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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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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 6644. Отображено 100.
06-09-2012 дата публикации

Apparatus and method for producing a three-dimensional object

Номер: US20120223059A1
Автор: Ulf Ackelid
Принадлежит: ARCAM AB

The invention concerns an apparatus for producing a three-dimensional object layer by layer using a powdery material which can be solidified by irradiating it with an energy beam, said apparatus comprising an electron gun for generating said energy beam and a working area onto which the powdery material is distributed and over which the energy beam sweeps during irradiation. The invention is characterized in that the apparatus is provided with a system for feeding controlled amounts of a reactive gas into the apparatus such as to contact the reactive gas with material positioned on the working area, said reactive gas being capable of, at least when having been exposed to the energy beam, reacting chemically and/or physically with the material positioned on the working area. The invention also concerns a method for operating an apparatus of the above type.

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Номер записи: 1
14-02-2013 дата публикации

System and method for component material addition

Номер: US20130040074A1
Автор: Dave Keicher, Ed Tucker, Gregory Thomas Krause
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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Номер записи: 2
05-01-2017 дата публикации

Powder bed fusion apparatus

Номер: US20170001243A1
Автор: Seiji Hayano
Принадлежит: Aspect Inc

A powder bed fusion apparatus has an energy beam emitting section for outputting an energy beam, a thin layer forming section for forming a thin layer of a powder material, preliminary heating means for pre-heating the thin layer of the powder material, and control means for controlling modeling, wherein the control means performs forming the thin layer of the powder material, pre-heating the thin layer of the powder material, and modeling based on slice data, in which irradiation of the energy beam is started from the central region of the thin layer, and sequentially moved to a peripheral region of the thin layer.

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Номер записи: 3
04-01-2018 дата публикации

Three-dimensional printing and three-dimensional printers

Номер: US20180001556A1
Автор: Alan Rick Lappen, Benyamin Buller, Richard Joseph ROMANO, Thomas Blasius Brezoczky, Zachary Ryan Murphree
Принадлежит: Velo3D Inc

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, and systems for the production of at least one desired 3D object. The 3D printer system (e.g., comprising a processing chamber, build module, or an unpacking station) described herein may retain a desired (e.g., inert) atmosphere around the material bed and/or 3D object at multiple 3D printing stages. The 3D printer described herein comprises one or more build modules that may have a controller separate from the controller of the processing chamber. The 3D printer described herein comprises a platform that may be automatically constructed. The invention(s) described herein may allow the 3D printing process to occur for a long time without operator intervention and/or down time.

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Номер записи: 4
04-01-2018 дата публикации

Device and method of exposure control in a device for producing a three-dimensional object

Номер: US20180001563A1
Автор: Harald HÄGER, Joachim Wichner, Markus Frohnmaier, Michael GÖTH, Robert Achim DOMRÖSE, Stefan Fröbe
Принадлежит: EOS GmbH

An exposure control device ( 31 ) serves for equipping and/or retrofitting a generative layer-wise building device ( 1 ). The latter comprises an exposure device ( 20 ) which emits electromagnetic radiation ( 22 ) or particle radiation and is configured to irradiate positions to be solidified in a layer in such a way that after cooling they exist as an object cross-section or part of the same. The exposure control device ( 31 ) has a first data output interface ( 36 ), at which control commands can be output to the exposure device ( 20 ). The control commands which are output specify one of a plurality of exposure types wherein an exposure type is defined by a predetermined combination of a radiation energy density to be emitted by the exposure device ( 20 ) and a scanning pattern with which the radiation ( 22 ) is being directed to a region of a layer of the building material ( 15 ). Furthermore, the exposure control device ( 31 ) has a second data output interface ( 37 ) at which an exposure type can be output in real time in relation to a timing of the output of a control command specifying this exposure type.

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Номер записи: 5
13-01-2022 дата публикации

METHOD AND SYSTEM FOR IMPROVED TEMPERATURE CONTROL FOR ADDITIVE MANUFACTURING

Номер: US20220008995A1
Автор: Ghosh Ranajit, He Liang, Weise Mark Kurt
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

A method and system for providing cooling to a part formed using high-temperature additive manufacturing process. Infrared sensors or cameras are used to measure sidewall temperatures and, optionally, top layer temperature. Coolant nozzles provide cooling to the sidewalls of the finished layers and, optionally, to the top layer. The coolant intensity of the coolant nozzles is controlled in order to reduce temperature gradients between layers and/or to maintain temperatures in each layer below preferred maximum temperature. 1. A method comprising:a. forming a metal part comprising a plurality of layers using a direct energy deposition additive manufacturing process, the plurality of layers comprising a top layer and a plurality of finished layers that collectively form left and right sidewalls;b. providing a plurality of coolant nozzles in fluid flow communication with a cryogenic fluid, the plurality of coolant nozzles comprising a plurality of sidewall coolant nozzles that are capable of providing cooling to at least a portion of at least one of the left and right sidewalls;c. measuring a plurality of sidewall temperatures, each of the plurality of sidewall temperatures corresponding to a different one of the plurality of layers; andd. controlling a cooling intensity of each of the plurality of coolant nozzles in order to maintain a temperature gradient between each of the plurality of side wall temperatures measured in step (c) below a first predetermined maximum temperature gradient and below a first predetermined maximum temperature.2. The method of claim 1 , wherein step (a) further comprises forming the metal part comprising the plurality of layers using a wire-arc additive manufacturing process.3. The method of claim 1 , wherein step (a) further comprises forming the metal part comprising the plurality of layers using a blown powder additive manufacturing process.4. The method of any of through claim 1 , wherein each of the plurality of layers has a height of ...

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Номер записи: 6
13-01-2022 дата публикации

REGULATION METHOD FOR ADDITIVE MANUFACTURING

Номер: US20220008997A1
Автор: Goldammer Matthias, Hanebuth Henning
Принадлежит: Siemens Energy Global GmbH & Co. KG

A regulation method, corresponding device, and computer program product for the additive manufacturing of a component. The method includes: a) acquiring spatially resolved temperature data for a layer built up additively during the manufacture of the component; b) determining at least one region-of-interest on the layer, which is intended to be processed during the manufacture of the component; c) classifying temperature values of the region-of-interest; d) forming an average value of the classified temperature values; and e) controlling a processing device with the formed average value as the input value in order to process the layer. 1. A regulation method for the additive manufacturing of a component , comprising:a) capturing spatially resolved temperature data relating to an additively constructed layer during the manufacturing of the component,b) determining at least one region of interest of the layer which is intended to be processed during the manufacturing of the component,c) classifying temperature values of the region of interest,d) forming a mean value of the classified temperature values, ande) controlling a processing device with the formed mean value as an input value in order to process the layer,wherein the processing apparatus is an induction heating apparatus for preheating the layer and comprises a regulation system which receives the mean value as an input value.2. The method as claimed in claim 1 ,wherein the temperature data are captured by means of an infrared camera or thermographic ally.3. The method as claimed in claim 1 ,wherein the temperature data are captured only in a “region of interest” of the layer, andwherein the temperature values are calculated or determined from the temperature data.4. The method as claimed in claim 1 ,wherein a histogram of temperature values is created and—for the classification—an absolute or relative class frequency of the temperature values is determined.5. The method as claimed in claim 1 ,wherein the ...

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Номер записи: 7
20-01-2022 дата публикации

Optical assembly for additive manufacturing

Номер: US20220016712A1
Автор: Bahubali S. UPADHYE, David Masayuki Ishikawa, Eric Ng, Hou T. Ng, Sandip DESAI, Sumedh Acharya
Принадлежит: Applied Materials Inc

An additive manufacturing apparatus includes a platform, a dispenser to deliver a layers of feed material onto the platform, one or more light sources to generate a first light beam and a plurality of second light beams, a galvo mirror scanner to scan the first light beam on a layer of feed material on the platform, and a plurality of polygon mirror scanners. The galvo mirror scanner has a first field of view that spans a width of a build area of the platform, whereas, each of the plurality of polygon mirror scanners having a second field of view with the plurality of polygon mirror scanners providing a plurality of second fields of view. Each second field of view is a portion of the first field of view, and the plurality of polygon mirror scanners are positioned such that the plurality of second fields of view span the width of the build area of the platform.

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Номер записи: 8
20-01-2022 дата публикации

Build Material Spreading Apparatuses for Additive Manufacturing

Номер: US20220016844A1
Автор: Berta ROIG GRAU, Fernando Juan Jover, Francesc Melia Sune, Gerard MOSQUERA DONATE
Принадлежит: Hewlett Packard Development Co LP

This build material spreading apparatus for additive manufacturing, includes a movable spreader, a build material dispenser, and a controller to calibrate the amount of build material needed to form a layer. The controller controls the build material dispenser to dispense a predetermined amount of build material. The controller controls the movable spreader to spread the dispensed build material to form a layer. The controller determines an amount of build material remaining after spreading. The controller modifies, based on the determined amount of remaining build material, the predetermined amount of build material to be subsequently provided by the build material dispenser.

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Номер записи: 9
20-01-2022 дата публикации

Material phase detection

Номер: US20220016847A1
Автор: He Luan, Jun Zeng
Принадлежит: Hewlett Packard Development Co LP

Examples of methods for detecting a material phase are described herein. In some examples, a kernel is predicted based on an input corresponding to an object and based on a machine learning model. In some examples, the machine learning model is constrained with a physical model. In some examples, a material phase is detected based on the kernel.

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Номер записи: 10
12-01-2017 дата публикации

Forming Facsimile Formation Core Samples Using Three-Dimensional Printing

Номер: US20170008085A1
Автор: Nicholas H. Gardiner, Philip D. Nguyen
Принадлежит: Halliburton Energy Services Inc

Methods including providing an actual formation core sample; determining an internal anatomy of at least a portion of the actual formation core sample; determining a virtual 3D model of the external anatomy of the actual formation core sample in a computer readable format, wherein the virtual 3D model of the external anatomy of the actual formation core sample is represented by successive 2D cross-sectional layers; providing a 3D printer; transmitting the virtual 3D model of the external anatomy of the actual formation core sample to the 3D printer; and printing a facsimile core sample using the 3D printer, thereby replicating at least a portion of the external anatomy of the actual formation core sample.

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Номер записи: 11
27-01-2022 дата публикации

Systems, methods, and media for artificial intelligence process control in additive manufacturing

Номер: US20220024140A1
Автор: Aswin Raghav Nirmaleswaran, Damas Limoge, Matthew C. PUTMAN, Vadim Pinskiy
Принадлежит: Nanotronics Imaging Inc

Systems, methods, and media for additive manufacturing are provided. In some embodiments, an additive manufacturing system comprises: a hardware processor that is configured to: receive a captured image; apply a trained failure classifier to a low-resolution version of the captured image; determine that a non-recoverable failure is not present in the printed layer of the object; generate a cropped version of the low-resolution version of the captured image; apply a trained binary error classifier to the cropped version of the low-resolution version of the captured image; determine that an error is present in the printed layer of the object; apply a trained extrusion classifier to the captured image, wherein the trained extrusion classifier generates an extrusion quality score; and adjust a value of a parameter of the print head based on the extrusion quality score to print a subsequent layer of the printed object.

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Номер записи: 12
03-02-2022 дата публикации

Metals-based additive manufacturing methods and systems with thermal monitoring and control

Номер: US20220032376A1
Автор: Michael Cai Wang, Rasim Guldiken
Принадлежит: UNIVERSITY OF SOUTH FLORIDA

A metals-based additive manufacturing machine and method are disclosed. The machine and method include a hybrid temperature monitoring system. The hybrid temperature monitoring system includes a Raman spectrometer, a single-element ultrasound transducer, and a phased-array ultrasound pair. The hybrid temperature monitoring system can generate a real-time three-dimensional temperature map of the melt pool and optionally a portion of the metal powder base and/or a formed portion of a desired artifact. The real-time three-dimensional temperature map can be used for optimizing the metals-based additive manufacturing process in real-time or during subsequent process runs.

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Номер записи: 13
03-02-2022 дата публикации

SYSTEMS AND METHODS FOR POWDER BED DENSITY MEASUREMENT AND CONTROL FOR ADDITIVE MANUFACTURING

Номер: US20220032377A1
Автор: Craven Christopher Anthony, Fontana Richard Remo, Hoisington Paul A., HUDELSON George, McCambridge Matthew, Sachs Emanuel Michael
Принадлежит: Desktop Metal, Inc.

Systems and methods are disclosed for forming a three-dimensional object using additive manufacturing. One method includes depositing a first amount of powder material onto a powder print bed of a printing system, spreading the first amount of powder material across the powder print bed to form a first layer, measuring a density of powder material within the powder print bed, and adjusting a parameter of the printing system based on the measured density of the powder material within the powder print bed. 1. A method of forming a three-dimensional object using additive manufacturing , the method comprising:depositing a first amount of metal powder material onto a powder print bed of a printing system;spreading the first amount of metal powder material across the powder print bed to form a first layer; andmeasuring a density of the powder material within the powder print bed.2. The method of claim 1 , further comprising:adjusting a parameter of the printing system based on the measured density of the metal powder material within the powder print bed.3. The method of claim 1 , further comprising:comparing the density of the metal powder material to a predetermined criteria.4. The method of claim 2 , wherein adjusting the parameter of the printing system includes:determining a second amount of metal powder material to be deposited onto the powder print bed based on the measured density of the metal powder material within the powder print bed;depositing the second amount of metal powder material onto the powder print; and spreading the second amount of metal powder material across the powder print bed to form a second layer.5. The method of claim 2 , wherein adjusting the parameter of the printing system includes:determining an amount of binder material to be deposited on a second layer based on the measured density of the metal powder material within the powder print bed;depositing a second amount of metal powder material onto the first layer; anddepositing the amount ...

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Номер записи: 14
19-01-2017 дата публикации

Selective solidification apparatus and methods

Номер: US20170014904A1
Автор: Ceri BROWN, Geoffrey Mcfarland
Принадлежит: RENISHAW PLC

This invention concerns a selective solidification apparatus including a build chamber, a build platform lowerable in the build chamber, a wiper for spreading powder material across the build platform to form successive powder layers of a powder bed, an energy beam unit for generating an energy beam for consolidating the powder material, a scanner for directing and focussing the energy beam onto each powder layer and a processor for controlling the scanner. The processor is arranged to control the scanner to scan the energy beam across the powder bed to consolidate powder material either side of the wiper when the wiper is moving across the powder bed and to scan the energy beam across at least one of the powder layers during two or more strokes of the wiper across the powder bed.

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Номер записи: 15
21-01-2021 дата публикации

Sweep gas systems

Номер: US20210016507A1
Автор: Scott Wigen
Принадлежит: Hamilton Sundstrand Corp

A sweep gas system for an additive manufacturing machine can include a gas manifold having an outlet configured to effuse gas into a build area of the additive manufacturing machine. The gas manifold can be moveable across at least a portion of the build area. The sweep gas system can include a controller configured to control a position of the gas manifold.

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Номер записи: 16
17-04-2014 дата публикации

System and method for component material addition

Номер: US20140106068A1
Автор: Dave Keicher, Ed Tucker, Gregory Thomas Krause
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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Номер записи: 17
10-02-2022 дата публикации

Defect identification using machine learning in an additive manufacturing system

Номер: US20220042924A1
Автор: Christina Xuan Yu, Darren Beckett, Kevin C. Anderson, Lars Jacquemetton, Roger Frye, Scott Betts
Принадлежит: Sigma Labs Inc

An additive manufacturing system comprises an apparatus arranged to distribute layer of metallic powder across a build plane and a power source arranged to emit a beam of energy at the build plane and fuse the metallic powder into a portion of a part. The system includes a processor configured to steer the beam of energy across the build plane and receive data generated by one or more sensors that detect electromagnetic energy emitted from the build plane when the beam of energy fuses the metallic powder. The received data is converted into one or more parameters that indicate one or more conditions at the build plane while the beam of energy fuses the metallic powder. The one or more parameters are used as input into a machine learning algorithm to detect one or more defects in the fused metallic powder.

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Номер записи: 18
17-02-2022 дата публикации

HEAT SOURCE CALIBRATION

Номер: US20220048113A1
Автор: Borras Camarasa Marc, ROSENBLATT Daniel Pablo, Vega Ponce Hector
Принадлежит: Hewlett-Packard Development Company, L.P.

An example three-dimensional printer includes a print agent distributor to provide a printing agent to a print bed of powdered build material, a heat source to apply heat over the print bed to form a printed part where printing agent is applied, a heat sensor to measure a temperature of the printed part after heat has been applied, and a processor coupled to the heat sensor. The processor is to determine a target power to be applied to the heat source heat a part to a target temperature in a subsequent printing process. The processor is to determine the target power based on the target temperature, a measured first temperature of a first printed part formed when a first power is applied to the heat source and a measured second temperature of a second printed part formed when a second, different power is applied to the heat source. 1. A three-dimensional printer comprising:a print agent distributor configured to provide a printing agent to a print bed of powdered build material;a heat source configured to apply heat over the print bed to form a printed part at a region of the print bed to which printing agent is applied;a heat sensor configured to measure a temperature of the printed part after heat has been applied by the heat source; anda processor coupled to the heat sensor, wherein the processor is configured to determine a target power to be applied to the heat source to enable a part to be heated by the heat source to a target temperature in a subsequent printing process,wherein the processor is configured to determine the target power based on the target temperature, a measured first temperature of a first printed part formed when a first power is applied to the heat source and a measured second temperature of a second printed part formed when a second power is applied to the heat source, wherein the second power is different to the first power.2. A three-dimensional printer in accordance with claim 1 , wherein the printer is configured to form printed parts ...

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Номер записи: 19
17-02-2022 дата публикации

3d printer

Номер: US20220048252A1
Автор: Byeong Cheol Baek, Dong Geun Lee, Goo Sang Jung
Принадлежит: Conception Co Ltd, Wonkwang E&Tech Co Ltd

Disclosed is 3D printer that may precisely irradiate a laser to a spot where the laser is to be irradiated so that a precise three-dimensional product may be output, and prevent a temperature deviation from occurring inside a case including a product forming chamber to improve the quality of the output product, and increase the durability of the output product by enhancing the binding force between powder and powder applied to an output bed and maximizing the melting of the powder.

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Номер записи: 20
17-02-2022 дата публикации

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

Номер: US20220050056A1
Автор: Joohyun Choi, Jyoti Mazumder
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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Номер записи: 21
04-02-2021 дата публикации

Methods for fabricating turbine engine components

Номер: US20210031269A1
Автор: Thomas Strangman
Принадлежит: Individual

Methods are provided that include depositing a nickel-base superalloy powder including gamma nickel solid solution and gamma prime (Ni 3 Al) solid solution phases onto a seed crystal having a predetermined primary orientation, fully melting the powder and a portion of the seed crystal at a superliquidus temperature to form an initial layer having the predetermined primary orientation, heat treating the layer at subsolvus temperatures to precipitate gamma prime solid solution phase particles, depositing additional powder over the layer, melting the deposited powder and a portion of the initial layer at a superliquidus temperature to form a successive layer having the predetermined primary orientation, heat treating the layer at a subsolvus temperature to precipitate gamma prime solid solution phase particles, and repeating depositing additional powder, melting the additional powder and the portion of the successive layer at the superliquidus temperature, and heat treating the successive layer at a subsolvus temperature.

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Номер записи: 22
04-02-2021 дата публикации

Blade changers for additive manufacturing systems and methods of interchanging re-coater blades in additive manufacturing systems

Номер: US20210031447A1
Автор: Jasen DEFORGE, Shawn Karl Reynolds
Принадлежит: Hamilton Sundstrand Corp

A blade changer includes a housing with a port, a magazine supported within the housing, and a manipulator. The manipulator is operably associated with the magazine and has a reach extending beyond the port to interchange re-coater blades between the magazine and an additive manufacturing system coupled to the port. Additive manufacturing systems and methods of interchanging a deployed re-coater blade with a staged re-coater blade are also described.

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Номер записи: 23
09-02-2017 дата публикации

Systems for quality monitoring of additive manufacturing

Номер: US20170038342A1
Автор: Aaron T. Nardi, Greg C. OJARD, Michael A. Klecka, Patrick L. CLAVETTE
Принадлежит: Delavan Inc

A system for quality monitoring of additive manufacturing includes an acoustic emission (AE) sensor configured to be attached to an additive manufacturing substrate and to output a sensor signal indicative of acoustic vibrations received at the AE sensor and an AE module. The AE module is configured to receive the sensor signal from the AE sensor and process the sensor signal to determine at least one characteristic of an additive manufacturing process and/or an additively manufactured article.

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Номер записи: 24
24-02-2022 дата публикации

DEVICE AND METHOD FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE

Номер: US20220055115A1
Автор: Hoppe Birk, Husmann Meike, IQBAL Naveed, Kondziella Kevin, KRATZ Bärbel, Krol Toni Adam, Schniedenham Maximilian, Schwarze Dieter, Stengel Christopher, Wilkes Jan
Принадлежит:

We describe a process chamber, an apparatus, a modular system, a method, a safety device, a positioning system and a system for producing a three-dimensional workpiece and/or for use thereof when producing a three-dimensional workpiece. The process chamber for producing the three-dimensional workpiece via an additive layer construction method comprises: a material supply unit comprising a substantially ring-like shaped end portion at a first side of the process chamber, wherein the material supply unit is adapted to supply, via the end portion, material to a carrier on which the material is to be processed by the process chamber for producing the three-dimensional workpiece, and an opening at the first side of the process chamber for processing, by the process chamber, the material supplied on the carrier in order to produce the three-dimensional workpiece, wherein the substantially ring-like shaped end portion surrounds the opening. 1. An apparatus for producing a three-dimensional workpiece via an additive layer construction method , the apparatus comprising:a carrier adapted to receive material for producing the three-dimensional workpiece;a material supply unit adapted to supply material to the carrier and/or preceding material layers on top of the carrier,a layer depositing mechanism for forming the supplied material into a material layer on top of the carrier and/or the preceding material layers on top of the carrier,a solidification device adapted to solidify the material supplied to the carrier and/or the preceding material layers on top of the carrier for producing the three-dimensional workpiece,a gas supply unit adapted to supply a shielding gas to an area of the material layer that is to be solidified by the solidification device,a process chamber comprising the gas supply unit and the solidification device,a moving unit adapted to move the process chamber relative to the carrier, anda positioning system adapted to determine a position of the process ...

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Номер записи: 25
06-02-2020 дата публикации

Thermal control for additive manufacturing

Номер: US20200038957A1
Автор: Eric W. Karlen
Принадлежит: Hamilton Sundstrand Corp

An additive manufacturing system for building a product includes a base plate for mounting the product thereon, and at least one heating element shaped to at least partially conform to the product and configured to apply heat to at least a portion of the product as the product is additively manufactured to reduce thermal gradients in the product.

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Номер записи: 26
13-02-2020 дата публикации

Additive manufacturing apparatus and method for manufacturing three-dimensionally shaped object

Номер: US20200047250A1
Автор: Koji Kitani, Naoki Takizawa
Принадлежит: Canon Inc

An additive manufacturing apparatus includes a powder layer forming portion, an energy beam source, and a contact detection sensor including a plate-like probe. The powder layer forming portion is configured to form a powder layer in a predetermined region. The energy beam source is configured to radiate an energy beam to the powder layer formed by the powder layer forming portion to fuse or sinter the powder layer so that a solidified layer is formed. Presence or absence of a projection portion on a surface of the solidified layer is detected by using the contact detection sensor.

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Номер записи: 27
10-03-2022 дата публикации

MANUFACTURING DEVICE

Номер: US20220072617A1
Автор: ANTONY Pierre, COURAPIED Damien, POUZET Sébastien Yohann
Принадлежит:

The invention relates to a device () for manufacturing a part () made of metallic material, comprising a depositing member () made of said metallic material. The device () further comprises an impacting member () of the material being deposited by emitting an energy beam (), so as to locally modify its crystalline structure. 11100245. A device () for manufacturing a part () made of metallic material , comprising a member () for depositing said metallic material , characterized in that it also comprises an impact member () for impacting the material being deposited by emitting an energy beam () , so as to locally modify its crystal structure.212101. The device () as claimed in claim 1 , wherein the deposition member () is configured to deposit beads () of molten metal.31210. The device () as claimed in claim 2 , wherein the deposition member () is configured to deposit beads () of molten titanium-based alloy.4145101. The device () as claimed in claim 2 , wherein the impact member () is configured to focus the energy beam () on at least one of the beads ().514. The device () as claimed in claim 1 , wherein the impact member () is adapted to locally modify the crystal structure into a substantially equiaxed structure.614. The manufacturing device () as claimed in claim 1 , wherein said impact member () is a laser claim 1 , preferentially a pulsed laser having a pulse duration comprised between 5 nanoseconds and 150 nanoseconds.7124. The device () as claimed in claim 1 , comprising a closed enclosure confining the deposition member () and the impact member ().8154. The device () as claimed in claim 7 , comprising an inductor for regulating a temperature in the closed enclosure claim 7 , a camera coupled to a pyrometer for viewing the part and measuring the temperature before the energy beam () is emitted by the impact member ().910015. A process for manufacturing a titanium-based alloy part () claim 1 , using a device () as claimed in claim 1 , the process comprising ...

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Номер записи: 28
10-03-2022 дата публикации

Interrupted additive manufacturing

Номер: US20220072773A1
Автор: Aja HARTMAN, Jarrid WITTKOPF, Kristopher J. ERICKSON, Lihua Zhao
Принадлежит: Hewlett Packard Development Co LP

In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a build material distributor to deposit layers of powdered build material onto a bed to form a three-dimensional (3D) printed object. The additive manufacturing system also includes a controller to interrupt printing of the 3D printed object and to resume printing of the 3D printed object. The additive manufacturing system also includes a heat source to, during an interruption in printing, maintain a temperature of a top surface of the powdered build material between a solidification temperature and a melting temperature for the build material.

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Номер записи: 29
01-03-2018 дата публикации

Three-dimensional printing and three-dimensional printers

Номер: US20180056391A1
Автор: Alan Rick Lappen, Benyamin Buller, Richard Joseph ROMANO, Thomas Blasius Brezoczky, Zachary Ryan Murphree
Принадлежит: Velo3D Inc

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, and systems for the production of at least one desired 3D object. The 3D printer system (e.g., comprising a processing chamber, build module, or an unpacking station) described herein may retain a desired (e.g., inert) atmosphere around the material bed and/or 3D object at multiple 3D printing stages. The 3D printer described herein comprises one or more build modules that may have a controller separate from the controller of the processing chamber. The 3D printer described herein comprises a platform that may be automatically constructed. The invention(s) described herein may allow the 3D printing process to occur for a long time without operator intervention and/or down time.

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Номер записи: 30
21-02-2019 дата публикации

Additive manufacturing systems, additive manufactured components including portions having distinct porosities, and methods of forming same

Номер: US20190054567A1
Автор: Brendon James Leary, Felix Martin Gerhard Roerig, Julius Andreas Schurb, Thomas Etter
Принадлежит: General Electric Co

Additive manufactured components including portions having distinct porosities, and systems/methods of forming components including portions having distinct porosities are disclosed. The components may include a first portion having a first porosity. The first portion may include a first exposure pattern of a plurality of scan vectors extending over the first portion. The first exposure pattern may define the first porosity of the first portion. The component may also include a second portion positioned adjacent the first portion. The second portion may include a second porosity greater than the first porosity of the first portion. Additionally, the second portion may include a second exposure pattern of a plurality of scan vectors extending over the second portion. The second exposure pattern may be distinct from the first exposure pattern of the first portion, and may define the second porosity of the second portion.

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Номер записи: 31
04-03-2021 дата публикации

Multi-sensor quality inference and control for additive manufacturing processes

Номер: US20210060647A1
Автор: Alberto Castro, David D. Clark, Mark J. Cola, Martin S. Piltch, Matias Roybal, R. Bruce Madigan, Vivek R. Dave
Принадлежит: Sigma Labs Inc

This invention teaches a multi-sensor quality inference system for additive manufacturing. This invention still further teaches a quality system that is capable of discerning and addressing three quality issues: i) process anomalies, or extreme unpredictable events uncorrelated to process inputs; ii) process variations, or difference between desired process parameters and actual operating conditions; and iii) material structure and properties, or the quality of the resultant material created by the Additive Manufacturing process. This invention further teaches experimental observations of the Additive Manufacturing process made only in a Lagrangian frame of reference. This invention even further teaches the use of the gathered sensor data to evaluate and control additive manufacturing operations in real time.

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Номер записи: 32
28-02-2019 дата публикации

Powder bed re-coater apparatus and methods of use thereof

Номер: US20190060998A1
Автор: David Barnhart, Rajendra Kelkar
Принадлежит: General Electric Co

The present disclosure relates to systems, methods, and apparatuses for supplying powder to a powder bed during an additive manufacturing process. A recoater apparatus includes a powder reservoir and a powder distribution system for conveying powder from the powder reservoir to the powder bed. The recoater apparatus further includes at least two sweep strips, wherein at least one exit of the powder distribution system is located between the two sweep strips so as to shield the exit of the powder distribution system.

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Номер записи: 33
17-03-2022 дата публикации

PROCESSING POWDER SUITABLE FOR LASER MELTING WITH A CENTRAL INERT GAS DISTRIBUTOR AND WITH OXYGEN MONITORING

Номер: US20220080505A1
Автор: Giek Daniel, Laib Wolfgang
Принадлежит:

The disclosure provides systems and methods for processing powder suitable for laser melting, with at least one component that is or comes into contact with the powder and to which an inert gas is fed. The systems include a central inert gas distributor, which can be connected or is connected to an inert gas source and to which the at least one component is connected by way of an activatable valve, an oxygen sensor in the at least one component, and a controller, which activates the valve on the basis of measurement data of the oxygen sensor. As an alternative or in addition to the central inert gas distributor, the system can have a data processing unit, which records and evaluates the measurement data of the oxygen sensor. 1. A system for processing powder suitable for laser melting , the system comprising:one or more components that come into contact with the powder and to which an inert gas is fed;a central inert gas distributor, which can be connected to, or is connected to, an inert gas source;an activatable valve arranged between the central inert gas distributor and the one or more components to control a flow of inert gas from the central inert gas distributor to the one or more components;an oxygen sensor arranged in or on the one or more components and configured to measure oxygen within the component and to provide oxygen measurement data; anda controller arranged to receive the oxygen measurement data and configured to activate the activatable valve according to the oxygen measurement data.2. The system of claim 1 , wherein the activatable valve is connected to the central inert gas distributor via one or more gas transfer conduits.3. The system of claim 1 , further comprising a central inert gas processing system connected to the central inert gas distributor.4. The system of claim 3 , further comprising a central sieving station for cleaning the powder.5. The system of claim 4 , wherein one or more of the central inert gas distributor claim 4 , the ...

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Номер записи: 34
17-03-2022 дата публикации

Three-Dimensional Powder Bed Fusion Additive Manufacturing Apparatus and Three-Dimensional Powder Bed Fusion Additive Manufacturing Method

Номер: US20220080506A1
Автор: Kitamura Shinichi, Tsutagawa Nari
Принадлежит:

A three-dimensional powder bed fusion additive manufacturing apparatus includes a storage unit that stores first correspondence information that is correspondence information between an amount of thermal electrons emitted from a build surface and temperature of the build surface, a beam generating unit that irradiates the build surface with a beam, a thermal electron detecting unit that detects thermal electrons emitted from the build surface during irradiation of the beam, and a build surface temperature calculating unit that calculates the temperature of the build surface with reference to the first correspondence information on the basis of the thermal electrons detected by the thermal electron detecting unit. 1. A three-dimensional powder bed fusion additive manufacturing (PBF-AM) apparatus comprising:a storage unit configured to store first correspondence information that is correspondence information between an amount of thermal electrons emitted from a build surface and temperature of the build surface, the build surface being an uppermost layer among powder layers formed by building up layers of a powder sample on a build plate;a beam generating unit configured to irradiate the build surface with a beam;a thermal electron detecting unit configured to detect the thermal electrons emitted from the build surface; anda build surface temperature calculating unit configured to calculate the temperature of the build surface with reference to the first correspondence information based on the thermal electrons detected by the thermal electron detecting unit.2. The three-dimensional PBF-AM apparatus according to claim 1 , further comprising:a metal deposition preventive cover provided at a position that is above the build surface and covers a side surface of an area through which the beam passes, the deposition preventive cover being electrically insulated from a ground potential; anda voltage applying unit configured to apply a predetermined positive voltage to the ...

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Номер записи: 35
27-02-2020 дата публикации

Debinder for 3d objects

Номер: US20200061708A1
Автор: Daniel R. Jepeal, Paul E. Dresens
Принадлежит: Desktop Metal Inc

A debinder provides for debinding printed green parts in an additive manufacturing system. The debinder can include a storage chamber, a process chamber, a distill chamber, a waste chamber, and a condenser. The storage chamber stores a liquid solvent for debinding the green part. The process chamber debinds the green part using a volume of the liquid solvent transferred from the storage chamber. The distill chamber collects a solution drained from the process chamber and produces a solvent vapor from the solution. The condenser condenses the solvent vapor to the liquid solvent and transfer the liquid solvent to the storage chamber. The waste chamber collects a waste component of the solution.

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Номер записи: 36
27-02-2020 дата публикации

Multi-spectral method for detection of anomalies during powder bed fusion additive manufacturing

Номер: US20200061710A1
Автор: Abdalla R. NASSAR, Alexander J. Dunbar, Edward W. Reutzel
Принадлежит: PENN STATE RESEARCH FOUNDATION

Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

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Номер записи: 37
11-03-2021 дата публикации

A method of generating a mold and using it for printing a three-dimensional object

Номер: US20210069784A1
Автор: Alexander C. BARBATI, Mats Moosberg
Принадлежит: Addleap AB, Desktop Metal Inc

This invention relates to three-dimensional printing. This invention in particular relates to a method of generating mold and printing a three-dimensional object. The mold thickness is controlled and holes are generated in the mold surface for releasing moisture easily. The mold surface having holes is designed initially digitally and then combined with the three-dimensional model before printing the three-dimensional object. In case the thickness of the mold surface is more then it reduces the overall quality of the three-dimensional object. When the model is enclosed inside the mold, there will be some residue moisture in the model even if the drying apparatus can improve this by drying layer by layer. This affects the final quality of the part. A solution of these problems is provided in the present invention. The thickness of the mold layer is between 0.5 to 1 mm and holes having 0.1 to 0.4 mm diameter. The holes are evenly distributed on the mold. The mold having the holes is prepared from which moisture can easily escape. A method of digitally generated a mold having thin layer and holes is used for fabricating three dimensional objects with high precision and quality.

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Номер записи: 38
17-03-2016 дата публикации

Three-dimensional printing apparatus, three-dimensional object forming method, and three-dimensional object

Номер: US20160075085A1
Автор: Takafumi Sasaki
Принадлежит: Ricoh Co Ltd

A three-dimensional printing apparatus for forming a three-dimensional object is provided. The three-dimensional printing apparatus includes a forming unit to supply a powder to form a powder layer and a head to eject liquid droplets of a forming liquid onto the powder layer to bond particles of the powder layer to form a forming layer. The forming unit and the head form laminated forming layers by sequentially repeating forming the powder layer and ejecting the forming liquid to form a between-layers vacant space formed between the two successive forming layers sequentially laminated in the laminating direction.

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Номер записи: 39
24-03-2022 дата публикации

ADDITIVE MANUFACTURING SYSTEM AND METHODS FOR REPAIRING COMPONENTS

Номер: US20220088680A1
Автор: CUPITO John Louis, Fedyk Glen Charles, Hadjar Meddah, Hampshire Joseph Edward, JR. Richard Roy, Matacia Anthony John, Perumal Thines Kumar Maragatham, Shen Hongyuan, Shi Jinjie, Sun Hongqing, WORTHING
Принадлежит:

A system () and method () for repairing one or more components () using an additive manufacturing process includes securing the components () in a tooling assembly () such that a repair surface () of each component () is positioned within a single build plane (), determining a repair toolpath () corresponding to the repair surface () of each component using a vision system (), depositing a layer of additive powder () over the repair surface () of each component () using a powder dispensing assembly (), and selectively irradiating the layer of additive powder () along the repair toolpath () to fuse the layer of additive powder () onto the repair surface () of each component (). 1200200. A method () for repairing one or more components using an additive repair system , the method () comprising:{'b': '210', 'securing the one or more components in a tooling assembly, each of the one or more components having a repair surface ();'}{'b': '220', 'determining a repair toolpath corresponding to the repair surface of each of the one or more components using a vision system ();'}{'b': '230', 'depositing a layer of additive powder over the repair surface of each of the one or more components using a powder dispensing assembly (); and'}{'b': '240', 'selectively irradiating the layer of additive powder along the repair toolpath to fuse the layer of additive powder onto the repair surface of each of the one or more components ().'}2200. The method () of claim 1 , further comprising:removing material above the repair surface of each of the one or more components using a material removal assembly.3200. The method () of claim 1 , wherein the vision system comprises one or more cameras or a three-dimensional scanner.4200220. The method () of claim 1 , wherein the step of determining a repair toolpath corresponding to the repair surface of each of the one or more components () comprises:obtaining a digital representation of the one or more components using the vision system; ...

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Номер записи: 40
24-03-2022 дата публикации

Determining a position of a building platform within a process chamber of an additive manufacturing device

Номер: US20220088682A1
Автор: Elia Mantoan, Guglielmo Cavalcabo, Mattia Boron
Принадлежит: Trumpf Additive Manufacturing Italia Srl

A method determines position data of a platform at a plate of an additive manufacturing device, having scanner optics for scanning a laser. The plate has holes that receive a holder, marks on the plate, and receptors for receiving laser target parts. A first position dataset is obtained with a position of a holder inserted in a hole with respect to the marks. After mounting the plate and inserting the platform into the holder, a laser mark is marked on the laser target parts using the laser at laser mark positions in the scanner optics' coordinate system. A pre-manufacturing image of the support plate is acquired with the laser marks on the laser target parts. A second position dataset having positions of the marks with respect to the laser marks is obtained from the pre-manufacturing image. The position data is determined from the position datasets and the laser mark positions.

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Номер записи: 41
24-03-2022 дата публикации

METHOD OF ONLINE STRESS MEASUREMENT RESIDUAL DURING LASER ADDITIVE MANUFACTURING

Номер: US20220088683A1
Автор: Lu Yi, Mazumder Jyotirmoy, SUN Guifang
Принадлежит:

A system and method for monitoring real time stress development of laser additive manufacturing. In some embodiments, the system comprises a laser machine, a laser deposition head, an illumination laser, a line laser, two CCD cameras, a spectrum meter, a computer, and an ultrasonic shot head. The CCD camera can record the molten pool height and the line laser can be directed behind the molten pool to measure the shape and/or height of the newly formed layer. The computer builds a real-time FEM model of the layer, calculates the displacement of the solidified surface, and then calculates the stress formed in the layer. The spectrum meter monitors for non-stress induced defects. The data is transferred into a computer to determine whether defects will occur and control the laser deposition and ultrasonic shot head to treat the area and prevent emergence of stress induced defect. 1. A method of online residual stress monitoring and defect repairing during laser metal deposition process , the method comprising:measuring a height of molten material and a solidified layer;building a real-time model of a clad layer based on the measured height of the molten materials and the solidified layer;calculating a stress by analyzing a displacement of the solidified layer; andmonitoring non-stress induced defects.2. The method according to claim 1 , wherein the measuring is completed using a line laser claim 1 , two CCD cameras claim 1 , and an illumination laser.3. The method according to claim 1 , wherein the monitoring non-stress induced defects comprises monitoring non-stress induced defects using a spectrum meter.4. A real-time FEM model building method comprising:dividing a CCD recorded video into a plurality of frames;dividing a cladded layer into the same number of sections as the plurality of frames;assuming the shape of each section as a half circle;forming a meshed rectangular area on ⅓ of the radius of the half circle at a core area of the section;dividing the half ...

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Номер записи: 42
24-03-2022 дата публикации

In situ multi-phase sensing for 3d printing

Номер: US20220088684A1
Автор: Chor Yen YAP, Eric Yang, Michael Kenworthy, Narender LAKSHMAN, Simon PUN
Принадлежит: Divergent Technologies, Inc.

In various aspects, 3D printers, and sensor systems coupled to or integrated with the 3D printers are disclosed. The sensor systems may include image and second sensors for detecting potential defects or print artifacts. During printing, an energy beam source forms a weld pool by melting selected regions of print material, which solidifies to produce the build piece. The image sensor may image an area including the weld pool to determine a landing location of matter ejected during the heating of print material to form the weld pool. The second sensor may detect a defect in the build piece based on the determination of the landing location. Print operation may be suspended while the sensor data is used to repair the defect, after which 3D printing resumes. In this way, for example, high quality build pieces can be produced with reduced post-processing times, and hence a higher manufacturing throughput.

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Номер записи: 43
24-03-2022 дата публикации

REAL TIME QUALITY ASSURANCE FOR ADDITIVE MANUFACTURING

Номер: US20220088685A1
Автор: KENWORTHY Michael, Yang Eric
Принадлежит:

In various aspects, 3D printers and recoaters incorporate sensor systems coupled to or integrated with the 3D printers. The sensor systems may include eddy current sensors and other sensors configured to measure an electromagnetic characteristic of the build piece. A three-dimensional (3-D) printer in one aspect includes a depositor configured to deposit metal, an energy beam source configured to selectively melt the metal to form a portion of a build piece, and a sensor configured to move relative to a surface of the print area and to measure an electromagnetic characteristic of the portion of the print area. The measured data can be used to detect defects and other information about the build piece that can be used to fix the defects or enhance the build piece geometry during the printing. 1. A three-dimensional (3-D) printer , comprising:a depositor configured to deposit metal in a print area of the 3-D printer;an energy beam source configured to selectively melt the metal to form a portion of a build piece; anda sensor configured to move relative to a surface of the print area and to measure an electromagnetic characteristic of the portion of the print area.2. The 3-D printer of claim 1 , further comprising a controller configured to modify an operation of the 3-D printer based on the measured electromagnetic characteristic.3. The 3-D printer of claim 2 , wherein the portion of the print area includes the build piece claim 2 , and the electromagnetic characteristic is an electromagnetic characteristic of the build piece.4. The 3-D printer of claim 3 , wherein the controller is further configured to detect a defect in the build piece based on the electromagnetic characteristic claim 3 , and modifying the operation is based on the detection of the defect.5. The 3-D printer of claim 4 , wherein the defect includes at least an inclusion claim 4 , a void claim 4 , unfused powder claim 4 , partially-fused powder claim 4 , a crack claim 4 , or a contamination.6. The 3- ...

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Номер записи: 44
24-03-2022 дата публикации

ADAPTING MANUFACTURING SIMULATION

Номер: US20220088878A1
Автор: Lopez Collier de la Marliere Carlos Alberto, Luan He, Zeng Jun
Принадлежит: Hewlett-Packard Development Company, L.P.

Examples of methods for adapting a simulation of three-dimensional (3D) manufacturing are described herein. In some examples, a method includes determining, using a machine learning model, a predicted thermal image based on a thermal imaging stream of 3D manufacturing. In some examples, a method includes adapting a simulation of the 3D manufacturing based on the predicted thermal image. 1. A method , comprising:determining, using a machine learning model, a predicted thermal image based on a thermal imaging stream of three-dimensional (3D) manufacturing; andadapting a simulation of the 3D manufacturing based on the predicted thermal image.2. The method of claim 1 , wherein adapting the simulation comprises setting a boundary condition based on the predicted thermal image.3. The method of claim 1 , further comprising assembling the predicted thermal image for a first layer with a second predicted thermal image for a second layer to produce a composite thermal image sequence.4. The method of claim 3 , wherein adapting the simulation comprises setting a boundary condition based on the composite thermal image sequence.5. The method of claim 1 , further comprising applying a low-pass filter in time and space to the predicted thermal image or a composite thermal image sequence to produce a filtered thermal image.6. The method of claim 5 , wherein adapting the simulation comprises setting a boundary condition based on the filtered thermal image.7. The method of claim 1 , further comprising controlling the predicted thermal image or a composite thermal image sequence to produce a controlled thermal image.8. The method of claim 7 , wherein adapting the simulation comprises setting a boundary condition based on the controlled thermal image.9. The method of claim 1 , wherein the simulation produces a simulated composite layer based on a composite thermal image sequence that is based on the predicted thermal image of a first layer and a second predicted thermal image of a ...

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Номер записи: 45
16-03-2017 дата публикации

Printhead module for additive manufacturing system

Номер: US20170072463A1
Автор: Hou T. Ng, Nag B. Patibandla, Raanan Zehavi
Принадлежит: Individual

A module for an additive manufacturing system includes a frame configured to be removably mounted on a movable support, a dispenser configured to deliver a layer of particles on a platen that is separate from the frame or an underlying layer on the platen, a heat source configured to heat the layer of particles to a temperature below a temperature at which the particles fuse, and an energy source configured to fuse the particles. The dispenser, heat source and energy source are positioned on the frame in order along a first axis, and the dispenser, heat source and energy source are fixed to the frame such that the frame, dispenser, heat source and energy source can be mounted and dismounted as a single unit from the support.

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Номер записи: 46
31-03-2022 дата публикации

THREE-DIMENSIONAL DEPOSITION DEVICE AND METHOD

Номер: US20220097143A1
Автор: WAKANA Tomohiro
Принадлежит:

In the three-dimensional deposition device and the three-dimensional deposition method, included are: a powder passage and a nozzle injection opening serving as a powder supply unit that supplies powder toward an object to be processed; a laser path serving as a light irradiation unit that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam to form a formed layer; an interference information acquisition unit that acquires interference information on the object to be processed with the powder injected from the nozzle injection opening based on the shape of the object to be processed; and a controller that changes the powder passage of the powder that the nozzle injection opening supplies to the object to be processed based on the interference information acquired by the interference information acquisition unit. 1. A three-dimensional deposition device configured to form a three-dimensional object by depositing a formed layer on an object to be processed , the three-dimensional deposition device comprising:a powder supply unit configured to supply a powder material to a working surface of the object to be processed:a light irradiation unit configured to irradiate the powder material with a light beam to sinter or melt and solidify at least a part of the powder material irradiated with the light beam to form the formed layer;an interference information acquisition unit configured to acquire interference information on the object to be processed with the powder material injected from the powder supply unit based on the shape of the object to be processed; anda controller configured to change a supply path of the powder material supplied from the powder supply unit to a working surface of the object to be processed based on the interference information acquired by the interference information acquisition unit,wherein the powder supply unit includes a plurality of powder injection units ...

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Номер записи: 47
29-03-2018 дата публикации

Three-dimensionally formed object manufacturing apparatus and method of manufacturing three-dimensionally formed object

Номер: US20180085997A1
Автор: Akihiko Tsunoya
Принадлежит: Seiko Epson Corp

A three-dimensionally formed object manufacturing apparatus includes: an ejector ejecting a fluid material including particles, which form a constituent material of a three-dimensionally formed object, and a solvent; a stage on which a layer formed of the fluid material, which is ejected from the ejector, is laminated; an obtainer obtaining an image of the layer formed of the fluid material formed on the stage; a dryer volatilizing the solvent included in the fluid material on the stage; and a determiner determining whether a predetermined amount or more of the solvent is volatilized based on the image obtained by the obtainer, in which a next layer formed of the fluid material is laminated after the determiner determines that the predetermined amount or more of the solvent is volatilized per predetermined layer formation in a laminating direction of the layer formed of the fluid material.

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Номер записи: 48
05-05-2022 дата публикации

Calibrating sensors

Номер: US20220134669A1
Автор: Jorge DIOSDADO BORREGO, Marc GARCIA GRAU, Marta Gonzalez Mallo
Принадлежит: Hewlett Packard Development Co LP

A sensor calibration method is disclosed. The method includes applying thermal energy to a fabrication chamber of an additive manufacturing apparatus to raise a temperature of a surface within the fabrication chamber to a first surface temperature; measuring, using a first sensor to be calibrated, the first surface temperature; measuring, using a second sensor, the first surface temperature; applying thermal energy to the fabrication chamber to raise a temperature of the surface to a second surface temperature; measuring, using the first sensor, the second surface temperature; measuring, using the second sensor, the second surface temperature; determining, using a processor, based on the first and second surface temperatures measured using the first sensor and on the first and second surface temperatures measured using the second sensor, an offset calibration to be applied to measurements obtained using the first sensor; and applying the offset calibration to measurements obtained using the first sensor. An additive manufacturing apparatus and a machine-readable medium are also disclosed.

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Номер записи: 49
05-05-2022 дата публикации

Method for producing a three-dimensional component

Номер: US20220134671A1
Автор: Frank Herzog
Принадлежит: CONCEPT LASER GMBH

The invention relates to a method for manufacturing a three-dimensional component 14 by means of an additive construction method in which the component 14 is constructed by solidifying construction material 9 that can be solidified using radiation 18 , especially a selective laser melting method or a selective laser sintering method, in which the component 14 is produced by successively solidifying construction material 9 that can be solidified using the impact of radiation 18 by melting or sintering, comprising the following features: providing an additive construction apparatus 1 , especially an SLM apparatus or an SLS apparatus, comprising a process chamber 3 , a construction platform 7 for carrying the construction material 9 , and a radiation source arranged above the construction platform 7 for generating a point-type or linear energy input for creating a melting or sintering section in the construction material 9 , providing a sensor apparatus 31 for selective detection of created melting or sintering sections and for the generation of sensor values therefrom for characterizing the melting or sintering sections, and storage of said sensor values together with coordinate values localizing the sensor values in the component 14 , determination of load and flux information in the component 14 manufactured or to be manufactured by means of a calculation or measuring method for determining critical load areas in the component 14 manufactured or to be manufactured, spatial correlation of the sensor values determined for the evaluation of the component quality together with the coordinate values localizing said values with coordinates of the load and flux information, and assessment of the component 14 finished or to be finished, such that components 14 for which sensor values negatively impacting the component quality are determined in the range of critical or highly loaded sections of the load and flux information are classified as components 14 not corresponding ...

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Номер записи: 50
01-04-2021 дата публикации

METHOD AND APPARATUS FOR FORMING A THREE-DIMENSIONAL ARTICLE

Номер: US20210094100A1
Автор: Ljungblad Ulric
Принадлежит: ARCAM AB

An apparatus for forming a three-dimensional article through successive fusion of parts of a powder bed, which parts corresponds to successive cross sections of the three-dimensional article, said apparatus comprising: a powder distributor configured for evenly distributing a layer of powder on top of a work table provided inside a vacuum chamber; and an electron beam source emanating an electron beam configured for fusing the powder layer in selected locations corresponding to said cross section of the three-dimensional article, wherein: said powder distributor being an elongated rod provided movable at a predetermined distance above the powder bed and with its central axis in parallel with a top surface of said work table, wherein at least one sensor is provided on said powder distributor facing towards said electron beam source, a detector for detecting a signal sent out from said sensor when said sensor is interacting with said electron beam. 2. The apparatus according to claim 1 , wherein a hollow pattern is provided in said at least one opening.3. The apparatus according to claim 2 , wherein said hollow pattern is made of a material with a higher atomic number compared to the at least one metal plate.4. The apparatus according to claim 1 , wherein said at least one sensor is directly attached to a top surface of said powder distributor.5. The apparatus according to claim 1 , wherein said at least one sensor is attached at a predetermined distance above said powder distributor.6. The apparatus according to claim 1 , wherein said at least one metal plate is made of a different material compared to said powder distributor.7. The apparatus according to claim 1 , wherein said at least one sensor is arranged movable along the central axis of said powder distributor.8. The apparatus according to claim 1 , wherein said at least one sensor is arranged movable in a direction perpendicular to the work table.9. A method for forming at least one three-dimensional article ...

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Номер записи: 51
12-05-2022 дата публикации

MATERIAL REMOVAL SYSTEM

Номер: US20220143703A1
Автор: CHANCLON FERNANDEZ David, DIOSDADO BORREGO Jorge, MIGUELEZ CAMPILLO Sergio
Принадлежит:

A three-dimensional printer is described, wherein the three-dimensional printer comprises a build unit and a material removal unit. The build unit is configured to generate a three dimensional object. The material removal unit comprises a housing, a plurality of gas inlets and outlets, a plurality of valves and a control unit. The housing is sealed to the build unit and is configured to house a cake comprising the generated three dimensional object. The valves are configured to open and close the inlets and outlets, and the control unit is configured to control the valves, to allow gas to flow from different inlets to different outlets in different flow paths, in order remove powder from the object. 1. A material removal system comprising a material removing unit , wherein the material removing unit comprises:a housing configured to house a cake comprising a three-dimensional object generated by a printing process;a plurality of gas inlets and outlets provided in the housing, wherein the plurality of gas inlets and outlets each comprise a valve for actuating the respective inlet or outlet;a control unit for controlling the plurality of valves to allow gas to flow through the housing to remove powdered build material from the cake comprising the three-dimensional object;wherein the control unit is configured to selectively actuate the valves to allow gas to flow through the housing in a plurality of different flow paths.2. A material removal system in accordance with claim 1 , wherein the material removing unit comprises a securing mechanism configured to secure the object within the housing.3. A material removal system in accordance with claim 2 , wherein the securing mechanism is configured to suspend the object within the housing.4. A material removal system in accordance with claim 1 , wherein the material removing unit comprises a vibration mechanism configured to vibrate the object.5. A material removal system in accordance with claim 1 , wherein the control ...

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Номер записи: 52
12-05-2022 дата публикации

MONITORING SYSTEM AND METHOD OF IDENTIFICATION OF ANOMALIES IN A 3D PRINTING PROCESS

Номер: US20220143704A1
Автор: HUM Jun Wee Allen, LU Qingyang, NGUYEN Ngoc Vu, Tran Anh Tuan, WONG Chee How
Принадлежит:

A monitoring system for in-situ identification of anomalies of a workpiece in a 3D printing manufacturing process is provided. The monitoring system includes an optical sensor having an optical path; an infrared sensor having an IR path; an optical device configured to merge the optical and the IR paths to obtain a merged optical path, which is arranged to be directed to the workpiece during a first stage of a 3D printing manufacturing process to obtain a first perception data; and a processor configured to identify anomalies of the workpiece based on the first perception data. A method is also provided. The method includes steps of: merging an optical path of an optical sensor and an infrared path of an IR sensor using an optical device to obtain a merged path; directing the merged path to the workpiece during a first stage of a 3D printing manufacturing process to obtain a first perception data; and identifying anomalies of the workpiece based on the first perception data. 1. A monitoring system for in-situ identification of anomalies of a workpiece in a 3D printing manufacturing process , the monitoring system comprising:a processor;an optical sensor having an optical path;an infrared (IR) sensor having an IR path;an optical device configured to merge the optical path and the IR path to obtain a merged optical path, the merged optical path arranged to be directed to the workpiece during a first stage of the 3D printing manufacturing process to obtain a first perception data;wherein the processor is configured to identify anomalies of the workpiece based on the first perception data.2. The monitoring system of claim 1 , wherein the processor is further configured to segment the first perception data into foreground anomaly features and background anomaly features claim 1 , and further configured to determine a type of anomaly based on at least one of the foreground anomaly features and the background anomaly features.3. The monitoring system of claim 2 , wherein ...

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Номер записи: 53
12-05-2022 дата публикации

X-RAY REFERENCE OBJECT, X-RAY DETECTOR, ADDITIVE MANUFACTURING APPARATUS AND METHOD FOR CALIBRATING THE SAME

Номер: US20220143709A1
Автор: Ekberg Christian
Принадлежит: ARCAM AB

The present specification relates to an additive manufacturing apparatus comprising an X-ray reference object () for calibrating an electron beam unit in the additive manufacturing apparatus by detecting X-rays generated by sweeping an electron beam from the electron beam unit over a reference surface () of the X-ray reference object () and processing the detected signals, the X-ray reference object () comprising a support body () that has a top surface () and comprises a plurality of holes () in the top surface (), The X-ray reference object () comprises a plurality of target members () inserted into the plurality of holes () of the support body (). The present specification also relates to an X-ray detector to be used in the additive manufacturing apparatus, and to a method for calibrating such an additive manufacturing apparatus. 11811619181820211822. An X-ray reference object () for calibrating an electron beam unit in an additive manufacturing apparatus () by detecting X-rays generated by sweeping an electron beam () from the electron beam unit over a reference surface () of the X-ray reference object () and processing the detected signals , the X-ray reference object () comprising a support body () that has a top surface () , wherein the X-ray reference object () comprises a plurality of recesses/holes () in at least one surface of the support body.218. The X-ray reference object () according to claim 1 , wherein the X-ray reference object is attached to a rake of the additive manufacturing apparatus.318. The X-ray reference object () according to claim 2 , wherein the rake is movable.418. The X-ray reference object () according to claim 2 , wherein the object is adjustably and selectively removably attached to the rake.518. The X-ray reference object () according to claim 1 , wherein the X-ray reference object is an integrated portion of a rake of the additive manufacturing apparatus.618. The X-ray reference object () according to claim 5 , wherein the at ...

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Номер записи: 54
12-05-2022 дата публикации

METHOD AND APPARATUS FOR PROVIDING ILLUMINATION IN AN ADDITIVE MANUFACTURING PROCESS

Номер: US20220143744A1
Автор: HELLGREN Jonas
Принадлежит: ARCAM AB

An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts corresponds to successive cross sections of the three-dimensional article, the apparatus comprising: a powder distributor configured for evenly distributing a layer of powder on top of a work table provided inside a build chamber; and at least one high energy beam source emanating at least one high energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, wherein the apparatus further comprising at least one target area arranged spaced apart from the layer of powder for emanating light when irradiated by the at least one high energy beam. 1. An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed , which parts corresponds to successive cross sections of the three-dimensional article , the apparatus comprising:a powder distributor configured for evenly distributing a layer of powder on top of a work table provided inside a build chamber; andat least one high energy beam source emanating at least one high energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, 'the apparatus further comprises at least one target area arranged spaced apart from the layer of powder for emanating light when irradiated by the at least one high energy beam.', 'wherein2. The apparatus of claim 1 , wherein the target area is made of a phosphorescent material or a fluorescent material.3. The apparatus of claim 1 , wherein the target area is made of material having a melt point above 1000° C.4. The apparatus of claim 1 , wherein the target area is attached to the powder distributor or any other movable object.5. The apparatus of claim 1 , wherein the target area is attached inside of a heat shield provided between the powder layer and the at ...

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Номер записи: 55
12-05-2022 дата публикации

Additive manufacturing method and device for ceramic and composite thereof

Номер: US20220143868A1
Автор: Cheng Yang, Guilan Wang, Hai'ou Zhang, Xiaoqi Hu
Принадлежит: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Additive manufacturing (AM) methods and devices for high-melting-point materials are disclosed. In an embodiment, an additive manufacturing method includes the following steps. (S1) Slicing a three-dimensional computer-aided design model of a workpiece into multiple layers according to shape, thickness, and size accuracy requirements, and obtaining data of the multiple layers. (S2) Planning a forming path according to the data of the multiple layers and generating computer numerical control (CNC) codes for forming the multiple layers. (S3) Obtaining a formed part by preheating a substrate, performing a layer-by-layer spraying deposition by a cold spraying method, and heating a spray area to a temperature until the spraying deposition of all sliced layers is completed. (S4) Subjecting the formed part to a surface modification treatment by a laser shock peening method.

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Номер записи: 56
28-03-2019 дата публикации

Additive manufacturing in situ stress relief

Номер: US20190091803A1
Автор: Wendell V. Twelves
Принадлежит: United Technologies Corp

An additive manufacturing system includes a build plate; a deposition system operable to dispense material as a melt pool to grow a workpiece on the build plate; a sensor system operable to determine a temperature of the workpiece being grown on the build plate adjacent to the melt pool; and a heater system operable to selectively heat the workpiece between the melt pool and the build plate.

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Номер записи: 57
28-03-2019 дата публикации

Selecting a task in additive manufacturing

Номер: US20190091937A1
Автор: David Ramirez Muela, Salvador SANCHEZ RIBES, Sergio PUIGARDEU ARAMENDIA
Принадлежит: Hewlett Packard Development Co LP

In an example, a method of controlling an additive manufacturing apparatus to generate a three dimensional object comprises processing successive layers of build material so as to form successive layers of a three dimensional object, wherein the processing of each layer is performed within a predetermined layer processing time by a plurality of components. The method may further include selecting, by at least one processor, from a plurality of ancillary tasks, at least one ancillary task to be performed in relation to at least one component of the plurality of components. The method may further include scheduling, by at least one processor, the at least one ancillary task to be performed in relation to the at least one component within the predetermined layer processing time for a single layer or for multiple layers of the build material.

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Номер записи: 58
02-06-2022 дата публикации

Z-AXIS MEASUREMENT AND CONTROL IN 3D PRINTING OF METAL

Номер: US20220168812A1
Автор: Gibson Mark Gardner
Принадлежит: Desktop Metal, Inc.

Disclosed is the measurement and control of height in the Z-axis of layers produced in an additive manufacturing process. The height of layers being deposited can be monitored, which may involve the use of a fiducial tower to measure a global errors or optical or other means to measure layers on a layer-by-layer basis. Droplet size, pitch and other conditions may be modified to ameliorate or correct detected errors. 1. A method for accommodating tool path length during additive manufacturing , comprising the steps of:determining a tool path length for a layer of build material to be deposited;dividing the tool path length by a drop pitch to determine a droplet count;rounding the droplet count to an integer;determining an updated drop pitch according to the integer; anddepositing the layer of build material using the updated drop pitch.2. The method of wherein the droplet count is rounded to the nearest integer.3. The method of further comprising rounding a second droplet count in the opposite direction of the droplet count to determine a second integer.4. A method for adjusting a Z-axis height of layers during additive manufacturing claim 2 , comprising the steps of:depositing a first layer of a build material at a first droplet pitch;profiling the first layer to identify at least one Z-axis height defect in the first layer;depositing at least a portion of a second layer of the build material at a second droplet pitch to correct the Z-axis height defect.5. The method of wherein the step of profiling the first layer includes scanning a top surface of the first layer using a laser point scanner.6. The method of wherein the step of profiling the first layer includes scanning a top surface of the first layer using a laser line scanner.7. The method of wherein the step of profiling the first layer includes scanning a top surface of the first layer using a camera.8. The method of wherein the camera is autofocused and is mechanically scanned across the first layer.9. The ...

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Номер записи: 59
02-06-2022 дата публикации

MONITORING AND PROCESS CONTROL OF THE ADDITIVE MANUFACTURE OF A WORKPIECE

Номер: US20220168840A1
Автор: ENGEL Thomas, Goldammer Matthias, Graichen Andreas, OTTE CLEMENS, Reitinger Axel
Принадлежит:

In order to allow real-time monitoring of a tracing process during additive manufacture, a device is disclosed for the additive manufacture of a workpiece. A scanning unit () is designed to direct a fusing beam () onto a tracing spot (). The device also has a local-resolution optical detector (), a control unit () and an imaging unit (). The imaging unit () is designed to image a portion () of the tracing surface () on the detector (). The control unit () is designed to control the device in order to change the position of the portion () during manufacture. 1. A device for additive manufacture of a workpiece , the device comprising:a scanning unit configured to direct a fusing beam onto a tracing point on a tracing surface;a light-field camera that has a spatially resolving optical detector;an imaging unit configured and arranged to image a subregion of the tracing surface at least two-dimensionally using the spatially resolving optical detector, the spatially resolving optical detector being configured to generate at least one detector signal based on the image of the subregion;a control unit configured to activate the device to change a position of the subregion during manufacture; andan evaluating unit configured to evaluate, process, or evaluate and process the at least one detector signal.2. The device of claim 1 , wherein the imaging unit includes a beam splitter that is arranged on an input side of the scanning unit in a beam path of the fusing beam.3. The device of claim 1 , wherein the imaging unit includes an actuator configured to readjust the spatially resolving optical detector claim 1 , a lens system of the imaging unit claim 1 , or the spatially resolving optical detector and the lens system of the imaging unit in a way corresponding to a deflection of the fusing beam by the scanning unit for the imaging of the subregion.4. The device of claim 1 , further comprising an illuminating device configured to at least partially illuminate the subregion.5. ...

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Номер записи: 60
21-04-2016 дата публикации

Three dimensional printer

Номер: US20160107232A1
Автор: Shuji Okazaki, Tsuyoshi Saito
Принадлежит: Sodick Co Ltd

A lamination molding apparatus capable of supplying a material powder steadily to a recoater head, is provided. A lamination molding apparatus including a chamber covering a desired molding region and being filled with an inert gas having a desired concentration; a recoater head moving in the chamber to supply a material powder on the molding region to form a material powder layer; and a material supplying unit to supply the material powder to the recoater head; wherein the recoater head includes a material holding section to hold the material powder; and a material discharging opening to discharge the material powder in the material holding section.

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Номер записи: 61
02-06-2022 дата публикации

Production Method of Self-Magnetised Net-Shape Permanent Magnets by Additive Manufacturing

Номер: US20220172889A1
Автор: Eric Denervaud, Jacim Jacimovic, Lavinia Scherf, Lorenz Herrmann, Reto Kessler, Thomas Christen
Принадлежит: ABB Schweiz AG

A method of producing a permanent magnet includes forming a magnetisable workpiece by additive manufacturing and forming the permanent magnet by partitioning the magnetisable workpiece. The additive manufacturing includes steps of forming a first powder layer by depositing a first powder, the first powder being ferromagnetic; forming a first workpiece layer of the magnetisable workpiece by irradiating a predetermined first area of the first powder layer by means of a focused energy beam to fuse the first powder in the first area; and repeating the above steps multiple times to form further workpiece layers of the magnetisable workpiece. The permanent magnet is formed by partitioning the magnetisable workpiece, where an exposed surface of the permanent magnet formed by the partitioning is non-parallel to the first workpiece layer, and where the permanent magnet produces an external magnetic field having a magnetic field strength of at least 1 kA/m.

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Номер записи: 62
11-04-2019 дата публикации

Optical Powder Spreadability Sensor and Methods for Powder-Based Additive Manufacturing

Номер: US20190105843A1
Автор: Ankit Saharan, Erling Richard LaSalle, III
Принадлежит: EOS of North America Inc

Disclosed is an apparatus for and method of determining spreading behavior of a powder material during an additive manufacturing process. The method deposits a powder mound, moves a spreader to distribute a layer of powder over a build supported on a build area, operates an energy source to cast intercept the powder mound in the path of the source and onto an optical sensor during displacement of the powder mound, and analyzes an output of the optical sensor to identify features relating to the spreading behavior of the powder.

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Номер записи: 63
26-04-2018 дата публикации

Operation of three-dimensional printer components

Номер: US20180111319A1
Автор: Alexander Brudny, Daniel Thomas CHRISTIANSEN, Thomas Blasius Brezoczky
Принадлежит: Velo3D Inc

The present disclosure provides three-dimensional (3D) printing systems, apparatuses, methods and non-transitory computer readable media for the production of at least one desired 3D object. The 3D printer described herein comprises, inter alia, an opening that comprises a first side and a second side. A component of the 3D printing, such as a layer dispenser, may be conveyed from the first side of the opening to the second side of the opening (e.g., and vice versa) during the 3D printing. The opening may be closable. A closure of the opening may seclude the component during at least a portion of the 3D printing. Additional features relating to components of the 3D printing systems are described herein.

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Номер записи: 64
09-06-2022 дата публикации

BUILD SYSTEM

Номер: US20220176453A1
Автор: Matsuda Takeshi
Принадлежит: NIKON CORPORATION

A build system is a build system that builds a build object on an object and is provided with a display apparatus that display an image relating to the object; and a build apparatus that builds the build object on the object on the basis of a designated position that is designated by using the image displayed by the display apparatus. 1. A build system that builds a build object on an object ,the build system comprising:a display apparatus that displays an image relating to the object; anda build apparatus that builds the build object on the object on the basis of a designated position that is designated by using the image displayed by the display apparatus.2. The build system according to claim 1 , whereinthe build system comprises an input apparatus into which information for designating the designated position on the object is inputted.3. The build system according to claim 2 , whereinthe input apparatus allows the information to be inputted on a screen in which the image is displayed.4. The build system according to claim 2 , whereinthe input apparatus comprises a keyboard into which the information is inputted.5. The build system according to claim 2 , whereininformation relating to a 3D model of the build object is inputted into the input apparatus,the display apparatus displays the designated position associated with the 3D model.6. The build system according to claim 1 , whereinthe build apparatus comprises a supply apparatus that supplies materials to a build position,a positional relationship between the designated position and the build position is a predetermined relationship.7. The build system according to claim 1 , whereinthe build apparatus comprises a supply apparatus that supplies materials to a build position,the designated position is the build position.8. The build system according to claim 6 , whereinthe build apparatus comprises a beam irradiation apparatus that irradiates the build position with an energy beam.9. The build system according to ...

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Номер записи: 65
09-06-2022 дата публикации

Spectral Emissivity and Temperature Measurements of Metal Powders during Continuous Processing in Powder Bed Fusion Additive Manufacturing

Номер: US20220176455A1
Автор: Alfonso Fernandez, Cesar A. Terrazas-Najera, Ralph Felice, Ryan B. Wicker
Принадлежит: University of Texas System

A method of measuring spectral emissivity of materials is provided. The method comprises placing material in a controlled chamber and exposing the material to an energy source to heat the material. At least one multi-wavelength pyrometer measures emitted thermal radiation from the material produced by heating by the energy source.

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Номер записи: 66
09-06-2022 дата публикации

CONTACT DETECTION IN ADDITIVE MANUFACTURING

Номер: US20220176456A1
Автор: RIEMANN Jeffrey L.
Принадлежит:

Certain aspects of the present disclosure provide a method for setting a working distance of an additive manufacturing system, including: moving a deposition element towards a build surface; detecting, via a contact detection system, a contact between the deposition element and the build surface; stopping the moving of the deposition element in response to detecting the contact between the deposition element and the build surface; and moving the deposition element away from the build surface a determined working distance. 1. A method for setting a working distance of an additive manufacturing system , comprising:moving a deposition element towards a build surface;detecting, via a contact detection system, a contact between the deposition element and the build surface;stopping the moving of the deposition element in response to detecting the contact between the deposition element and the build surface; andmoving the deposition element away from the build surface a determined working distance.2. The method of claim 1 , wherein detecting via the contact detection system the contact between the deposition element and the build surface comprises detecting a change in an electrical measurement caused by the contact between the deposition element and the build surface.3. The method of claim 2 , wherein an electrical circuit is formed between the contact detection system claim 2 , the deposition element claim 2 , and the build surface based on the contact between the deposition element and the build surface.4. The method of claim 2 , wherein the electrical measurement comprises one of an electrical resistance or an electrical impedance.5. The method of claim 2 , wherein the electrical measurement comprises an electrical continuity.6. The method of claim 1 , wherein detecting via the contact detection system the contact between the deposition element and the build surface comprises determining a deflection within a compliance component attached between a process motion ...

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Номер записи: 67
09-06-2022 дата публикации

ACCESSORY DEVICE FOR A SOLID-STATE ADDITIVE MANUFACTURING SYSTEM ENABLING PRINTING OF LARGE AND COMPLEX PARTS

Номер: US20220176633A1
Автор: Cox Chase, Garguilo Christopher, Hardwick Nanci, Lalande Frederic, Lettery Joseph
Принадлежит:

An accessory device used in combination with a solid-state additive manufacturing system is described. In some configurations, the accessory device can be used in combination with an additive manufacturing system, such as a solid-state additive manufacturing system, to enable printing of large-scale and complex objects, where the objects are much larger than those printed with existing solid-state manufacturing systems. The disclosed accessory device used in conjunction with the a solid-state additive manufacturing system is capable of manufacturing non-hollow (solid), partially-hollow or completely-hollow objects via different methods. 1. A solid state additive manufacturing system comprising:a material feed system;tooling configured to receive material from the material feed system and print the received material on a substrate;an accessory device configured to receive the substrate, anda processor electrically coupled to the tooling and the device, wherein the processor is programmed to control the tooling and to control movement of the device to print the received material onto the received substrate on the device to form a printed part.2. The solid state additive manufacturing system of claim 1 , wherein the accessory device is configured to move and/or rotate the printed part in x- claim 1 , y- and/or z-direction claim 1 , or any combination of them.3. The solid state additive manufacturing system of claim 1 , wherein the tooling can move in 3-dimensions to print the material onto the substrate and form the printed part.4. The solid state additive manufacturing system of claim 1 , wherein the accessory device comprises one or more of a robotic arm claim 1 , a gantry claim 1 , a moving frame claim 1 , a crane claim 1 , a parallel manipulator and combinations thereof.5. The solid state additive manufacturing system of claim 1 , further comprising heating means or cooling means for heating or cooling the substrate claim 1 , respectively claim 1 , and/or for ...

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Номер записи: 68
13-05-2021 дата публикации

POWDER TRANSPORT CONTAINER

Номер: US20210138553A1
Автор: Deffley Rob James, FERRAR Ben Ian
Принадлежит: LPW Technology Ltd.

A container () adapted to store a quantity of metal powder (), the container () comprising a container body having an opening and a sensing device () for sensing the temperature of the powder () and/or the humidity level inside the container (), wherein a first reading received from the sensing device () is compared to a second reading received from a second sensing device configured to sense the temperature and/or humidity level of an environment outside of the container, and based on the first reading and the second reading, a user is provided within an indication about whether the container can be opened. 1. A container adapted to store a quantity of metal powder , the container comprising:a container body having an opening anda sensing device for sensing the temperature of the powder and/or the humidity level inside the container, wherein a first reading received from the sensing device is compared to a second reading received from a second sensing device configured to sense the temperature and/or humidity level of an environment outside of the container, and wherein the container is configured to communicate with the nearest available second sensing device attached to a surface of a confined environment, and based on the first reading and the second reading, a user is provided within an indication about whether the container can be opened.2. (canceled)3. A container according to claim 1 , wherein the container comprises a lid and the sensing device is attached to an inner surface of the lid or to a limb which depends from the inner surface of the lid.4. (canceled)5. A container according to claim 1 , wherein the sensing device is attached to an inner surface of the container body.6. A container according to claim 1 , wherein the container comprises a part-conical body portion.7. A container according to claim 4 , wherein the sensing device is provided in the part-conical body portion of the container.8. A container according to claim 1 , comprising an outlet ...

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Номер записи: 69
09-04-2020 дата публикации

Three-dimensional, additive manufacturing system, and a method of manufacturing a three-dimensional object

Номер: US20200108553A1
Автор: Philip E. Rogren
Принадлежит: Keracel Inc

A three-dimensional, additive manufacturing system is disclosed. The first and second printer modules form sequences of first patterned single-layer objects and second patterned single-layer objects on the first and second carrier substrates, respectively. The patterned single-layer objects are assembled into a three-dimensional object on the assembly plate of the assembly station. A controller controls the sequences and patterns of the patterned single-layer objects formed at the printer modules, and a sequence of assembly of the first patterned single-layer objects and the second patterned single-layer objects into the three-dimensional object on the assembly plate. The first transfer module transfers the first patterned single-layer objects from the first carrier substrate to the assembly apparatus in a first transfer zone and the second transfer module transfers the second patterned single-layer objects from the second carrier substrate to the assembly apparatus in a second transfer zone. The first and second printer modules are configured to deposit first and second materials under first and second deposition conditions, respectively. The first and second materials are different and/or the first and second deposition conditions are different.

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Номер записи: 70
09-04-2020 дата публикации

Real-time resonant inspection for additive manufacturing

Номер: US20200108594A1
Автор: Jinquan Xu
Принадлежит: Raytheon Technologies Corp

An additive manufacturing system comprises an additive manufacturing tool, a sensor, and a controller. The additive manufacturing tool is disposed to construct a workpiece via iterative layer deposition. The sensor is disposed to determine a resonant frequency of the workpiece in-situ at the additive manufacturing tool, during fabrication. The controller is configured to terminate manufacture of the workpiece if the resonant frequency differs substantially from a reference frequency.

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Номер записи: 71
04-05-2017 дата публикации

Methods and Systems for Coherent Imaging and Feedback Control for Modification of Materials

Номер: US20170120337A1
Автор: James M. Fraser, Jordan Kanko, Paul J.L. Webster, Victor X.D. Yang
Принадлежит: Queens University at Kingston

Methods and systems are provided for using optical interferometry in the context of material modification processes such as surgical laser, sintering, and welding applications. An imaging optical source that produces imaging light. A feedback controller controls at least one processing parameter of the material modification process based on an interferometry output generated using the imaging light. A method of processing interferograms is provided based on homodyne filtering. A method of generating a record of a material modification process using an interferometry output is provided.

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Номер записи: 72
04-05-2017 дата публикации

Part Manipulation Using Printed Manipulation Points

Номер: US20170120387A1
Автор: Erik Toomre, Eugene Berdichevsky, Francis L. Leard, Heiner Fees, James A. DEMUTH, Kourosh Kamshad
Принадлежит: Seurat Technologies Inc

A manipulator device such as a robot arm that is capable of increasing manufacturing throughput for additively manufactured parts, and allows for the manipulation of parts that would be difficult or impossible for a human to move is described. The manipulator can grasp various permanent or temporary additively manufactured manipulation points on a part to enable repositioning or maneuvering of the part.

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Номер записи: 73
03-05-2018 дата публикации

In-Process Quality Assessment for Additive Manufacturing

Номер: US20180120260A1
Автор: Neil J. Goldfine, Todd M. Dunford
Принадлежит: Jentek Sensors Inc

Disclose is a system and method for real-time measurement and feedback of metrology and metallurgical data during additive manufacturing (AM) part fabrication. This solution promises to provide higher performance, lower cost AM parts. A sensor is placed either in the rake/roller or following the rake/roller so that it has no impact on the process efficiency and can be used to provide real-time feedback and an archived digital map of the entire part volume. The solution provides non-contact sensing of AM layer's electrical conductivity in a high-temperature environment, metallurgical property verification, porosity imaging, local defect detection and sizing, local material temperature monitoring, and grain anisotropy imaging. Part geometry, the AM powder, and the laser/material interface are monitored in real-time. Dual mode sensing using magnetoquasistatic and optical sensors enhance results. Real-time nonlinear control of the AM fabrication process is performed based on the sensor data.

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Номер записи: 74
25-08-2022 дата публикации

GASEOUS IONIZATION DETECTORS FOR MONITORING AND CONTROLLING ENERGY BEAMS USED TO ADDITIVELY MANUFACTURE THREE-DIMENSIONAL OBJECTS

Номер: US20220266340A1
Автор: Bartosik David Alan, Spears Thomas Graham
Принадлежит:

An additive manufacturing machine may include a beam source, a process chamber, a beam column operably coupled to the process chamber and/or defining a portion of the process chamber, and a gaseous ionization detector disposed about the beam column. The gaseous ionization detector may be configured to detect elementary particles corresponding to an ionizing gas ionized by an energy beam from the beam source. A method of additively manufacturing a three-dimensional object may include determining data from a gaseous ionization detector disposed about a beam column of an additive manufacturing machine, and additively manufacturing a three-dimensional object using the additive manufacturing machine based at least in part on the data from the gaseous ionization detector. A computer-readable medium may include computer-executable instructions, which when executed by a processor associated with an additive manufacturing machine, cause the additive manufacturing machine to perform a method in accordance with the present disclosure. 1. An additive manufacturing machine , comprising:a beam source;a process chamber;a beam column operably coupled to the process chamber and/or defining a portion of the process chamber; anda gaseous ionization detector disposed about the beam column, the gaseous ionization detector configured to detect elementary particles corresponding to an ionizing gas ionized by an energy beam from the beam source.2. The additive manufacturing machine of claim 1 , comprising:one or more electrostatic lenses disposed about the beam column; anda control system;wherein the control system comprises a control module configured to control the one or more electrostatic lenses based at least in part on data from the gaseous ionization detector.3. The additive manufacturing machine of claim 2 , wherein the one or more electrostatic lenses comprises: an astigmatism lens claim 2 , a focusing lens claim 2 , and/or a deflection lens.4. The additive manufacturing machine ...

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Номер записи: 75
25-08-2022 дата публикации

Method of determining a tool path for controlling a printing tool

Номер: US20220266342A1
Автор: Alejandro VARGAS USCATEGUI, Peter King
Принадлежит: Commonwealth Scientific and Industrial Research Organization CSIRO

A method of determining a tool path for controlling a printing tool, including step (401) of receiving an input file containing data indicative of a three-dimensional structure to be formed. At step (404) the structure is divided into a plurality of build layers, which are separated in a build direction and each layer extends laterally relative to the build direction. Each layer includes an external contour defining the intersection of the layer with an exterior surface of the three-dimensional structure. Step (405) defines a tool path, which fills the three-dimensional structure, wherein the path includes partially filling one or more higher build layers along the build direction before entirely filling at least one lower build layer. At step (406), a printing tool control algorithm is generated that includes a series of control commands for controlling the printing tool to move along the tool path to form the three-dimensional structure.

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Номер записи: 76
25-08-2022 дата публикации

ULTRASONIC SENSOR BASED IN-SITU DIAGNOSTICS FOR AT LEAST ONE OF ADDITIVE MANUFACTURING AND 3D PRINTERS

Номер: US20220266390A1
Автор: JIN Yuqi, Neogi Arup, Yang Teng
Принадлежит:

A monitoring technique for a melting process including monitoring a melt pool produced by a heat source during the melting process, the monitoring comprising measuring ultrasonic time of flight of the melt pool via one or more ultrasonic transducers, wherein the melt pool comprises one or more metals, alloys, or a combination thereof. A system for carrying out the monitoring technique, and melting processes and systems utilizing the monitoring technique are also provided. 1. A monitoring technique for a melting process , the monitoring technique comprising:monitoring a melt pool produced by a heat source during the melting process, the monitoring comprising measuring an ultrasonic time of flight of the melt pool via one or more ultrasonic transducers, wherein the melt pool comprises one or more metals, alloys, or a combination thereof.2. The monitoring technique of claim 1 , wherein the one or more metals claim 1 , alloys claim 1 , or a combination thereof is gallium claim 1 , aluminum claim 1 , magnesium claim 1 , lithium claim 1 , stainless steel claim 1 , titanium claim 1 , one or more alloys of gallium claim 1 , aluminum claim 1 , magnesium claim 1 , lithium claim 1 , a stainless steel claim 1 , titanium claim 1 , or a combination thereof.3. The monitoring technique of claim 1 , wherein the melting process comprises a laser welding process claim 1 , a laser metal additive manufacturing process claim 1 , or a melt and solidify loop process.4. The monitoring technique of claim 3 , wherein the melting process comprises a three-dimensional 3D metal printing or additive manufacturing process.5. The monitoring technique of claim 1 , wherein the melting process is a femtosecond laser aided selective area melting process.6. The monitoring technique of claim 1 , wherein the heat source comprises a laser claim 1 , and wherein the laser is a near-infrared femtosecond laser having a sub 100 femtosecond pulse width.7. The monitoring technique of claim 1 , wherein measuring ...

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Номер записи: 77
25-08-2022 дата публикации

Energy dissipative nozzles for drop-on-demand printing and methods thereof

Номер: US20220266512A1
Автор: Adrian Lew, Christoforos Somarakis, Saigopal Nelaturi, Svyatoslav Korneev
Принадлежит: Palo Alto Research Center Inc

A nozzle for a printing system is disclosed. The nozzle includes a tank in communication with a source of printing material. The nozzle also includes a constricted dissipative section in communication with the tank, which may include an elongated internal channel. The nozzle may also include a shaping tip in communication with the constricted dissipative section may include an exit orifice. The constricted dissipative section may be axisymmetric and may include at least three internal channels not in communication with one another. Also disclosed is an array of nozzles for a printing system including a plurality of nozzles, with each nozzle including a tank in communication with a source of printing material, a constricted dissipative section in communication with the tank and configured to obstruct fluid flow and having an elongated internal channel, and a shaping tip in communication with the constricted dissipative section may include an exit orifice.

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Номер записи: 78
25-08-2022 дата публикации

In situ thermo acoustic non-destructive testing during three-dimensional printing

Номер: US20220266522A1
Автор: Kent Evans, Warren Jackson
Принадлежит: Palo Alto Research Center Inc

An apparatus has an additive manufacturing system configured to deposit material in layers to form a three-dimensional object on a surface, an energy source positioned adjacent the object positioned such that energy from the source reaches the object, a detector to receive energy reflected from the object, and a controller configured to activate the energy source and receive signals from the detector as each layer is deposited. A method of monitoring an additive manufacturing process includes depositing material in a layer on a surface to form a three-dimensional object, activating an energy source located adjacent the surface, detecting reflections of the energy from the object, analyzing the reflections to determine an integrity of the object, and providing a notification when the integrity of the object does not meet a threshold.

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Номер записи: 79
25-04-2019 дата публикации

Apparatus for additively manufacturing of three-dimensional objects

Номер: US20190118482A1
Автор: Domenik Braunroth
Принадлежит: CONCEPT LASER GMBH

Apparatus ( 1 ) for additively manufacturing of three-dimensional objects ( 2 ) by means of successive layerwise selective irradiation and consolidation of layers of build material ( 3 ) which can be consolidated by means of an energy beam ( 4 ), the apparatus ( 1 ) comprising: —at least one build plate ( 5 ), the build plate ( 5 ) being moveably supported in at least one degree of freedom of motion; and/or—at least one build material application element ( 7, 7 a, 7 b ), particularly a coating element, the build material application element ( 7, 7 a, 7 b ) being moveably supported; —at least one optical device ( 16 ), the optical device ( 16 ) being adapted to optically determine the orientation and/or position of the build plate ( 5 ) and/or the build material application element ( 7, 7 a, 7 b ) relative to a reference plane (RP).

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Номер записи: 80
25-08-2022 дата публикации

Transport of powders

Номер: US20220267085A1
Автор: Ben FERRAR, Philip CARROLL, Robert Deffley
Принадлежит: LPW Technology Ltd

A powder container (10) comprising a pressure vessel (12) for containing a quantity of powder (14) and a quantity of pressurised gas (32), an outlet through which, in use, the powder (14) can flow out of the pressure vessel (12), and an outlet valve (24) for selectively opening and closing the outlet, wherein the container (10) further comprises a data sensing and/or logging means (56, 58, 60, 62, 64) adapted to monitor and/or log various parameters of the powder (14) and/or the pressurised gas (32) and further comprising a control unit (54) adapted record and log the sensor readings either continuously, or at intervals, the control unit (54) comprising a communications module adapted to relay sensor readings, or log files, to a remote monitoring station.

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Номер записи: 81
14-05-2015 дата публикации

METHOD FOR PRODUCING LOW-PRESSURE TURBINE BLADES FROM TiAl

Номер: US20150129583A1
Автор: Herbert Hanrieder, Karl-Hermann Richter
Принадлежит: MTU Aero Engines AG

The invention relates to a method for producing a low-pressure turbine blade from a TiAl material by means of a selective laser melting process, wherein during production in the selective laser melting process the already partially manufactured low-pressure turbine blade is preheated by inductive heating, and wherein the selective laser melting process is carried out under protective gas, the protective gas atmosphere containing contaminants of oxygen, nitrogen, and water vapor in each case of less than or equal to 10 ppm.

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Номер записи: 82
04-05-2017 дата публикации

Light recycling for additive manufacturing optimization

Номер: US20170123237A1
Автор: Erik Toomre, Eugene Berdichevsky, Francis L. Leard, Heiner Fees, James A. DEMUTH, Kourosh Kamshad
Принадлежит: Seurat Technologies Inc

A method and an apparatus pertaining to recycling and reuse of unwanted light in additive manufacturing can multiplex multiple beams of light including at least one or more beams of light from one or more light sources. The multiple beams of light may be reshaped and blended to provide a first beam of light. A spatial polarization pattern may be applied on the first beam of light to provide a second beam of light. Polarization states of the second beam of light may be split to reflect a third beam of light, which may be reshaped into a fourth beam of light. The fourth beam of light may be introduced as one of the multiple beams of light to result in a fifth beam of light.

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Номер записи: 83
27-05-2021 дата публикации

BUILD PLATFORM AND POWDER TRANSER SYSTEM FOR ADDITIVE MANUFACTURING

Номер: US20210154744A1
Автор: ISHIKAWA David Masayuki
Принадлежит:

An additive manufacturing system includes a factory interface chamber, a load lock chamber, a first valve to fluidically seal the factory interface chamber from the load lock chamber, an additive manufacturing chamber including a dispensing system to deliver a plurality of layers of a powder to a build platform and an energy source to apply energy to the powder dispensed on the top surface of the build platform, at least a second valve to fluidically seal the load lock chamber from the additive manufacturing chamber, and a plurality of supports and actuators that provide a transport tool to carry the build platform from the factory interface unit, through the load lock chamber, to the additive manufacturing chamber, and back to the factory interface chamber. 1. An additive manufacturing system , comprising:a factory interface chamber;a load lock chamber;a first valve to fluidically seal the factory interface chamber from the load lock chamber;an additive manufacturing chamber including a dispensing system to deliver a plurality of layers of a powder to a build platform, and an energy source to apply energy to the powder dispensed on the top surface of the build platform;at least a second valve to fluidically seal the load lock chamber from the additive manufacturing chamber; anda plurality of supports and actuators that provide a transport tool to carry the build platform from the factory interface unit, through the load lock chamber, to the additive manufacturing chamber, and back to the factory interface chamber.2. The system of claim 1 , wherein the transport tool comprises a transport track to carry the build platform.3. The system of claim 1 , comprising a transfer chamber between the load lock chamber and the additive manufacturing chamber claim 1 , and the transport tool is configure to carry the build platform from the factory interface unit claim 1 , through the load lock chamber and the transfer chamber claim 1 , to the additive manufacturing chamber claim ...

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Номер записи: 84
27-05-2021 дата публикации

METHOD AND SYSTEM FOR MANUFACTURING A COMPONENT USING AN ADDITIVE PROCESS

Номер: US20210154745A1
Автор: LANY Marc, MONNIER Frédéric, REVAZ Bernard, SANTI Gilles, SPIERINGS Adrian, STAUB Alexandre, STOLL Philipp
Принадлежит:

The invention concerns a method for additive manufacturing a component by repetitively superposing and solidifying material layers according to a 3D model of the component. The method comprises the steps of scan, by means of an eddy current sensing unit (), of a new solidified cross section () obtained by selectively solidifying a material layer so as to provide an integrity data (VMM) of a sensed portion (). A difference between the sensed integrity data (VMM) and an expected integrity data (VEE) is then executed for detecting a manufacturing anomaly within this portion. The expected integrity data (VEE) is determined based on collected integrity data of a solid basic structure likely matching or being identical to a geometrical structure () obtained from the 3D model () of a portion corresponding to said sensed portion (), said solid basic structure being manufactured or simulated according to another 3D model. 2. The method according to claim 1 , wherein the expected integrity data is also determined based on a response and/or transfer function of said eddy current sensing unit.3. Method according to claim 1 , wherein said step of determining the expected integrity data further comprises a step of:searching within a catalogue of predefined solid basic structures for said solid basic structure matching said geometrical structure, each predefined solid basic structure being provided with collected integrity data.4. Method according to claim 1 , wherein said collected integrity data comprises:a map resulting from a scan of the solid basic structure exhibited by a reference object by means of an eddy current sensing unit; and/ora simulation map obtained by simulating a scan of the solid basic structure by an eddy current sensing unit.5. The method according to claim 3 , whereineach of the solid basic structures of the catalogue concerns a distinct material, a distinct surface pattern and/or a distinct geometric dimension thereof;preferably the surface pattern ...

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Номер записи: 85
27-05-2021 дата публикации

THREE-DIMENSIONAL POWDER BED FUSION ADDITIVE MANUFACTURING APPARATUS AND THREE-DIMENSIONAL POWDER BED FUSION ADDITIVE MANUFACTURING METHOD

Номер: US20210154764A1
Автор: Kitamura Shinichi, Sato Takashi, Tsutagawa Nari
Принадлежит:

A three-dimensional powder bed fusion additive manufacturing apparatus includes: a base plate; a Z drive mechanism configured to move the base plate in a vertical direction; a powder supplier configured to supply a powder sample onto the base plate to laminate a powder layer; an electron gun configured to generate a beam to be irradiated to the powder layer; a controller configured to control the Z drive mechanism, the powder supplier, and the electron gun to irradiate the beam to a powder bed that is an uppermost layer of the powder layer and perform melting on a two-dimensionally shaped region in which a shaped model is sliced by one layer to shape a three-dimensionally shaped object; and two segment detectors configured to detect a state of the powder bed. 1. A three-dimensional powder bed fusion additive manufacturing apparatus comprising:a base plate;a driving unit configured to move the base plate in a vertical direction;a powder supplier configured to supply a powder sample onto the base plate to laminate a powder layer;a beam generator configured to generate a beam to be irradiated to the powder layer;a controller configured to control the driving unit, the powder supplier, and the beam generator to irradiate the beam to a powder bed that is an uppermost layer of the powder layer and perform melting on a two-dimensionally shaped region in which a shaped model is sliced by one layer to shape a three-dimensionally shaped object; anda detector configured to detect a state of the powder bed.2. The three-dimensional powder bed fusion additive manufacturing apparatus according to claim 1 , whereinin a case of determining that the state of the powder bed is not normal from a detection result of the detector, the controller causes the powder supplier to laminate the powder layer again to shape a current layer.3. The three-dimensional powder bed fusion additive manufacturing apparatus according to claim 1 , whereinthe detector detects the state of the powder bed ...

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Номер записи: 86
27-05-2021 дата публикации

Three-Dimensional Shaping Device and Method for Manufacturing Three-Dimensional Shaped Object

Номер: US20210154941A1
Автор: Hiroki Kobayashi, Kazuhide Nakamura, Koichi Saito
Принадлежит: Seiko Epson Corp

A three-dimensional shaping device includes: a discharge unit configured to discharge a shaping material; a weight measuring unit configured to measure a weight of the shaping material discharged from the discharge unit; and a control unit configured to control the discharge unit and the weight measuring unit to shape a three-dimensional shaped object by stacking layers of the shaping material in a shaping region of a stage, in which the control unit is configured to control the weight measuring unit to measure the weight of the shaping material discharged from the discharge unit, determine whether a predetermined amount of the shaping material is discharged from the discharge unit based on the weight measured by the weight measuring unit, and when it is determined that the predetermined amount of the shaping material is not discharged, control the discharge unit so that the predetermined amount of the shaping material is discharged from the discharge unit.

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Номер записи: 87
11-05-2017 дата публикации

Machine to Build Structures

Номер: US20170129133A1
Автор: Edgar Bolivar
Принадлежит: Individual

Disclosed is a machine meant to build structures capable of moving over a surface, having unlimited range, for the purpose of doing tasks involved in the manufacturing of a structure or building: from laying the correct building material, painting, running electrical, installing plumbing, fixtures, doors and windows, carve on surfaces already printed, smooth out built surfaces, or remove the correct amount of material needed to gain the desired effect in a designed product. Meaning that by the time leaves the build area, it is literally ready to move in. The machine to build structures can produce at lower cost, can build with improved quality, at a higher rate of speed than was heretofore possible, with significantly reduced exposure to safety, costs and health hazards associated with this kind of construction activities in the past.

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Номер записи: 88
11-05-2017 дата публикации

Adept three-dimensional printing

Номер: US20170129184A1
Автор: Benyamin Buller, Evgeni Levin, Tasso LAPPAS
Принадлежит: Velo3D Inc

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, systems, and non-transitory computer-readable medium. The disclosure delineates real time manipulation of three-dimensional printing to reduce deformation. The present disclosure further provides 3D object formed using the methods, apparatuses, and systems.

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Номер записи: 89
10-05-2018 дата публикации

Method for the generative production of a three-dimensional component

Номер: US20180128803A1
Автор: Pierre Foret
Принадлежит: Linde GmbH

A method for the generative production of a three-dimensional component in a processing chamber, wherein the steps of providing a metal starting material in the processing chamber and melting the starting material by inputting energy are repeated multiple times, and wherein a process gas is provided in the processing chamber is disclosed. The method provides for the following steps wherein the hydrogen content of the process gases or of a sample of the process gas is determined; the oxygen content of the process gas or of a sample of the process gas is determined by means of an oxygen sensor and/or the dewpoint of the process gases or of a sample of the process gas is determined; and the value determined in step 2 for the oxygen content and/or the dewpoint is/are corrected with the aid of the value for the hydrogen content determined in step 1.

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Номер записи: 90
01-09-2022 дата публикации

BUILD UNIT

Номер: US20220274181A1
Автор: KATO Tasuku
Принадлежит: NIKON CORPORATION

A build unit is provided with: a build apparatus that builds a build object on a base member on the basis of a set position that is set on the base member; and an output apparatus that output position information relating to the set position. 1. A build unit comprising:a build apparatus that builds a build object on a base member on the basis of a set position that is set on the base member; andan output apparatus that outputs position information relating to the set position.2. The build unit according to claim 1 , whereinthe output apparatus outputs the position information to a processing unit that performs a processing operation on the build object.3. The build unit according to claim 2 , whereinthe processing unit performs the processing operation on the basis of the position information outputted from the output apparatus.4. The build unit according to claim 2 , whereinthe processing unit performs an alignment of the build object and the processing unit on the basis of the position information outputted from the output apparatus and performs the processing operation on the basis of a result of the alignment.5. The build unit according to claim 1 , whereinthe build apparatus builds the build object a relative position of which is fixed relative to the base member.6. The build unit according to claim 1 , whereinthe build apparatus builds the build object that is coupled with the base member.7. The build unit according to claim 1 , whereinthe position information includes information relating to a relative position of the set position and the base member.8. The build unit according to claim 1 , whereinthe position information includes information relating to a relative position of the set position and the build object.9. (canceled)10. (canceled)11. The build unit according to claim 8 , whereinthe build apparatus builds the build object on the base member on the basis of a build data,the output apparatus outputs, as the position information, the build data that is ...

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Номер записи: 91
03-06-2021 дата публикации

INTERNAL DEFECT DETECTION SYSTEM, THREE-DIMENSIONAL ADDITIVE MANUFACTURING DEVICE, INTERNAL DEFECT DETECTION METHOD, METHOD OF MANUFACTURING THREE-DIMENSIONAL ADDITIVE MANUFACTURED PRODUCT, AND THREE-DIMENSIONAL ADDITIVE MANUFACTURED PRODUCT

Номер: US20210162508A1
Автор: HARAGUCHI Hidetaka, KITAMURA Masashi, KOEHLER Henry, KONDOU Akio, Narita Ryuichi, TANIGAWA Shuji, THOMY Claus, WATANABE Toshiya
Принадлежит:

A forming defect detection system for a three-dimensional additive manufacturing device which performs additive molding by emitting a laser beam to a powder bed is provided. This system specifies a candidate position of a forming defect on the basis of a change amount of a local temperature measured in an irradiated part of a powder bed irradiated by a laser beam. The system calculates a cooling speed at the candidate position on the basis of a temperature distribution and determines whether a forming defect exists on the basis of the cooling speed. 1. An internal defect detection system for a three-dimensional additive manufacturing device which performs additive molding by emitting a beam to a powder bed , the internal defect detection system comprising:a local-temperature detection sensor for measuring a local temperature of an irradiated part of the powder bed irradiated by the beam;a temperature-distribution detection sensor for detecting a temperature distribution of a detection-target area on the powder bed, the detection-target area including the irradiated part;a candidate-position specification part configured to specify a candidate position of an internal defect inside the detection-target area on the basis of a change amount of the local temperature detected by the local-temperature detection sensor with respect to a position within a surface of the powder bed;a cooling-speed calculation part configured to calculate a cooling speed at the candidate position from the temperature distribution detected by the temperature-distribution detection sensor; anda defect determination part configured to determine whether the internal defect exists at the candidate position on the basis of the cooling speed at the candidate position.2. The internal defect detection system for a three-dimensional additive manufacturing device according to claim 1 ,wherein the candidate-position specification part is configured to specify a position where the change amount is greater ...

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Номер записи: 92
03-06-2021 дата публикации

METHOD AND APPARATUS FOR DETERMINING METAL POWDER CONDITION

Номер: US20210162509A1
Автор: Ferrar Ben, Robinson Ben
Принадлежит:

A method of determining the condition of a metal powder for use in an additive manufacturing process, involving processing an image of the powder to measure a surface property of the powder, such as colour, texture or particle shape. The proportion of powder whose measured surface property falls outside a pre-determined range is determined and can be used to decide whether or not the powder is suitable for re-use. The proportion is determined by identifying individual particles in the image which are identified as statistical outliers amongst all of the particles shown in the image when considering a measured surface property. The relevant proportion may be determined statistically. 1. A method of determining the condition of a metal powder for use in an additive manufacturing process , the method comprising the step of processing an image of the powder.2. A method as claimed in comprising the step of taking the image of the powder.3. A method as claimed in wherein the image is an optical image.4. A method as claimed in wherein the image is processed to measure a surface property of the powder claim 1 , such as colour or texture.5. A method as claimed in comprising the step of cropping the image.6. A method as claimed in comprising the step of checking the quality of the image.7. A method as claimed in wherein the image is formed by claim 1 , or divided into claim 1 , a plurality of image elements.8. A method as claimed in claim 7 , wherein the ratio of image elements in the image to the number of particles in the imaged powder is at least 100:1.9. A method as claimed in wherein image elements having a luminance below a threshold are identified and excluded from further processing.10. A method as claimed in comprising the step of calculating the ratio of image elements above and below the threshold.11. A method as claimed in wherein the image is processed to estimate the total number of particles of powder it shows.12. A method as claimed in where the image is ...

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Номер записи: 93
09-05-2019 дата публикации

Correction of non-imaging thermal measurement devices

Номер: US20190134709A1
Автор: Mark J. Cola, Vivek R. Dave
Принадлежит: Sigma Labs Inc

A system and a corresponding method of correcting temperature data from a non-imaging optical sensor involve collecting temperature data generated using the optical sensor. The temperature data describes temperature changes across a surface of a material during an additive manufacturing operation in which the material is heated by a heat source. The method includes estimating a size of a hot spot corresponding to a hottest region formed on the surface by the heat source; and estimating a size of a heated region corresponding to a locus of points within the field of view that contribute to the temperature data. The method further includes correcting the temperature data based on the estimated sizes of the hot spot and the heated region.

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Номер записи: 94
30-04-2020 дата публикации

Method for controlling deformation and precision of parts in parallel during additive manufacturing process

Номер: US20200130267A1
Автор: Guilan Wang, Haiou Zhang
Принадлежит: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

A method for controlling deformation and precision of a part in parallel during an additive manufacturing process includes steps of: performing additive forming and isomaterial shaping or plastic forming, and simultaneously, performing one or more members selected from a group consisting of isomaterial orthopedic process, subtractive process and finishing process in parallel at a same station, so as to achieve a one-step ultra-short process, high-precision and high-performance additive manufacturing, wherein: performing in parallel at the same station refers to simultaneously implement different processes in a same pass or different passes of different processing layers or a same processing layer when a clamping position of the part to be processed is unchanged. The method can realize the one-step high-precision and high-performance additive manufacturing which has the ultra-short process, has high processing precision, and the parts can be directly applied, so that the method has strong practical application value.

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Номер записи: 95
10-06-2021 дата публикации

Intuitive Creation System for Additive Manufacturing

Номер: US20210170693A1
Автор: Joseph Matthew Sinclair
Принадлежит: Individual

Described herein is an Intuitive Creation System for Additive Manufacturing (AM) Devices which automates the design and manufacturing process in order to minimize or eliminate the need to teach and train new users in the art of Additive Manufacturing (AM). This system and methodology allows anyone, with little to no technical know-how, to successfully operate an AM device to produce products that improve their quality of life, on demand, locally, and during events that cause disruption of traditional global manufacturing supply chains. Additionally, the described systems and methods also allow anyone to design and create products with little to no prior technical know-how. This is accomplished by integrating computational systems and processors into the physical device such that 3D model data can be interrupted and translated into actions by the AM device without the need for a highly trained operator or user.

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Номер записи: 96
25-05-2017 дата публикации

Three-dimensional deposition device and three-dimensional deposition method

Номер: US20170144248A1
Автор: Hitoshi Yoshimura, Yoshiharu Ozawa
Принадлежит: Mitsubishi Heavy Industries Ltd

A three-dimensional deposition device and a three-dimensional deposition method used to manufacture a three-dimensional object with high accuracy are provided. A three-dimensional deposition device for forming a three-dimensional shape by depositing a formed layer on a base unit, includes: a powder supply unit which supplies a powder material by injecting the powder material toward the base unit; a light irradiation unit which irradiates the powder material feeding from the powder supply unit toward the base unit with a light beam so that the powder material is melted and the melted powder material is solidified on the base unit to thereby form the formed layer; and a control device which controls operations of the powder supply unit and the light irradiation unit.

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Номер записи: 97
25-05-2017 дата публикации

Powder-Bed-Based Additive Production Method And Installation For Carrying Out Said Method

Номер: US20170144372A1
Автор: Martin Schaefer, Yves Kuesters
Принадлежит: SIEMENS AG

A powder-bed-based, additive production method for producing a component is disclosed. Individual layers are applied by a support component onto the powder bed in which the component is produced. Each layer can be removed from a supply powder bed having the same dimensions as the powder bed, and the layer can be compressed using a compressor. High quality layers may be produced in this manner. The layers may be compressed and flat as a result of their contact to the carrier component, e.g., the support component. The quality of the component that is produced can thus also be improved.

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Номер записи: 98
24-05-2018 дата публикации

Optical-coherence-tomography guided additive manufacturing and laser ablation of 3d-printed parts

Номер: US20180143147A1
Автор: Austin MCELROY, Joseph Beaman, Scott Fish, Thomas Milner
Принадлежит: University of Texas System

An apparatus and method for detecting defects in an additive manufacturing process is provided. An example method may include depositing a first layer of material, depositing a second layer of material in at least partial contact with the first layer of material, and inducing a phase change between the first and second layers of material via an energy beam. Further, the method may include directing an electromagnetic radiation beam to at least a portion of a subsurface interface between the first and second layers, measuring radiation returned from the material, and based on the measured radiation, determining a location of a refractive index gradient within the material.

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Номер записи: 99
15-09-2022 дата публикации

AN ADDITIVE MANUFACTURING DEVICE

Номер: US20220288687A1
Автор: TANRIKULU Ahmet Alptug, Yavas Hakan
Принадлежит: TUSAS- TURK HAVACILIK VE UZAY SANAYII ANONIM SIRKETI

A body and a table that is located on the body and allows powders to be laid thereon by a laying apparatus is disclosed. At least one layer is created by sintering or fusing the powders laid on the table, a part is produced by depositing the layers using an additive manufacturing method, at least one heat source assembly that is located on the body and applies heat treatment to the powders laid on the table, at least one sensor for measuring position and operating status of the heat source assembly, and at least one control unit controlling the heat source assembly based on data received from the sensor. 11232342354645701701726. An additive manufacturing device () comprising a body (); a table () which is located on the body () and allows powders (T) to be laid thereon by means of a laying apparatus (S); at least one layer (L) which is created by sintering or fusing the powders (T) laid on the table (); a part (P) which is produced by depositing the layers (L) using additive manufacturing method; at least one heat source assembly () which is located on the body () and applies heat treatment to the powders (T) laid on the table (); at least one sensor () for measuring position and operating status of the heat source assembly (); and at least one control unit () controlling the heat source assembly () based on data received from the sensor () , characterized by a coating (C) applied on at least one layer (L) by magnetic sputtering method; at least one target material () which allows the coating (C) atoms to be removed from its surface when a process gas (G) is collided onto the target material (); and at least one magnetic sputtering assembly () which is located on the body () and is triggered by means of the control unit () such that it allows a coating (C) to be applied on at least one layer (L) by magnetic sputtering method.2157. The additive manufacturing device () according to claim 1 , characterized by a sensor () for measuring position and operating status of ...

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Номер записи: 100