser beam and for directing the processing laser beam at the workpiece; anda workpiece tracking system for tracking changes in the workpiece as the processing laser beam moves relative to the workpiece and for adjusting at least one parameter of the processing laser beam in response to the changes in the workpiece, wherein the workpiece tracking system includes at least a laser interferometer sensor for measuring a processing distance to the workpiece.2. The laser machining system of wherein the at least one laser interferometer sensor measures a processing distance to at least one surface of the workpiece claim 1 , and wherein the workpiece tracking system tracks changes in the processing distance to the surface of the workpiece.3. The laser machining system of wherein the at least one laser interferometer sensor measures a processing distance to a process plane of the workpiece and wherein the workpiece tracking system tracks changes in the processing distance to the process plane of the workpiece.4. The laser machining system of wherein the process plane of ...

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18-02-2021 дата публикации

Systems and methods for laser trimming dental aligners

Номер: US20210045854A1
Принадлежит: SmileDirectClub LLC

A system includes an orientation determination system comprising a camera where the camera is configured to capture an image of an orientation feature of a physical dental model of a dental arch of a customer with material thermoformed thereon. The orientation determination system is configured to identify an offset of the physical dental model with respect to a fixture plate during positioning or before or after the physical dental model is positioned on the fixture plate by determining an actual orientation of the physical dental model based on the orientation feature. The system also includes a laser trimming system configured to cut the material along a trim line based on the identified offset while the fixture plate is moved about at least two axes to produce a dental aligner specific to the customer and being configured to reposition one or more teeth of the customer.

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18-02-2021 дата публикации

PHOTODETECTOR ARRAY FOR ADDITIVE MANUFACTURING OPERATIONS

Номер: US20210046546A1
Принадлежит: Sigma Labs, Inc.

This disclosure describes an additive manufacturing system that includes a build plane having a first region and a second region. Multiple energy source can be positioned above the build plane and configured to direct energy into the first and second regions of the build plane. The system includes optical sensors configured to monitor an intensity of light emitted from the energy sources. A processor associated with the additive manufacturing system is configured to adjust the sensor outputs in response to the energy sources coming into close proximity. 1. An additive manufacturing method , comprising:a build plane having a first region and a second region at least partially overlapping the first region; a first energy source configured to direct energy along a first path within the first region of the build plane; and', 'a first optical sensor having a first sensor field of view configured to follow the first path and to monitor energy radiated from the build plane;, 'a first additive manufacturing energy source assembly, comprising a second energy source configured to direct energy along a second path within the second region of the build plane; and', 'a second optical sensor having a second sensor field of view configured to follow the second path and to monitor energy radiated from the build plane; and, 'a second additive manufacturing energy source assembly, comprisinga processor coupled to the first and the second additive manufacturing energy source assemblies and configured to adjust an output of the first optical sensor and the second optical sensor in response to a distance between the first path and the second path falling below a threshold distance.2. The method of wherein the deconflicting includes reducing at least one of the first and the second sensor readings proportional to an overlap area of the first field of view and the second field of view.3. The method of wherein the deconflicting includes ignoring at least one of the first and the second ...

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18-02-2021 дата публикации

System for performing operations for making a workpiece starting with a cast

Номер: US20210046580A1
Автор: Ruggero PEDERZOLI

A system performing operations for making a workpiece starting with a cast is provided. The system includes a loading station into which a cast obtained from foundry operations is loaded, an unloading station in which the workpiece is unloaded, and an operating station carrying out cutting operations on parts to be discarded from the cast, including operations for eliminating sprues, cast runners, wells, vacuum branches, and foundry burrs. The operating station has a laser head that emits through a delivery source a laser beam that cuts predefined portions of the cast and head support and movement means operatively connected to the laser head to support and move it according to a predefined cutting path along which to cut from the cast parts to be discarded.

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18-02-2016 дата публикации

LASER BEAM SPOT SHAPE DETECTION METHOD

Номер: US20160045980A1
Принадлежит:

Disclosed herein is a laser beam spot shape detection method for detecting a spot shape of a laser beam oscillated by laser beam oscillator and collected by a condenser in a laser machining apparatus, the laser beam spot shape detection method including: a concave mirror holding step of holding a concave mirror having a spherical face forming a reflecting face with a chuck table; a focal point positioning step of positioning the focal point of the condenser in a proximity including the center of the spherical face forming the reflecting face of the concave mirror held by the chuck table; a laser beam irradiation step of irradiating a laser beam onto the held concave mirror, and an imaging step of capturing images of reflected light with a camera. 1. A laser beam spot shape detection method for detecting a spot shape of a laser beam oscillated by laser beam oscillation means and collected by a condenser in a laser machining apparatus , the laser machining apparatus including:a chuck table operable to hold a workpiece; anda laser beam irradiation unit operable to irradiate a workpiece held by the chuck table with a laser beam,the laser beam irradiation unit having laser beam oscillation means adapted to oscillate a laser beam, and a condenser adapted to collect the laser beam oscillated by the laser beam oscillation means and irradiate the laser beam onto the workpiece held by the chuck table,the laser beam spot shape detection method comprising:a concave mirror holding step of holding a concave mirror having a spherical face forming a reflecting face with the chuck table;a beam splitting means positioning step of positioning beam splitting means at an acting position between the laser beam oscillation means and the condenser, the beam splitting means passing a laser beam from the laser beam oscillation means to the condenser and guiding reflected light, which is collected by the condenser and reflected by the reflecting face of the concave mirror held by the chuck ...

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18-02-2016 дата публикации

ADDITIVE MANUFACTURING SYSTEM AND METHOD

Номер: US20160046077A1
Автор: YADROITSAU lhar

The invention relates to an additive manufacturing system for manufacturing a product layer-by-layer. The system includes a production arrangement which is configured to manufacture a product layer-by-layer upon receiving instructions from a control arrangement . The control arrangement is operatively connected to the production arrangement and is configured to control the operation of the production arrangement by providing control instructions for each layer of a product to be manufactured to the production arrangement . The system includes an optical monitoring arrangement which is configured to capture an image of a layer manufactured by the production arrangement and/or a layer of source material laid/placed over a previously manufactured layer of the product . The optical monitoring arrangement is also configured to send the captured image to the control arrangement for processing. The control arrangement is configured to analyse the received captured image and, if required, to adjust control instructions for the manufacturing of the next layer. 2. The system of claim 1 , wherein the optical monitoring arrangement includes a camera for capturing the image of a manufactured layer and/or a layer of source material.3. The system of claim 1 , wherein the control arrangement is configured claim 1 , by way of software claim 1 , to evaluate/identify surface irregularities of a layer manufactured by the system claim 1 , by analysing a captured image of the manufactured layer received from the optical monitoring arrangement.4. The system of claim 3 , wherein the control arrangement is configured claim 3 , by way of software:to identify a region(s)/location(s) where surface irregularities are present in/on the manufactured layer by analysing the captured image thereof; andto adjust control instructions for the next layer to be manufactured, if needed, based on at least the identified surface irregularities in the captured image.5. The system of claim 4 , wherein the ...

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06-02-2020 дата публикации

MEASURING DEVICE FOR DETERMINING A DISTANCE BETWEEN A LASER PROCESSING HEAD AND A WORKPIECE, LASER PROCESSING SYSTEM INCLUDING THE SAME AND METHOD FOR DETERMINING A DISTANCE BETWEEN A LASER PROCESSING HEAD AND A WORKPIECE

Номер: US20200041249A1
Автор: Strebel Matthias
Принадлежит:

A measuring device determines a distance between a processing head for a laser processing system configured to process a workpiece with a laser beam and the workpiece. The measuring device includes an optical coherence tomograph to measure a distance between the processing head and workpiece. In the optical coherence tomograph, measuring light generated by a measuring light source and reflected by the workpiece interferes with measuring light reflected in a reference arm with two or more reference stages. The stages include a first reference stage configured such that the measuring light reflected therein travels a first optical path length, and a second reference stage configured such that the measuring light reflected therein travels a second optical path length different from the first length, wherein the measuring light reflected by the workpiece interferes with reflected measuring light of the first reference stage and reflected measuring light of the second reference stage. 1. A measuring device for determining a distance between a laser processing head and a workpiece , comprising: a measuring arm for guiding measuring light reflected from the workpiece; and', 'a reference arm with two or more reference stages having different optical path lengths; and, 'an optical coherence tomograph configured to determine a distance between the processing head and the workpiece, the optical coherence tomograph comprising;'}an evaluation unit configured to determine the distance based on a superposition of measuring light from the measuring arm and measuring light from the reference arm.2. The measuring device according to claim 1 , wherein the optical coherence tomograph is configured to superpose the measuring light reflected by the workpiece and the measuring light reflected in the two or more reference stages.3. The measuring device according to claim 1 , wherein the evaluation unit is configured to determine the distance based on an interference between the measuring ...

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16-02-2017 дата публикации

LASER PROCESSING HEAD APPARATUS WITH CAMERA MONITOR

Номер: US20170043431A1
Принадлежит: Mitsubishi Electric Corporation

A laser processing head apparatus with a camera monitor includes a light source for illumination having a near-infrared laser diode that generates a near-infrared laser beam of which upper limit value is a wavelength of a laser beam for processing, and out of processing point-emitted light, a processing point-reflected laser beam and illumination light for imaging, which have passed through a condensed lens and a laser beam reflection mirror and are directed to the camera respectively. An optical filter blocks transmission of the processing point-emitted light and the processing point-reflected laser beam, and transmits the illumination light for imaging. 1: A laser processing head apparatus with a camera monitor , comprising:a laser beam reflection mirror that reflects and deflects a laser beam for processing and changes an advancing direction of the laser beam for processing;a condensing lens that collects a reflected laser beam for processing, which has been reflected by the laser beam reflection mirror, to a processing point of a processing material;a camera that is disposed on an opposite side of the laser beam reflection mirror to the condensing lens and on the same axis as an optical axis of the reflected laser beam for processing;an imaging optical system that is disposed between the camera and the laser beam reflection mirror and on the same axis as the optical axis of the reflected laser beam for processing;an illumination optical system that is disposed on an imaging optical system side of the laser beam reflection mirror;a light source for illumination that generates an illumination light which passes through the illumination optical system and the laser beam reflection mirror and irradiates the processing point; andan optical filter that is disposed on a laser beam reflection mirror side of the imaging optical system, whereinthe reflected laser beam for processing generates processing point-emitted light including plasma by irradiating the processing ...

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19-02-2015 дата публикации

Method for automated superalloy laser cladding with 3d imaging weld path control

Номер: US20150048058A1
Принадлежит: Siemens Energy Inc

Superalloy components, such as service-degraded turbine blades and vanes, are clad by laser beam welding. The welding/cladding path, including cladding application profile, is determined by prior, preferably real time, non-contact 3D dimensional scanning of the component and comparison of the acquired dimensional scan data with specification dimensional data for the component. A welding path for cladding the scanned component to conform its dimensions to the specification dimensional data is determined The laser welding apparatus, preferably in cooperation with a cladding filler material distribution apparatus, executes the welding path to apply the desired cladding profile. In some embodiments a post-weld non-contact 3D dimensional scan of the welded component is performed and the post-weld scan dimensional data are compared with the specification dimensional data. Preferably the welding path and/or cladding profile application are modified in a feedback loop with the pre- and/or post-welding 3D dimensional scanning.

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03-03-2022 дата публикации

Laser irradiation apparatus

Номер: US20220063015A1
Принадлежит: Samsung Display Co Ltd

A laser irradiation apparatus includes a laser beam generator that generates a first laser beam, a beam expander that expands the first laser beam and outputs the expanded first laser beam as a second laser beam, a beam splitter that splits the second laser beam into third laser beams and outputs the third laser beams, and a beam condenser that condenses the third laser beams and outputs condensed third laser beams. The beam expander includes a first lens having a first focal length and a second lens having a second focal length. The first lens is disposed between the laser beam generator and the second lens, the second lens is disposed between the first lens and the beam splitter, and the laser beam generator is spaced apart from the first lens by the first focal length.

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