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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5954. Отображено 100.
22-03-2012 дата публикации

Remote output control for an electric welder power supply

Номер: US20120067852A1
Автор: Boyd BOSER, Harold BOSER
Принадлежит: Individual

A remote output control for controlling the output level of an electric welder power supply at a remote location and providing a source of isolated electrical power at the remote location is disclosed. The remote output control includes a water-proof, sealed housing fitted with an electrical receptacle and a potentiometer. A cable construction is electrically connected to the electrical receptacle and the potentiometer at one end and is provided with electrical plugs at the opposite end. A molded over wire y-adaptor is also included in the cable construction.

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Номер записи: 1
17-05-2012 дата публикации

Method and Control Device for Monitoring the Quality of Spot Welds of a Resistance Welding Gun Comprising the Outputting of a Warning Message

Номер: US20120118861A1
Автор: Denis Court, Juergen Haeufgloeckner, Klaus Ehrhardt, Micha Bertsch, Michael Ripper, Norbert Krämer
Принадлежит: ROBERT BOSCH GMBH

A method for monitoring and/or regulating the quality of spot welds of a resistance welding gun includes measuring and storing measured values during the execution of resistance spot welds at different points on a workpiece. The measured values represent a voltage, a current, a resistance, a welding time, an energy, a force on welding contacts and/or an output during the production of a resistance spot weld. The method also includes comparing the measured values with a reference measurement value. The reference measurement value represents a corresponding voltage, a current, a resistance, a welding time, an energy, a force on welding contacts and/or an output during the production of a corresponding resistance spot weld. The method also includes outputting a warning message when, during the comparison, it is established that a predetermined number of successive measured values is outside a predefined tolerance band from the reference measurement value.

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Номер записи: 2
21-03-2013 дата публикации

Apparatus and Method Using Reduced Volume Electro-Hydraulic Chambers for Trimming and Joining Panels

Номер: US20130067976A1
Автор: Sergey Fedorovich Golovashchenko
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A tool for modifying a workpiece by either trimming or joining the workpiece. The tool is an electro-hydraulic tool that uses a pulse transmitted through a liquid to trim a workpiece or to join two thicknesses of metal together. A method of trimming the workpiece includes the steps of providing a high voltage discharge in a liquid that drives a workpiece into engagement with a cutting edge of a tool steel insert. A method of joining two or more thicknesses of metal together includes the step of creating a high voltage discharge through an electrode that accelerates one panel or thickness of metal into a second panel that is held stationary by a backing plate while the first thickness of metal is accelerated into the second thickness of metal.

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Номер записи: 3
04-04-2013 дата публикации

Welding of transfer ring on round tube

Номер: US20130081913A1
Автор: Mark Nowaczyk, Stefan Peerenbooms
Принадлежит: Tenneco Automotive Operating Co Inc

A triple tube shock absorber includes a pressure tube, a reserve tube and an intermediate tube. The intermediate tube is disposed between the pressure tube and the reserve tube. A control valve is in communication with the intermediate chamber. The control valve engages a transfer ring which has a saddle shaped surface that mates with the outside surface of the intermediate tube. A triangular shaped weld bead also has a saddle shape to engage the outer surface of the intermediate tube. The weld bead has a triangular shape to facilitate capacitance discharge welding of the transfer ring to the intermediate tube.

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Номер записи: 4
11-04-2013 дата публикации

METHODS AND SYSTEMS FOR RESISTANCE SPOT WELDING USING DIRECT CURRENT MICRO PULSES

Номер: US20130087533A1
Автор: HOU Wenkao
Принадлежит: ARCELORMITTAL INVESTIGACION Y DESARROLLO, S.L.

Methods and systems for resistance spot welding using direct current micro pulses are described. One described method comprises comprising forming a weld joint by applying a plurality of direct current micro pulses to at least two pieces of materials through a first electrode and a second electrode. 1. A method for resistance spot welding , comprising the step of:forming a weld joint by applying a plurality of direct current micro pulses to at least two pieces of material through a first electrode and a second electrode;separating each of the plurality of direct current micro pulses by a weld current off-time;applying a current to the at least two pieces of material during the weld current off-time.2. The method of claim 1 , further comprising the step of:fixing the at least two pieces of material together by a predetermined weld force.3. The method of claim 2 , wherein the predetermined weld force is between 1 kN and 10 kN.4. (canceled)5. The method of claim 1 , wherein a first one of the at least two pieces of material comprises a first steel sheet and a second one of the at least two pieces of material comprises a second steel sheet.6. The method of claim 1 , wherein the magnitude of each of the plurality of direct current micro pulses is between 1 kA and 20 kA.7. The method of claim 1 , wherein a duration of each of the plurality of direct current micro pulses is between 1 ms and 10 ms.8. The method of claim 1 , wherein a duration of each of the plurality of the weld current off-times is between 1 ms and 10 ms.9. The method of claim 1 , wherein a magnitude of each of the plurality of direct current micro pulses is based at least in part on at least one of a joint design of a weld joint joining the at least two pieces of material together claim 1 , a gauge of at least one of the at least two pieces of material claim 1 , a coating of at least one of the at least two pieces of material claim 1 , a material chemical composition of at least one of the at least two ...

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Номер записи: 5
18-07-2013 дата публикации

WELDING DEVICE

Номер: US20130180961A1
Автор: Goto Akira, IKEDA Tatsuro, Miyasaka Shinichi, Morita Takahiro
Принадлежит: HONDA MOTOR CO., LTD.

A welding device includes a lower tip and an upper tip, as welding tips, and pressuring members. The pressuring members are supported by a support member disposed in the upper tip. The pressuring members are displaced by the action of pressuring member displacement mechanisms and, together with the upper tip, come into contact with a metal plate arranged on the outermost part of a laminated body. 1. A spot welding apparatus for spot welding a stacked body of a plurality of workpieces including the outermost workpiece , comprisinga first welding tip and a second welding tip, between which the stacked body is interposed,a pressing member for pressing the outermost workpiece of the stacked body body, the first welding tip and the pressing member being brought into contact with different portions of the outermost workpiece, anda holder for holding the first welding tip and the pressing member, which is displaced by a holder displacement mechanism,wherein the holder has a pressing member displacement mechanism for displacing the pressing member, andthe pressing member displacement mechanism is electrically isolated from the holder.2. The spot welding apparatus according to claim 1 , wherein the pressing member acts as an auxiliary electrode claim 1 , the auxiliary electrode has a polarity opposite to that of the first welding tip claim 1 , and a branching current is made to flow either from the first welding tip to the auxiliary electrode claim 1 , or from the auxiliary electrode to the first welding tip claim 1 , when electric current is conducted between the first welding tip and the second welding tip.3. The spot welding apparatus according to claim 2 , further comprising another auxiliary electrode disposed in a vicinity of the second welding tip claim 2 , wherein the other auxiliary electrode has a polarity opposite to that of the second welding tip claim 2 , and after the branching current from the first welding tip to the auxiliary electrode or from the auxiliary ...

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Номер записи: 6
25-07-2013 дата публикации

SYSTEM AND METHOD FOR PERFORMING RESISTANCE SPOT WELDING

Номер: US20130186868A1
Автор: Das Manohar, Fernandez Vernon, Gouin Douglas P., Paille John
Принадлежит:

A probeless energy delivery controller for a resistance spot welding system includes a power supply module that generates a first current and a power delivery module configured to generate a second current from the first current. The current is delivered to a first electrode and a second electrode that have at least two weld pieces interposed there-between. As the current flows through the weld pieces, the resistance and temperature of the weld pieces increase such that the weld pieces weld together. The system further includes a voltage control module that receives a current reading indicating a value of the second current, estimates a resistance of the weld pieces based on the value of the second current, and determines a phase angle for setting a voltage outputted by the power supply module based on the estimated resistance and a power profile. The power supply module generates the first current based on the phase angle. 1. A spot welding system comprising:a power supply module configured to generate a first current;a power delivery module configured to receive the first current from the power supply module and to generate a second current from the first current;a first electrode and a second electrode configured to resistively spot weld at least two weld pieces interposed between the first and second electrode by receiving the second current, thereby causing the resistance and temperature of the weld pieces to increase such that the weld pieces weld together; anda voltage control module configured to receive a current reading indicating a value of the first current, to estimate a resistance of the weld pieces as a result of the second current flowing through the weld pieces based on the value of the first current, and to determine a phase angle value for setting a voltage outputted by the power supply module based on the estimated resistance and a power profile that indicates an amount of power to be delivered by the power delivery module over a period of time, ...

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Номер записи: 7
08-08-2013 дата публикации

SPOT WELDING APPARATUS AND SPOT WELDING METHOD

Номер: US20130200047A1
Автор: Furukawa Masashi, KONISHI Tokujiro, SHIBATA Yoshinori, TESHIMA Hideki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The first embodiment of the invention is a spot welding method using a welding gun including a pair of electrodes holding and welding a welding point of a workpiece. The method including: transmitting an ultrasonic from one of the electrode pair to the workpiece with the electrode pair holding the workpiece; receiving the ultrasonic at the other electrode passed through the electrode pair and the workpiece; and detecting a holding state of the workpiece on the basis of an amplitude of the received ultrasonic. According to the embodiments of the invention, the welding gun can hold the workpiece at the proper position and with the correct angle, thereby reducing the welding flaws. 1. A spot welding method using a welding gun including a pair of electrodes holding and welding a welding point of a workpiece , the method comprising:transmitting an ultrasonic from one of the electrode pair to the workpiece with the electrode pair holding the workpiece;receiving the ultrasonic at the other electrode passed through the electrode pair and the workpiece; anddetecting a holding state of the workpiece on the basis of an amplitude of the received ultrasonic.2. The spot welding method according to claim 1 , whereinwhile the welding gun holding the workpiece, calculating a lap amount, which is a distance from the center of the electrodes to a first end of the workpiece located nearest to the center capable of being welded, on the basis of the amplitude of the received ultrasonic, and detecting the calculated lap amount as the holding state of the workpiece, andperforming the spot welding in the case that the calculated lap amount is not smaller than a minimum lap amount required to perform the spot welding at the first end of the workpiece.3. The spot welding method according to claim 2 , whereincorrecting the holding position of the workpiece with the electrode pair on the basis of the difference between the calculated lap amount and the minimum lap amount, andperforming the spot ...

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Номер записи: 8
17-10-2013 дата публикации

ULTRASONIC IN-PROCESS MONITORING AND FEEDBACK OF RESISTANCE SPOT WELD QUALITY

Номер: US20130269439A1
Автор: Chertov Andriy M., Ewasyshyn Frank J., Maev Roman Gr., Paille John M.
Принадлежит:

A method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld. Analysis of the spectrum of ultrasonic waves provides the operator with an indication of the size, thickness, location, dynamics of formation and quality of the spot weld. The method presents a fundamentally new physical approach to the characterization of the spot weld quality. Together with transmission mode it includes new modes of operation of ultrasonic probes such as a reflection mode and simultaneous use of transmission and reflection modes, and a new physical interpretation of the signal analysis results. 1. An apparatus for monitoring welding in a resistance welder , the resistance welder including first and second electrodes , the apparatus comprisingan ultrasonic probe disposed within the first electrode that generates a burst of acoustic energy that is directed to a weld subject, receives acoustic energy reflected from the weld subject and generates an output signal in response to the reflected acoustic energy; anda computer that receives the output signal, the computer determining a characteristic of a liquid zone that forms during welding based on a phase inverted acoustic wave reflected from an interface between the liquid zone and a solid portion of the weld subject proximal to the ultrasonic probe; the liquid zone solidifying into a weld nugget after welding current is turned off; and an absolute time of flight value of reflected acoustic waves corresponds to the weld nugget size after the welding current is turned off.2. The apparatus of wherein the computer determines that the liquid zone formed based on the presence of the phase inverted acoustic wave in the reflected acoustic energy.3. The apparatus of wherein the weld subject includes at least two metal sheets claim 1 , the two metal sheets disposed between the first and ...

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Номер записи: 9
07-11-2013 дата публикации

Capacitor Discharge Weld For Connecting Tubular Twist Beam Profiles To Cast Trailing Arm Via Adapter Ring

Номер: US20130292364A1
Автор: Toepker Dieter
Принадлежит:

A suspension component for a vehicle includes a cast iron body, a high strength steel tube and an adapter ring. The adapter ring includes a protrusion engaged with a face of the cast iron body. The protrusion is heated to a plasticized state as a capacitor is discharged through the protrusion and the face. The adapter ring is welded to the body upon cooling of the adapter ring. The high strength steel tube is fixed to the adapter ring. 1. A method of assembling a suspension component for a vehicle , the method comprising:aligning a cast iron body with a low carbon steel adapter ring;engaging a protrusion of the adapter ring with a face of the body;discharging a capacitor through the interface of the protrusion and the face to cause a portion of the protrusion to enter a plastic state;forcing the body and the adapter ring toward one another to weld the adapter ring to the body; andmounting a tube constructed from a material different than the adapter ring to the adapter ring.2. The method of wherein the protrusion is shaped as an uninterrupted ring.3. The method of wherein a cross-section of the protrusion is triangularly shaped.4. The method of wherein a contact circle between the body and the adapter ring is defined at an intersection of two legs of the triangularly shaped cross-section.5. The method of wherein an included angle between the two legs ranges between 30 and 90 degrees.6. The method of further including welding the tube to the adapter ring after the adapter ring has been capacitor discharge welded to the body.7. The method of wherein welding the tube to the adapter ring includes laser welding.8. The method of further including engaging an inner circumferential surface of the tube with a pilot portion of the adapter ring.9. The method of wherein the pilot portion has an outer diameter less than an outer diameter of the adapter ring.10. The method of further including engaging an end face of the tube with a land formed on the adapter ring.11. The method ...

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Номер записи: 10
19-12-2013 дата публикации

NEEDLE DISABLING DEVICE

Номер: US20130334175A1
Автор: Jackson Kenneth A., Schureck William A.
Принадлежит:

A used needle is inserted in a housing of a needle apparatus disabling device. As the needle is pushed downwards sealing a collar opening and bears against a stationary cutter blade. The needle is pushed further into the device where it contacts upper and lower electrodes. An electric current passes through the needle, which causes it to become heated resistively to destruction. A voltage drop between the electrodes is detected by a processor activating a motor driven movable cutter blade which then severs a remaining stub or remnant of the needle portion and simultaneously urges the severed stub downwardly onto the electrodes to ensure its complete destruction. During this process any sparks or airborne contaminants, or combustion gases are prevented from escaping through the opening by the sealing action of the apparatus. 119-. (canceled)20. A needle apparatus disabling device for disabling a needle apparatus having a plastic body portion and a needle portion with a needle and said needle portion contains the entire metal segment of the needle , comprising;a. a housing for receiving at least a part of a needle apparatus,b. an electrode assembly comprises of at least a pair of electrodes for substantially disintegrating the needle portion of the needle apparatus,c. a cutter that cuts the needle apparatus severing the needle portion from the plastic body portion of the needle apparatus,d. a container for capturing debris.21. A needle apparatus disabling device according to claim 20 , wherein the cutter is mechanical.22. A needle apparatus disabling device according to claim 20 , wherein the cutter is controlled by an electronic processor to sever the needle portion from the plastic body portion.23. A needle apparatus disabling device according to claim 22 , wherein the cutter is controlled by an electronic processor which is arranged in use to detect a drop in voltage between electrodes as the needle portion contacts the electrode assembly.24. A needle apparatus ...

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Номер записи: 11
19-12-2013 дата публикации

Method for Operating a Resistance Welding Device

Номер: US20130334179A1
Автор: Scholz Reinhard
Принадлежит:

The service life of the power semiconductors of a resistance welding device largely determines the reliability of the installation in operation. The disclosure proposes a method for monitoring the remaining service life of power semiconductors that are exposed to current during the operation of a resistance welding device. The fact that, when there is a change of load of at least one power semiconductor, the change in a power semiconductor parameter is determined and the service life of the power semiconductor is determined while taking into consideration a setpoint selection that is representative of the remaining service life allows the reliability of the installation to be drastically improved. 1. A method for monitoring the remaining service life of power semiconductors of a resistance welding device that are exposed to current during operation of the resistance welding device , the method comprising:determining a change in a power semiconductor parameter of at least one power semiconductor when there is a change of load of the at least one power semiconductor; anddetermining a service life of the at least one power semiconductor with reference to a setpoint selection that is representative of the remaining service life.2. The method according to claim 1 , further comprising:performing a welding operation, during which the change of load occurs; anddetermining the change in the power semiconductor parameter with reference to a duration of the welding operation.3. Method according to claim 1 , further comprising:storing every determined change in the power semiconductor parameter with reference to an associated change of load, so that a number of changes of load in relation to the change in the power semiconductor parameter is retrieved as a pair of values.4. The method according to claim 1 , wherein the at least one power semiconductor is included in at least one of a welding inverter claim 1 , a welding transformer claim 1 , and a welding rectifier.5. The ...

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Номер записи: 12
19-12-2013 дата публикации

RESISTANCE WELDING METHOD, RESISTANCE-WELDED MEMBER, RESISTANCE WELDER AND CONTROL APPARATUS THEREOF, CONTROL METHOD AND CONTROL PROGRAM FOR RESISTANCE WELDER, AND RESISTANCE WELDING EVALUATION METHOD AND EVALUATION PROGRAM

Номер: US20130337284A1
Автор: ISHII Yasuhiro, Kitayama Tsunaji, KONISHI Tokujiro, Murase Morimasa, Onda Takahiro, SHIBATA Yoshinori, Takao Hisaaki, TESHIMA Hideki, Tominaga Naotoshi, WATANABE Goro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A resistance welding method according to the invention includes: a melting start time specification process for specifying a melting start time, which is a time at which at least a part of a welding portion of a welding subject starts to melt while being subjected to Joule heating by a power input from an electrode pressed against the welding subject, by detecting a variation in an ultrasonic wave emitted toward the welding portion; a first power amount calculation process for calculating a first power amount, which is an integrated value of the power input into the welding subject via the electrode from the melting start time; a first determination process for determining whether or not the first power amount has reached a first set value; and a heating process for performing the Joule heating from the melting start time until the first power amount reaches the first set value. 1. A resistance welding method comprising:specifying a melting start time, which is a time at which at least a part of a welding portion of a welding subject starts to melt while being subjected to Joule heating by a power input from an electrode pressed against the welding subject, by detecting a variation in an ultrasonic wave emitted toward the welding portion;calculating a first power amount, which is an integrated value of the power input into the welding subject via the electrode from the melting start time;determining whether or not the first power amount or a welding index value that indexes a welding condition of the welding portion and corresponds to the first power amount has reached at least a first set value; andperforming the Joule heating from the melting start time until the first power amount or the welding index value reaches at least the first set value,wherein a nugget generated when the welding portion melts and solidifies is formed with stability.2. The resistance welding method according to claim 1 , wherein specifying a melting start time includes:detecting a ...

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Номер записи: 13
27-02-2014 дата публикации

SPOT WELDING APPARATUS

Номер: US20140054272A1
Автор: KIMOTO Kazuhiko
Принадлежит:

A spot welding apparatus includes a robot, a spot welding gun, and a controller. The spot welding gun includes a gun arm, a fixed electrode, a movable electrode, and a gun-dedicated motor. The fixed electrode is fixed to the gun arm. The movable electrode is disposed on the gun arm at a position opposite a position at which the fixed electrode is disposed. The gun-dedicated motor is configured to move the movable electrode. The controller is configured to output a position command to the gun-dedicated motor so as to control the gun-dedicated motor to move the movable electrode, configured to control the fixed electrode and the movable electrode to hold a to-be-welded object under pressure between the fixed electrode and the movable electrode, and configured to subject the to-be-welded object to spot welding. 1. A spot welding apparatus comprising:a robot; a gun arm;', 'a fixed electrode fixed to the gun arm;', 'a movable electrode disposed on the gun arm at a position opposite a position at which the fixed electrode is disposed; and', 'a gun-dedicated motor configured to move the movable electrode; and, 'a spot welding gun comprisinga controller configured to output a position command to the gun-dedicated motor so as to control the gun-dedicated motor to move the movable electrode, configured to control the fixed electrode and the movable electrode to hold a to-be-welded object under pressure between the fixed electrode and the movable electrode, and configured to subject the to-be-welded object to spot welding.2. The spot welding apparatus according to claim 1 ,wherein the fixed electrode in its axis direction and the movable electrode in its axis direction each comprise a Z axis direction, the Z axis direction being orthogonal to an X axis direction,wherein the gun arm comprises a bending degree z in the Z axis direction, and the gun arm comprises a bending degree x in the X axis direction,wherein the movable electrode is configured to apply a desired welding ...

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Номер записи: 14
06-03-2014 дата публикации

USER INTERFACE FOR WELDING EQUIPMENT AND SYSTEMS

Номер: US20140061169A1
Автор: Darisipudi Ashok, Herb Jeff M., Patterson Jon M., Sammons Michael A., Totzke James R.
Принадлежит:

A user interface for welding equipment is disclosed. The user interface comprises an architecture which organizes different types of welding controls into pre-defined categories or zones. The zones are arranged in a layout on the interface to provide access to easily see and adjust important weld parameters, particularly weld heat. Main displays and basic heat controls are provided in an upper portion of the display, while less frequently used controls are provided lower in the display, and to the side of the display. Electronic and graphic displays are arranged in levels, providing a limited number of layers, and can be associated with multi-dimensional navigational devices and home buttons to allow for easy navigation through the display. 1. An architecture for a user interface for use in welding equipment , the architecture comprising:a main display zone;a basic controls zone;an advanced controls zone;an advisory information zone;an operational controls zone; anda power zone,wherein the main display and basic controls zones are provided in an upper interface portion to provide easy access to view and change weld heat data,the advanced control zone and the advisory information zone are provided in a central interface portion below and adjacent the upper interface portion; andthe operational controls zone and the power zone are located in a lower interface portion below and adjacent the central interface portion, andwherein a power control is provided in the power zone in the lower interface portion and the lower interface is adapted to selectively receive an operational control in the operational control zone; the central interface is adapted to selectively receive at least one of an advisor control in the advisory information zone, and advanced control in the advanced control zone, and a machine management control in the machine management zone; a heat control is provided in the basic controls zone in the upper interface zone, and the upper interface zone is ...

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Номер записи: 15
20-03-2014 дата публикации

Bumper Beam With Losing Plate Joined Using CD Welding (Capacitor Discharge)

Номер: US20140077522A1
Автор: Kostka Oliver, Schleichert Edward
Принадлежит:

The invention relates to a bumper bracket for a motor vehicle body, comprising a first profiled section having a three-dimensional structure and a second component, which spatially closes the first profiled section. The two components have overlapping surfaces used for welding, wherein the welding is carried out by way of impulse capacitor discharge welding. 1. A bumper bracket for a motor vehicle body , comprising a first profiled section having a three-dimensional structure and a second component , which spatially closes the first profiled section , the two components having overlapping surfaces used for welding , wherein the welding is carried out as impulse capacitor discharge welding.2. The bumper bracket according to claim 1 , wherein the second component is designed as a virtually flat cover.3. The bumper bracket according to claim 1 , wherein the second component likewise has a three-dimensional structure.4. The bumper bracket according to claim 1 , wherein at least one of the components has a double hat structure.5. The bumper bracket according to claim 1 , wherein the components are made of steel as stampings and pressed parts.6. The bumper bracket according to claim 1 , wherein the overlapping surfaces include weld grooves.7. The bumper bracket according to claim 1 , wherein the lengths of the weld seams add up to a total length claim 1 , which corresponds to at least half the length of the profiled section.8. A method for producing bumper brackets for a motor vehicle body claim 1 , comprising a first profiled section having a three-dimensional structure and a second component claim 1 , which spatially closes the first profiled section claim 1 , the two components having overlapping surfaces used for welding claim 1 , wherein the surfaces are welded together by way of impulse capacitor discharge welding. This U.S. Patent Application claims the benefit of DE Patent Application Serial No. 10 2013 200 073.1 filed Jan. 4, 2013, entitled “Bumper Bracket,” ...

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Номер записи: 16
27-03-2014 дата публикации

WELDING SYSTEM FOR ATTACHING FIRING TIPS TO SPARK PLUG ELECTRODES

Номер: US20140083982A1
Автор: Quitmeyer Frederick J.
Принадлежит: FEDERAL-MOGUL IGNITION COMPANY

A welding system for welding small precious metal firing tips to spark plug electrodes, such as ground and/or center electrodes. According to one embodiment, the welding system includes a firing tip storage assembly and a firing tip welding assembly, where the firing tip storage assembly uses pressurized gas introduced at the bottom of a part container to float or lift the firing tips so that the firing tip welding assembly can more easily acquire them with a vacuum-driven nozzle that also doubles as a welding electrode. The firing tip welding assembly is mounted to a robotic apparatus that can index or move the firing tip welding assembly between the firing tip storage assembly, a welding station and/or any other suitable positions. 1. A welding system , comprising:a firing tip storage assembly having a gas bubbler fluidly coupled to a part container, the gas bubbler provides pressured gas from a gas supply to the part container and the part container stores a plurality of firing tips; anda firing tip welding assembly having an attachment piece both fluidly and electrically coupled to a welding electrode, the attachment piece provides vacuum pressure from a vacuum source to the welding electrode and provides welding current from a power supply to the welding electrode;wherein the welding system is configured so that the pressurized gas lifts the plurality of firing tips within the part container while the welding electrode acquires one of the firing tips from the part container using the vacuum pressure.2. The welding system of claim 1 , wherein the plurality of firing tips are precious metal firing tips and the gas bubbler provides pressurized inert gas from the gas supply to the part container so that oxidation of the precious metal firing tips is minimized.3. A firing tip storage assembly claim 1 , comprising:a gas bubbler fluidly coupled to a gas supply; anda part container fluidly coupled to the gas bubbler and having one or more gas openings and an interior ...

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Номер записи: 17
01-01-2015 дата публикации

APPARATUS AND METHODS FOR JOINING DISSIMILAR MATERIALS

Номер: US20150000956A1
Автор: Spinella Donald J.
Принадлежит:

An apparatus and method for fastening dissimilar metals like steel and aluminum utilizes a spot welding machine. The metals are stacked with an aluminum body captured between steels. Heat from the welder's electric current softens the lower melting point aluminum allowing an indentation of the steel layer to penetrate the aluminum and weld to an opposing steel layer. The process may be used to join stacks with several layers of different materials and for joining different structural shapes. 1. A method for fastening a first electrically conductive body made of a first material to a second electrically conductive body being made from a second material dissimilar to the material of the first body , using electrical resistance welding , comprising:placing the first and second bodies together in physical and electrical contact, the first material having a lower melting point than the second material;placing an electrically conductive third body that is made of a third material that is weldable to the second material and which has a higher melting point than the first material in physical and electrical contact with the first material to form an electrically conductive stack inclusive of at least a portion of the first body, the second body and the third body;applying an electrical potential across the stack, inducing a current to flow through the stack and causing resistive heating, the resistive heating causing a softening of a least a portion of the first body;urging a softened portion of the third body through the softened portion of the first body toward the second body;after the portion of the third body contacts the second body, welding the third body to the second body.2. The method of claim 1 , wherein the first material includes at least one of aluminum claim 1 , magnesium and alloys thereof.3. The method of claim 2 , wherein the second material includes at least one of steel claim 2 , titanium and alloys thereof.4. The method of claim 3 , wherein the third ...

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Номер записи: 18
01-01-2015 дата публикации

All-in-one jigless projection loading system and body component assembling method using the same for vehicle

Номер: US20150001186A1
Автор: Sung Phil Ryu
Принадлежит: Hyundai Motor Co

An all-in-one jigless projection loading system for a vehicle is adapted to load and assemble a body component to a vehicle body. The all-in-one jigless projection loading system may include: a fixing bracket fixed to an arm of a robot; a position adjusting member rotatably mounted to the fixing bracket; a gripper mounted to the fixing bracket to be movable backward and forward, and gripping the body component; an array unit mounted to the position adjusting member, and arraying the body component; and a welding unit mounted to the fixing bracket, and projection-welding the body component to a vehicle body.

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Номер записи: 19
01-01-2015 дата публикации

APPARATUS AND METHODS FOR JOINING DISSIMILAR MATERIALS

Номер: US20150001187A1
Автор: Spinella Donald J.
Принадлежит:

An apparatus is provided including: at least one first sheet comprising a first material; at least one second sheet comprising a second material, wherein the first material comprises at least one of: a thermal conductivity and an electrical conductivity that is at least 10% lower than that of the second material; and a joint comprising at least one resistance spot weld (RSW), wherein the first sheet is at least about 1.5 times the thickness of the second sheet. Methods are also provided.

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Номер записи: 20
01-01-2015 дата публикации

SPOT WELDED JOINT AND SPOT WELDING METHOD

Номер: US20150001188A1
Автор: Azuma Masafumi, Hamatani Hideki, KAWATA Hiroyuki, Maruyama Naoki, Oikawa Hatsuhiko, Suzuki Noriyuki, WATANABE Fuminori
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

Provided is a spot welded joint () which includes at least one thin steel plate with a tensile strength of 750 MPa to 1850 MPa and a carbon equivalent Ceq of equal to or more than 0.22 mass % to 0.55 mass % and in which a nugget () is formed in an interface of the thin steel plates (A, B). In a nugget outer layer zone, a microstructure consists of a dendrite structure in which an average value of arm intervals is equal to or less than 12 μm, an average grain diameter of carbides contained in the microstructure is 5 nm to 100 nm, and a number density of carbides is equal to or more than 2×10/mm. 1. A spot welding method for forming a nugget in a joint surface of two or more thin steel plates ,at least one of the two or more thin steel plates being a high-strength steel plate whose tensile strength is 750 MPa to 1850 MPa and whose carbon equivalent Ceq represented by a formula (1) below being 0.22 mass % to 0.55 mass %,the method comprising the steps of:performing welding energization under a condition that a pressurizing force EF (N) of a welding electrode against the two or more thin steel plates fulfills a formula (2) below;next, while holding the pressurizing force EF, performing post-heating energization to the welding electrode with a post-heating energization current PC (kA) fulfilling a formula (4) below prescribed with a welding current WC (kA) in the welding energization for a post-heating energization time Pt (ms) fulfilling a formula (5) below; andnext, releasing pressurizing at the pressurizing force EF,wherein between the step of performing welding energization and the step of performing post-heating energization, the thin steel plates are cooled for a cooling time after welding Ct (ms) fulfilling a formula (3) below, while the pressurizing force EF is held, and [{'br': None, 'Ceq=[C]+[Si]/30+[Mn]/20+2[P]+4[S]\u2003\u2003(1)'}, {'br': None, 'i': ×h', '×h, '1960≦EF≦3430\u2003\u2003(2)'}, {'br': None, '16≦Ct≦300\u2003\u2003(3)'}, {'br': None, '0.40×WC≦PC≦0 ...

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Номер записи: 21
01-01-2015 дата публикации

Resistance welding fastener, apparatus and methods

Номер: US20150001189A1
Автор: Daniel Bergstrom, Donald J. Spinella
Принадлежит: Alcoa Inc

An apparatus and method for fastening dissimilar metals like steel and aluminum utilizes a steel rivet and a spot welding machine. The rivet and metals are stacked and the heat from the welder's electric current softens the lower melting point aluminum allowing the rivet to penetrate the aluminum and weld to the steel layer. The fastener may be used to join stacks with several layers of different materials and may be used to apply a threaded socket or stud made from steel or titanium to an aluminum or magnesium alloy structure. Layers of non-conductive materials like plastic and ceramics may also be affixed to a conductive layer using the fastener made from a compatible material that extends through a pilot hole.

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Номер записи: 22
01-01-2015 дата публикации

METHOD OF MONITORING THERMAL RESPONSE, FORCE AND CURRENT DURING RESISTANCE WELDING

Номер: US20150001190A1
Автор: Cohen Robert K.
Принадлежит:

A method of measuring weld thermal response as a function of time during the production of a resistance weld includes monitoring a first parameter responsive to a change in an electrode mechanical load on workpieces welded together with respect to the electrode mechanical load applied prior to application of the heat, monitoring a second parameter responsive to a change in position of linkage applying the electrode load with respect to linkage position prior to application of the heat, and processing a composite of the first parameter and the second parameter to produce a derived measurement representative of the thermal response of the weld. Electrode force and electrode current are also monitored via sensors and measurements calibrated to provide more accurate information during the welding process.

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Номер записи: 23
02-01-2020 дата публикации

JOINING APPARATUS AND METHOD OF JOINING

Номер: US20200001390A1
Автор: Nagai Hiroyuki, Tashiro Takahisa, Yamazaki Takeshi, Yokoyama Takefumi
Принадлежит:

A joining apparatus includes an electrifying/pressurizing head provided with an abutting surface contacting a pressure-receiving surface of a first metal member, joins the first metal member and a second metal member by electrification and pressurization employing the electrifying/pressurizing head, and obtains a joined body in which a joining interface inclines with respect to the pressure-receiving surface. The abutting surface includes: an electrode section capable of electrifying the first metal member; and an insulating section configured from an insulating material. At least a shortest portion where a distance from the joining interface will be shortest, of the pressure-receiving surface will be a non-contact-with-electrode section of non-contact with the electrode section, and the insulating section contacts at least part of the non-contact-with-electrode section. 1. A joining apparatus that comprises an electrifying/pressurizing head provided with an abutting surface contacting a pressure-receiving surface of a first metal member , and that joins the first metal member and a second metal member by electrification and pressurization employing the electrifying/pressurizing head , and obtains a joined body in which a joining interface inclines with respect to the pressure-receiving surface ,the abutting surface including: an electrode section capable of electrifying the first metal member; and an insulating section configured from an insulating material,the pressure-receiving surface including a non-contact-with-electrode section that does not contact the electrode section, the non-contact-with-electrode section containing a shortest portion where a distance between the pressure-receiving surface and the joining interface will be shortest, andthe insulating section contacting at least part of the non-contact-with-electrode section.2. The joining apparatus according to claim 1 , whereinthe insulating section is arranged in such a manner that a shortest distance ...

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Номер записи: 24
03-01-2019 дата публикации

RESISTANCE SPOT WELDING METHOD AND WELDED MEMBER PRODUCTION METHOD

Номер: US20190001429A1
Автор: Ikeda Rinsei, Matsuda Hiroshi, SAWANISHI Chikaumi, Takashima Katsutoshi, Taniguchi Koichi
Принадлежит: JFE STEEL CORPORATION

Provided is a resistance spot welding method that inhibits, in accordance with the degree of axis misalignment between electrodes, the occurrence of cracking in a weld regardless of the steel grade. In resistance spot welding methods according to the present invention, H (ms) is an electrode force retaining time after completion of current passage, D (mm) is an amount of axis misalignment between the electrodes, t (mm) is a total sum of sheet thicknesses of a plurality of overlapping steel sheets, T (MPa) is a tensile strength of a steel sheet having a highest tensile strength among the plurality of steel sheets, F (N) is an electrode force, and d (mm) is a tip diameter of one electrode of the pair of electrodes that has a smaller tip diameter. The electrode force retaining time H is specified to be a predetermined value or greater. 1. A resistance spot welding method for joining together a plurality of overlapping steel sheets of a sheet combination , the method comprising squeezing the sheet combination between a pair of electrodes and passing a current through the sheet combination while applying an electrode force thereto ,wherein at least one of the plurality of steel sheets is a surface-treated steel sheet including a metal coating layer and [{'br': None, 'sup': '1/2', '2·D·(t·T/(F·d))≤H when 0≤D<2'}, {'br': None, 'sup': '1/2', '(6·D−8)·(t·T/(F·d))≤H when 2≤D<5'}, {'br': None, 'sup': '1/2', '(D+17)·(t·T /(F·d))≤H when 5≤D<10'}], 'the method satisfies the following relationships,'}where H (ms) is an electrode force retaining time after completion of current passage, D (mm) is an amount of axis misalignment between the electrodes, t (mm) is a total sum of sheet thicknesses of the plurality of overlapping steel sheets, T (MPa) is a tensile strength of a steel sheet having a highest tensile strength among the plurality of steel sheets, F (N) is an electrode force, and d (mm) is a tip diameter of one electrode of the pair of electrodes, the one electrode having a ...

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Номер записи: 25
07-01-2016 дата публикации

METHOD FOR PRODUCING AN ACCELERATION SENSOR

Номер: US20160003864A1
Автор: SONDEREGGER CHRISTOF, TACK PETER CHARLES
Принадлежит: KISTLER HOLDING AG

The invention relates to a method for producing an acceleration sensor having a housing (), which has a cylindrical or cubic basic shape, having at least one internal support () and having a sensor element () arranged thereon. According to the invention a sensor element () comprising a main body () having a head part () and an end face () opposing said head part () is premounted, by surrounding the head part () with at least one piezoelectric measuring element (), a seismic composition () and a clamping ring (). The end face () is subsequently positioned on the inner support () of the housing () in contact therewith to form a contact zone () between the end face () and the support (). Finally, the sensor element () is welded in this contact zone () to the housing () The invention further relates to an acceleration sensor produced using said method. 1. A method for producing an acceleration sensor for use in machines , systems , vehicles or aircraft , wherein the finished acceleration sensor comprises a housing , which is cylindrical or cubic in terms of its basic shape , with at least one internal support with a sensor element arranged thereon , the sensor element including a base body having a head part and an end face opposite the head part , the method steps comprising ,a) pre-installing the sensor element by encompassing the head part of the base body with at least one piezoelectric measuring element, and enclosing the sensor element with a seismic mass and a clamping ring,b) forming a contact zone between end face and support by positioning the end face in contact with the support, and c) constructing a materially-bonded connection at the contact zone by welding the face on the support.2. The method according to claim 1 , wherein the welding comes about by resistance welding claim 1 , in that a welding electrode with the head part of the sensor element and a counter electrode on the housing are contacted claim 1 , and subsequently a defined voltage for ...

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Номер записи: 26
13-01-2022 дата публикации

METHOD OF RESISTANCE SPOT WELDING AND RESISTANCE SPOT WELDING APPARATUS

Номер: US20220009020A1
Автор: Yasuda Keigo
Принадлежит:

The present disclose provides a method of resistance spot welding that can inhibit Liquid Metal Embrittlement-induced cracking in zinc-coated steel plates irrespective of the plate thicknesses. One aspect of the present disclosure provides a method of resistance spot welding that includes welding a workpiece with a resistance spot welding apparatus. The workpiece includes two or more steel plates in an overlapping state. The two or more steel plates include at least one steel plate coated with zinc. The welding includes causing a cooling rate of a high-tensile steel plate among the two or more steel plates to be higher than a cooling rate of an other steel plate among the two or more steel plates. The high-tensile steel plate has a tensile strength higher than a tensile strength of the other steel plate. 1. A method of resistance spot welding , the method comprising welding a workpiece with a resistance spot welding apparatus , the workpiece including two or more steel plates in an overlapping state ,the two or more steel plates including at least one steel plate coated with zinc, andthe welding comprising causing a cooling rate of a high-tensile steel plate among the two or more steel plates to be higher than a cooling rate of an other steel plate among the two or more steel plates, the high-tensile steel plate having a tensile strength higher than a tensile strength of the other steel plate.2. The method of resistance spot welding according to claim 1 , a first electrode configured to be in contact with the high-tensile steel plate; and', 'a second electrode configured to be in contact with the other steel plate, and, 'wherein the resistance spot welding apparatus includeswherein an area of contact between the first electrode and the high-tensile steel plate is larger than an area of contact between the second electrode and the other steel plate.3. A resistance spot welding apparatus configured to weld a workpiece including two or more steel plates in an ...

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Номер записи: 27
20-01-2022 дата публикации

JOINT STRUCTURE AND METHOD FOR MANUFACTURING JOINT STRUCTURE

Номер: US20220016725A1
Автор: MAEDA Kyohei, Suzuki Reiichi
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A joint structure, includes: a first member including a high tensile strength steel; and a second member including a high tensile strength steel and superposed on the first member, the first member and the second member being resistance welded to each other, in which a gap between the first member and the second member is between 0 mm and 3 mm, a nugget is not formed at a joint portion between the first member and the second member, or when the nugget is formed at the joint portion between the first member and the second member, a diameter D of the nugget satisfies D<5 mm, and a decarburized layer is provided on at least one of a superposition surface of the first member, on which the second member is superposed, and a superposition surface of the second member, on which the first member is superposed. 1. A joint structure , comprising:a first member comprising a high tensile strength steel; anda second member comprising a high tensile strength steel and superposed on the first member, the first member and the second member being resistance welded to each other,wherein a gap between the first member and the second member is more than 0 mm and less than 3 mm,{'b': 1', '1, 'a nugget is not formed at a joint portion between the first member and the second member, or when the nugget is formed at the joint portion between the first member and the second member, a diameter D of the nugget satisfies D<5 mm, and'}a decarburized layer is provided on at least one of a superposition surface of the first member, on which the second member is superposed, and a superposition surface of the second member, on which the first member is superposed.2. The joint structure according to claim 1 , wherein a carbon amount of the high tensile strength steel of at least one of the first member and the second member is 0.35 mass % or more.32122. The joint structure according to claim 1 , wherein a corona bond is formed around the nugget claim 1 , and a diameter D of the corona bond satisfies ...

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Номер записи: 28
12-01-2017 дата публикации

COOLING TO CONTROL THERMAL STRESS AND SOLIDIFICATION FOR WELDING OF DISSIMILAR MATERIALS

Номер: US20170008118A1
Автор: Carlson Blair E., Sigler David R., Yang David
Принадлежит:

A workpiece stack-up that includes at least a steel workpiece and an aluminum-based workpiece can be resistance spot welded by a spot welding method in which the welding current is controlled to perform one or more stages of weld joint development. When it is desired to terminate weld current flow and to solidify a liquid weld pool into a weld nugget (of mostly aluminum-based composition), additional cooling is applied to the outer surface of the aluminum-based workpiece around the contact area of the spot welding electrode engaging the surface of the aluminum-based workpiece surface. The additional cooling is applied and controlled so as to increase the rate of solidification of the liquid aluminum-based material and to control the direction of solidification of the weld nugget to better confine impurities, and the like, originally in the melt, at the surface of the steel workpiece. 1. A method of resistance spot welding a workpiece stack-up , which includes an aluminum-based workpiece and a steel workpiece so as to form a resistance spot weld between the aluminum-based workpiece and the steel workpiece , the method comprising:contacting a workpiece stack-up with a pair of spot welding electrodes such that the spot welding electrodes make contact with opposed sides of the workpiece stack-up, the workpiece stack-up comprising an aluminum-based workpiece and a steel workpiece, the aluminum-based workpiece having a faying surface and the steel workpiece having a faying surface, and wherein the faying surfaces of the aluminum-based workpiece and the steel workpiece overlap and contact one another to provide a faying interface between the workpieces; andcontrolling the passage of electrical current between the spot welding electrodes and through the aluminum-based workpiece and the steel workpiece to perform at least one stage of weld joint development that includes growing a molten weld pool in the aluminum-based workpiece that extends from the faying interface into ...

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Номер записи: 29
14-01-2016 дата публикации

RESISTANCE SPOT WELDING METHOD

Номер: US20160008913A1
Автор: Ikeda Rinsei, Oi Kenji, Okita Yasuaki, SAWANISHI Chikaumi
Принадлежит: JFE STEEL CORPORATION

Proposed is a method of resistance spot welding to join a plurality of overlapping metal sheets, including: dividing a current pattern into two or more steps for welding; before actual welding, performing test welding to store, for each step as a target value, a time variation of an instantaneous amount of heat generated per unit volume and a cumulative amount of heat generated per unit volume; and subsequently, as actual welding, starting welding using, as a standard, a time variation curve of the instantaneous amount of heat generated per unit volume obtained by the test welding, and when a time variation amount of an instantaneous amount of heat generated deviates during any step from the time variation curve by a difference, performing adaptive control welding to control a current passage amount in order to compensate for the difference during a remaining welding time in the step. 1. A method of resistance spot welding to join materials to be welded by squeezing the materials between a pair of electrodes and passing current while applying pressure , the materials being a plurality of overlapping metal sheets , the method comprising:dividing a current pattern into two or more steps for welding;before actual welding, performing test welding to store, for each step as a target value, a time variation of an instantaneous amount of heat generated per unit volume and a cumulative amount of heat generated per unit volume that are calculated from an electrical property between electrodes when forming an appropriate nugget by passing current with constant current control; andsubsequently, as actual welding, starting welding using, as a standard, a time variation curve of the instantaneous amount of heat generated per unit volume obtained by the test welding, and when a time variation amount of an instantaneous amount of heat generated per unit volume deviates during any step from the time variation curve by a difference, performing adaptive control welding to control a ...

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Номер записи: 30
14-01-2016 дата публикации

RESISTANCE SPOT WELDING SYSTEM

Номер: US20160008914A1
Автор: Ikeda Rinsei, Okita Yasuaki, SAWANISHI Chikaumi
Принадлежит: JFE STEEL CORPORATION

A resistance spot welding system includes a calculation unit that calculate and store a time variation of an instantaneous amount of heat generated, a division unit that divides a current pattern into a plurality of steps and stores a time variation of the instantaneous amount of heat generated and a cumulative amount of heat generated for each step as a target value, and an adaptive control unit that starts welding upon subsequent actual welding using, as a standard, a time variation curve of the instantaneous amount of heat generated that is stored as the target value, and adjusts welding current and voltage during welding, when a time variation amount of an instantaneous amount of heat generated deviates during any step from the time variation curve by a difference, so as to compensate for the difference during a remaining welding time in the step. 1. A resistance spot welding system for joining materials to be welded by squeezing the materials between a pair of electrodes and passing current while applying pressure , the materials being a plurality of overlapping metal sheets , the system comprising:a calculation unit configured to calculate and store a time variation of an instantaneous amount of heat generated that is calculated from an electrical property between electrodes during test welding, preceding actual welding, that forms an appropriate nugget by passing current with constant current control;a division unit configured to divide, based on the time variation of the instantaneous amount of heat generated, a current pattern into a plurality of steps in accordance with input from an external source after the test welding and to store a time variation of the instantaneous amount of heat generated and a cumulative amount of heat generated for each step as a target value; andan adaptive control unit configured to start welding upon subsequent actual welding using, as a standard, a time variation curve of the instantaneous amount of heat generated that is ...

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Номер записи: 31
15-01-2015 дата публикации

CAPACITIVE WELDER AND METHOD FOR CHARGING SAME

Номер: US20150015212A1
Автор: Arai Kouji, Kadoya Yasuo, Komatsu Akio
Принадлежит: ORIGIN ELECTRIC COMPANY, LIMITED

The capacitive welder includes a charging circuit, a welding transformer, a capacitor, a discharging switching element connected in parallel with a primary winding of the welding transformer and the capacitor that are connected in series, a bypass switching element connected in parallel with the primary winding, welding electrodes connected in parallel with a secondary winding of the welding transformer, and a control circuit for bringing the welding transformer into a reset allowing state by allowing a reset current to flow in the primary winding using the input power introduced through the charging circuit without supplying an ON signal to the bypass switching element, and then supplying the ON signal to the bypass switching element such that the capacitor is charged through the bypass switching element by the input power introduced through the charging circuit. 1. A capacitive welder comprising:a charging circuit having a switching element;a welding transformer having a primary winding and a secondary winding;a capacitor to which an input electric power is introduced via the charging circuit;a discharge switching element connected in parallel with the primary winding and the capacitor, the primary winding being connected in series to the capacitor;a bypass switching element connected in parallel with the primary winding;welding electrodes connected in parallel with the secondary winding of the welding transformer; anda control circuit configured to bring the welding transformer into a reset allowing state by causing a reset current to flow in the primary winding using the input electric power introduced through the charging circuit without supplying an ON signal to the bypass switching element, and then supply the ON signal to the bypass switching element such that the capacitor is charged through the bypass switching element by the input electric power introduced through the charging circuit.2. The capacitive welder according to claim 1 , wherein when the ...

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Номер записи: 32
03-02-2022 дата публикации

Method for Operating a Welding Device, and Welding Robot

Номер: US20220032392A1
Автор: HAUNSTETTER Thomas, REICHENBACH Sebastian
Принадлежит:

A method for operating a welding device for resistance welding includes carrying out a verification measurement by moving electrodes of the welding device toward one another and measuring a force in combination with measuring a distance between the electrodes. Electrode wear is ascertained by using the measured distance. The electrodes or component parts of the electrodes are changed or cleaned depending on the ascertained electrode wear. 112.-. (canceled)13. A method for operating a welding device for resistance welding , comprising the steps of:carrying out a verification measurement by moving electrodes of the welding device toward one another and measuring a force in combination with measuring a distance between the electrodes;ascertaining electrode wear by using the measured distance; andchanging or cleaning the electrodes or component parts of the electrodes depending on the ascertained electrode wear.14. The method according to claim 13 , wherein the welding device includes an electromechanical drive and wherein the force and the distance are measured by the electromechanical drive.15. The method according to claim 13 , wherein the electrodes each comprise a respective electrode cap and an electrode shank.16. The method according to claim 13 , wherein the step of ascertaining the electrode wear further includes comparing the measured distance with a base value and/or a reference value.17. The method according to claim 13 , wherein the step of carrying out the verification measurement is performed after a change of a respective electrode cap of the electrodes to determine a base value for a wear of a respective shank of the electrodes.18. The method according to claim 13 , wherein the step of carrying out the verification measurement is performed after cleaning of a respective electrode cap of the electrodes to determine a reference value for a wear of the respective electrode cap.19. The method according to further comprising the step of regulating the force ...

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Номер записи: 33
17-01-2019 дата публикации

ADDITIVELY MANUFACTURED ARTICLE INCLUDING ELECTRICALLY REMOVABLE SUPPORTS

Номер: US20190015923A1
Автор: "ONeill Christopher F.", Boyer Jesse R.
Принадлежит:

An additively manufactured element includes a support structure connected to an article body. The connectors connecting the support structure to the article body are fused supports. Also disclosed is a method for removing the support structure from the article body by passing an electrical current through the fused supports, thereby breaking the fused supports. 1. An additively manufactured element comprising:a support structure; andan article body connected to the support structure via a plurality of fused supports.2. The additively manufactured element of claim 1 , wherein the plurality of fused supports form a castellated connection to the support structure.3. The additively manufactured element of claim 1 , wherein each of said fused supports has a first cross sectional area at a connection to the component body and a second cross sectional area at a connection to the support structure claim 1 , and wherein the second cross sectional area is larger than the first cross sectional area.4. The additively manufactured element of claim 1 , wherein each of said fused supports is under a spring tension.5. The additively manufactured element of claim 1 , wherein the article body claim 1 , support structure claim 1 , and fuse element are comprised of an electrically conductive material.6. The additively manufactured element of claim 5 , wherein the component body claim 5 , support structure claim 5 , and fused supports comprise a metal material.7. The additively manufactured claim element of claim 5 , wherein the fused supports have a higher resistivity than the component body.8. The additively manufactured element of claim 7 , wherein each of the fused supports in the plurality of fused supports has a higher resistivity than the support structure.9. The additively manufactured element of claim 5 , wherein at least one of the fused supports in the plurality of fused supports further comprise an additional material claim 5 , relative to the support structure and the ...

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Номер записи: 34
21-01-2021 дата публикации

Device for twisting-off and stripping an electrode cap from an electrode cap receptacle and stripping device

Номер: US20210016357A1
Автор: Stefan Fahnenstich
Принадлежит: Lutz Precision KS

A device for twisting-off and stripping an electrode cap from an electrode cap receptacle of an end of a welding gun of a welding robot, the device comprising a cap twisting-off unit and further comprising a stripping device. The stripping device is arranged along an insertion path for an electrode cap receptacle with an electrode cap as seen in front of the cap twisting-off unit and along a discharge path for an electrode cap receptacle without or with electrode cap as seen from behind the cap twisting-off unit. The stripping device can be for use in combination with the cap twisting-off unit.

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Номер записи: 35
21-01-2021 дата публикации

METHODS AND APPARATUS TO DETECT STRAY WELDING-TYPE CURRENT

Номер: US20210016387A1
Автор: Henry Andrew J., Madsen Michael D., Schneider Joseph C., Vogel Bernard J.
Принадлежит:

An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit; a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; and stray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component. 1. A welding-type power supply , comprising:power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit;a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; andstray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component.2. The welding-type power supply as defined in claim 1 , wherein the stray current detection circuitry is configured to detect the stray welding-type current when the measured temperature satisfies a threshold temperature.3. The welding-type power supply as defined in claim 1 , further comprising a second temperature sensor configured to measure a reference temperature claim 1 , wherein the stray current detection circuitry is configured to detect the stray welding-type current when a difference between A) the measured temperature of the at least one component claim 1 , and B) the reference temperature claim 1 , satisfies a threshold difference.4. The welding-type power supply as defined in claim 3 , wherein the reference temperature is an ambient temperature.5. The welding-type power supply as defined in claim 1 , wherein the stray current detection circuitry is configured to output an alarm or alert in response to detecting the stray welding-type current.6. The welding-type power supply as defined in claim 1 , wherein the stray current detection circuitry is ...

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Номер записи: 36
26-01-2017 дата публикации

ULTRASONIC IN-PROCESS MONITORING AND FEEDBACK OF RESISTANCE SPOT WELD QUALITY

Номер: US20170021446A1
Автор: Chertov Andriy M., Ewasyshyn Frank J., Maev Roman Gr., Paille John M.
Принадлежит:

A method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld. Analysis of the spectrum of ultrasonic waves provides the operator with an indication of the size, thickness, location, dynamics of formation and quality of the spot weld. The method presents a fundamentally new physical approach to the characterization of the spot weld quality. Together with transmission mode it includes new modes of operation of ultrasonic probes such as a reflection mode and simultaneous use of transmission and reflection modes, and a new physical interpretation of the signal analysis results. 1. An apparatus for monitoring welding in a resistance welder , the resistance welder including first and second electrodes operating on a weld subject , wherein the weld subject includes at least two metal sheets , the two metal sheets disposed between the first and second electrodes , the apparatus comprising:an ultrasonic probe disposed within the first electrode that generates a burst of acoustic energy that is directed to the weld subject, receives reflected acoustic energy reflected from the weld subject in response to the burst and generates an output signal in response to the reflected acoustic energy, the reflected acoustic energy including a phase inverted acoustic wave reflected from an interface between a liquid zone and a solid portion of the weld subject proximal to the ultrasonic probe; anda computer that receives the output signal, the computer determining a characteristic of the liquid zone that forms during welding based on determining that the output signal includes the phase inverted acoustic wave, the computer determining the characteristic based upon a change in slope of a curve of a time of flight value of the phase inverted acoustic wave, the computer determining a thickness of the liquid zone based upon a distance ...

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Номер записи: 37
10-02-2022 дата публикации

MANUFACTURING METHOD FOR JOINED BODY, WELDING METAL BODY, AND JOINING ELEMENT

Номер: US20220040781A1
Автор: Aoyama Shunzo, KONDO Yoshiteru
Принадлежит: Ahresty Corporation

A manufacturing method for joined bodies that allows galvanic corrosion to be reduced is provided. The method is for manufacturing a joined body obtained by joining together a mating member made of ferrous metal and a non-ferrous metal material. The method includes: a press fit step of press-fitting a joining element made of ferrous metal into a predetermined surface of the non-ferrous metal material; and a welding step of forming a melted portion between an exposed portion of the joining element press-fitted into the non-ferrous metal material and the mating member. After the press fit step, a part of the joining element is exposed from the predetermined surface and the remaining part of the joining element is not exposed and is buried in the non-ferrous metal material. The remaining part of the joining element includes a lodging portion having a surface facing to the predetermined surface. 1. A manufacturing method for a joined body obtained by joining together a mating member made of ferrous metal and a non-ferrous metal material having a predetermined surface facing to the mating member , comprising:a press fit step of press-fitting a joining element made of ferrous metal into the predetermined surface of the non-ferrous metal material; anda welding step of forming a melted portion between an exposed portion of the joining element press-fitted into the non-ferrous metal material and the mating member,wherein after the press fit step, a part of the joining element is exposed from the predetermined surface and the remaining part of the joining element is not exposed and is buried in the non-ferrous metal material, andwherein the remaining part of the joining element includes at least one lodging portion having a surface facing to the predetermined surface.2. The manufacturing method for the joined body according to claim 1 , comprising:a heating step of heating a portion of the non-ferrous metal material prior to the press fit step into which the joining element ...

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Номер записи: 38
26-01-2017 дата публикации

DISSIMILAR MATERIAL JOINING STRUCTURE AND PRODUCING METHOD OF DISSIMILAR MATERIAL JOINED BODY

Номер: US20170023038A1
Автор: IZUHARA Tsuyoshi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A dissimilar material joining structure includes: a plate-shaped resin member; a plate-shaped metallic member; and a metallic rivet. The rivet includes a shaft, and a head integral with a first end of the shaft, and disposed outside a hole of the resin member hole. The shaft includes: a pillar; an enlarged diameter portion; and a punching portion that is joined to the metallic member via a weld. The hole of the resin member includes: a small-diameter hole portion adjacent to the pillar, and having an inner diameter equal to a diameter of the enlarged diameter portion; and a large-diameter hole portion adjacent to an outer circumference of the punching portion, and having an inner diameter greater than the diameter of the enlarged diameter portion. 1. A dissimilar material joining structure comprising:a resin member having a plate shape, the resin member including a hole extending through the resin member;a metallic member having a plate shape, the metallic member including a portion that faces the hole and an outer circumference of the hole; anda metallic rivet including: a shaft disposed within the hole, the shaft having an axial direction extending in a plate thickness direction of the resin member; and a head integral with a first end in the axial direction of the shaft, the head disposed outside the hole,whereinthe rivet is configured such that a brim portion of the head is in contact with a surface of the resin member, a second end in the axial direction of the shaft is joined to the metallic member via a weld, and the brim portion holds the resin member between the brim portion and the metallic member,the shaft includes: a pillar extending from a center of the head; an enlarged diameter portion that is continuous with the pillar and having a diameter greater than a diameter of the pillar; and a punching portion joined to the metallic member via the weld,the hole includes: a small-diameter hole portion that is adjacent to an outer circumference of the pillar, ...

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Номер записи: 39
23-01-2020 дата публикации

WELDING DETERMINATION DEVICE FOR STRIP-SHAPED SHEETS, AND WELDING DETERMINATION METHOD

Номер: US20200023457A1
Автор: MITSUOKA Ryosuke, MITSUZUMI Tatsuki, NAKAYA Takafumi, OKI Yuichiro, SAKUMOTO Motoaki
Принадлежит:

The purpose is to determine occurrence of expulsion in seam welding with high accuracy. A welding determination device includes: a measurement unit configured to measure temperature of a joint portion between strip-shaped sheets (for example, steel strips) to be joined by seam welding; and a determination unit configured to, based on a measurement result by the measurement unit, calculate an average temperature Tand a temperature difference ΔT of the joint portion and, when the average temperature Tis more than or equal to a first threshold value that is set according to the sheet thickness of each of the strip-shaped sheets and the temperature difference ΔT is more than or equal to a second threshold value, determine that expulsion has occurred at the joint portion. 1. A welding determination device for strip-shaped sheets comprising:a measurement unit configured to measure temperature of a joint portion between strip-shaped sheets to be joined by seam welding; anda determination unit configured to, based on a measurement result by the measurement unit, calculate an average temperature and a temperature difference of the joint portion and, when the average temperature is more than or equal to a first threshold value that is set according to the sheet thickness of each of the strip-shaped sheets and the temperature difference is more than or equal to a second threshold value, determine that expulsion has occurred at the joint portion and, when the average temperature is less than the first threshold value or the temperature difference is less than the second threshold value, determine that no expulsion has occurred at the joint portion.2. A welding determination method for strip-shaped sheets comprising:a measurement step of measuring temperature of a joint portion between strip-shaped sheets to be joined by seam welding;a calculation step of, based on a measurement result in the measurement step, calculating an average temperature and a temperature difference of ...

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Номер записи: 40
23-01-2020 дата публикации

SYSTEMS AND METHODS FOR DISSIMILAR MATERIAL WELDING

Номер: US20200023471A1
Автор: Bogue William, Pelletier Carl E
Принадлежит: UNITED TECHNOLOGIES CORPORATION

A system is provided comprising a hardened stud body and an unhardened stud subunit coupled to the hardened stud body. The hardened stud body may comprise a first composition having by weight between 17% and 21% chromium, between 2.8% and 3.3% molybdenum, between 50% to 55% nickel, and between 4.75% and 5.5% niobium. The unhardened stud subunit may comprise a second composition having by weight between 20% and 23% chromium, between 8% and 10% molybdenum, at least 58% nickel, and between 3.15% and 4.15% niobium. 1. A method comprising:welding an unhardened stud body comprising a first composition to an unhardened stud subunit comprising a second composition, to form a stud having an unhardened subunit portion; andheat treating the stud.2. The method of claim 1 , wherein the first composition comprises by weight between 17% and 21% chromium claim 1 , between 2.8% and 3.3% molybdenum claim 1 , between 50% to 55% nickel claim 1 , and between 4.75% and 5.5% niobium.3. The method of claim 2 , wherein the second composition comprises by weight between 20% and 23% chromium claim 2 , between 8% and 10% molybdenum claim 2 , at least 58% nickel claim 2 , and between 3.15% and 4.15% niobium.4. The method of claim 2 , wherein the first composition conforms to ASTM A1014/A1014M.5. The method of claim 3 , wherein the second composition conforms to ASTM B444.6. The method of claim 1 , wherein the heat treating comprises a precipitation heat treatment.7. The method of claim 1 , wherein welding the unhardened stud body to the unhardened stud subunit comprises at least one of friction welding claim 1 , explosive welding claim 1 , resistance welded claim 1 , laser welding claim 1 , or gas tungsten arc welding.8. The method of claim 1 , wherein welding the stud to the substrate comprises capacitor discharge welding.9. The method of claim 1 , wherein the substrate comprises a third composition having by weight between 20% and 23% chromium claim 1 , between 8% and 10% molybdenum claim 1 , ...

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Номер записи: 41
28-01-2021 дата публикации

RESISTANCE SPOT WELDING METHOD AND WELD MEMBER PRODUCTION METHOD

Номер: US20210023646A1
Автор: Ikeda Rinsei, Matsuda Hiroshi, SAWANISHI Chikaumi
Принадлежит: JFE STEEL CORPORATION

A resistance spot welding method comprises: performing test welding; and performing actual welding after the test welding. The test welding is performed under each of two or more welding conditions. In the actual welding, preliminary current passage is performed by constant current control in the same current pattern as in the preliminary current passage of the test welding, an electrical property between the electrodes in the preliminary current passage in the actual welding and an electrical property between the electrodes stored in the preliminary current passage in the test welding are compared for each welding condition to set a target in main current passage in the actual welding, and thereafter adaptive control welding is performed to control a current passage amount as the main current passage. 1. A resistance spot welding method of squeezing , by a pair of electrodes , parts to be welded which are a plurality of overlapping metal sheets , and passing a current while applying an electrode force to join the parts to be welded , the resistance spot welding method comprising:performing test welding; andperforming actual welding after the test welding,wherein the test welding is performed under each of two or more welding conditions,in the test welding, for each of the welding conditions:preliminary current passage is performed by constant current control in a same current pattern, and an electrical property between the electrodes in the preliminary current passage is stored; andthereafter main current passage is performed by constant current control, and a time variation curve of an instantaneous amount of heat generated per unit volume and a cumulative amount of heat generated per unit volume that are calculated from an electrical property between the electrodes in forming an appropriate nugget are stored, andin the actual welding:preliminary current passage is performed by constant current control in the same current pattern as in the preliminary current ...

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Номер записи: 42
28-01-2021 дата публикации

Welder Comprising a Detachable Arm Provided with a Rotationally Mobile Part Supporting an Electrode

Номер: US20210023647A1
Автор: BOUYGUES Bruno, GABILLARD Mickaël
Принадлежит:

A resistance welder, which includes a clamp for supporting a detachable arm, the arm being constituted by a fixed part supporting a fixed electrode and a rotationally mobile part supporting a mobile electrode. The electrodes are intended to be crossed by an electrical current. The mobile arm of the clamp is pushed in its rotational motion by a thruster so that the extremities of the electrodes approach each other and grip the elements to be welded. The clamp further includes a shift measurement sensor, the value measured by this sensor being proportional to the distance between the extremities of the electrodes. It is thus easy to measure the distance between the electrodes and the measurement made on the piston can be used for other types of arms. 1. A resistance welder comprising:a clamp; anda detachable arm supported by the clamp, said arm being constituted by a fixed part supporting a fixed electrode and a rotationally mobile part supporting a mobile electrode, the electrodes being configured to be crossed by an electrical current, wherein the rotationally mobile part of the detachable arm of the clamp is pushed in its rotational motion by a thruster so that extremities of the fixed and mobile electrodes approach each other and grip elements to be welded; anda shift measurement sensor, which measures a value that is proportional to a distance between the extremities of the fixed and mobile electrodes.2. The resistance welder according to claim 1 , further comprising a slider provided with a cylinder pushed in translation by a head of the thruster claim 1 , said cylinder comprising first and second diametrically opposite rings that get housed in oblong holes situated on each side of flanks of the mobile arm to provide for angular alignment of the slider during shifting of the head of the thruster.3. The resistance welder according to claim 1 , further comprising a locking mechanism which locks the detachable to affix the detachable arm to the clamp claim 1 , this ...

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Номер записи: 43
24-04-2014 дата публикации

SHARPS CONTAINER

Номер: US20140110448A1
Автор: Phan Vu
Принадлежит: BECTON, DICKINSON AND COMPANY

A process of manufacturing a sharps container and a method of storing needles are disclosed. The sharps container utilizes a blocking member which does not interfere with a needle being inserted into the sharps container, and a latch mechanism which does not require a protruding tab. The latch mechanism requires at least a dual action to open the sharps container, and limits the movement required for opening the sharps container. 1. A sharps container comprising:a space which accommodates at least one needle therein;an opening dimensioned to receive at least one needle therethrough, to be accommodated in the space;and a blocking member comprising a freely movable body which blocks the opening when the opening is positioned so that at least one needle accommodated in the space is urged towards the opening, and otherwise, does not block the opening.2. The sharps container as claimed in claim 1 , further comprising a breaking member which applies a force to a needle received in the opening to break off at least a portion of the needle which has passed through the opening claim 1 , the portion to be accommodated in the space.3. The sharps container as claimed in claim 1 , whereinthe space comprises an internal housing; the opening provides access for the at least one needle to the internal housing; andthe freely movable body comprises a ball which is movable within the internal housing.4. The sharps container as claimed in claim 3 , wherein the internal housing further comprises a first and a second retaining wall positioned on a first interior surface of the internal housing to accommodate the ball there between and to guide the ball between a first position where the ball blocks the opening and a second position where the ball does not block the opening.5. The sharps container as claimed in claim 4 , wherein the internal housing further comprises a third retaining wall positioned to accommodate the ball in the second position.6. The sharps container as claimed in ...

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Номер записи: 44
01-02-2018 дата публикации

Discharge Welding System

Номер: US20180029156A1
Автор: Banwell James R., Dunn Randy B.
Принадлежит:

A discharge welding system for discharge welding a welding member such as a stud to a weld surface such as a battery terminal or strap. The discharge welding system generally includes a power source which is electrically connected to both a clamp and a retainer such as a collet. The clamp is utilized to secure a conduction member such as a washer against a weld surface such as a battery terminal or strap. The retainer is utilized to removably retain a welding member such as a stud which is adapted to be welded to the weld surface. A weld actuator is adapted to lower the retainer such that the welding member contacts the conduction member to complete an electrical circuit as an electrical current is discharged by the power source. The welding member is welded to the weld surface by the electrical current discharge. 1. A welding system , comprising:a conduction member adapted to contact a weld surface;a welding member adapted to be welded to the weld surface;a power source for providing an electrical current;a clamp adapted to transfer the electrical current from the power source to the conduction member, wherein the clamp is electrically connected to the power source;a retainer adapted to transfer electrical current from the power source to the welding member, wherein the retainer is electrically connected to the power source, wherein the retainer is adapted to removably retain the welding member to be welded to the weld surface; anda weld actuator adapted to lower the welding member to contact the conduction member, wherein the welding member is adapted to be welded onto the weld surface when the welding member contacts the conduction member.2. The welding system of claim 1 , wherein the weld surface comprises a battery terminal.3. The welding system of claim 2 , wherein the welding member comprises a stud.4. The welding system of claim 1 , wherein the conduction member comprises a washer.5. The welding system of claim 1 , wherein the clamp comprises an anode ...

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Номер записи: 45
31-01-2019 дата публикации

SPOT-WELDED JOINT AND SPOT WELDING METHOD

Номер: US20190030637A1
Автор: Furusako Seiji, Hamatani Hideki, KAWATA Hiroyuki, Miyazaki Yasunobu, OKADA Tohru, Wakabayashi Chisato, WATANABE Fuminori
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates (A, B) and performing spot welding on the steel plates, including a high-strength steel plate whose tensile strength is 750 (MPa) to 2500 (MPa), being at least one piece of steel plate out of the plurality of pieces of steel plates, in which a carbon equivalent Ceq of the high-strength steel plate is 0.20 mass % to 0.55 mass %, and ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (μm) or more exist in a square region within a heat-affected zone of a cross section that passes through a center of a welding mark, and is cut along a plate thickness direction of the steel plates (A, B), a cross tensile strength of the spot-welded joint to be formed is improved. 1at least one piece of steel plate out of the plurality of pieces of steel plates is a high-strength steel plate whose tensile strength is 750 MPa to 2500 MPa, whereina carbon equivalent Ceq of the high-strength steel plate represented by the following expression (A) is 0.20 mass % to 0.55 mass %,the spot welding method comprising:{'sub': f', 'f', 'E, 'performing pre-energization of energizing welding electrodes with a pre-energization current I(kA) satisfying the following expression (C) for a pre-energization time t(msec) satisfying the following expression (D), in a state where the overlapped plurality of pieces of steel plates are pressurized by the welding electrodes at a pressurizing force F(N) satisfying the following expression (B);'}{'sub': C', 'E, 'performing, after the pre-energization is finished, cooling after pre-energization of cooling the plurality of pieces of steel plates for a cooling time after pre-energization t(msec) satisfying the following expression (E) while retaining the pressurizing force F(N) satisfying the following expression (B);'}{'sub': W', 'E, 'performing, after the cooling after pre-energization is finished, main welding ...

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Номер записи: 46
30-01-2020 дата публикации

METHOD FOR MANUFACTURING DISSIMILAR METALS-JOINED ARTICLE AND JOINING APPARATUS

Номер: US20200030907A1
Автор: Kadoya Yasuo
Принадлежит:

A method for manufacturing a joined article, the method including providing a first metal member E (ST), providing a second metal member D, the second metal member D reaching a melting point before the first metal member E when the second metal member D is brought into contact with the first metal member E and an electric current is applied between the two metal members (ST), preheating the first metal member E using a high-frequency induced electric current (ST), applying pressure on the first metal member E and the second metal member D (ST), applying an electric current between the first metal member E and the second metal member D at a timing at which a temperature of the first metal member E has reached a prescribed temperature TS due to the preheating (ST), and joining the first and second metal members E and D through the application of pressure and the application of an electric current (ST, ST). Through the adoption of such a method, the present invention provides: a method for manufacturing a joined article in which joint length is adequate even when metals are joined together that are such that, for example, one reaches a melting point before the other during electric current joining; and a joining apparatus for joining such metal members together. 1. A method for manufacturing a joined article obtained by joining joint surfaces of first and second metal members , the joint surface of one of the metal members being a leading end portion-outer circumferential surface of the metal member , the other of the metal members having a hole , the hole being defined by an inner circumferential surface of the other metal member , the inner circumferential surface being the joint surface of the other metal member , the method comprising:providing the first metal member;providing the second metal member, the second metal member reaching a melting point before the first metal member when the second metal member is brought into contact with the first metal member and an ...

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Номер записи: 47
05-02-2015 дата публикации

RESISTANCE WELDING WITH MINIMIZED WELD EXPULSION

Номер: US20150034609A1
Автор: Chen Guanlong, LAI Xinmin, Wang Pei-Chung, Zhang Yansong, Zhao Yang-Yang
Принадлежит:

A system for forming a weld nugget in a metal work piece includes a power supply, actuator, electrodes, and controller. The actuator delivers a variable electrode force to the work piece in response to a force command. The controller executes a method by transmitting a welding current command to the power supply to cause the power supply to output a welding current to the electrodes. The controller transmits the force command to the actuator to apply the variable electrode force, via the electrodes, to the work piece at a first force level. The variable electrode force increases from a second force level immediately upon conclusion of a first duration to minimize weld expulsion. The second force level commences at a point in time in the dynamic resistance profile at which a dynamic resistance value of the work piece decreases at a threshold rate during formation of the weld nugget. 1. A system for forming a weld nugget in a metal work piece , the system comprising:a welding power supply;an actuator;a pair of electrodes operatively connected to the welding power supply and to the actuator, wherein the actuator is operable to deliver a variable electrode force to the work piece via the pair of electrodes in response to a force command; transmit a welding current command to the welding power supply to thereby cause the welding power supply to output a welding current to the pair of electrodes, thereby forming molten metal from the metal work piece;', 'transmit the force command to the actuator to apply the variable electrode force, via the pair of electrodes, to the work piece at a first force level for a first duration; and', 'increase the variable electrode force from the first force level to a second force level immediately upon conclusion of the first duration, thereby minimizing expulsion of the molten metal;, 'a controller having a processor and computer-readable memory, wherein the memory includes a calibrated dynamic resistance profile for the work piece and ...

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Номер записи: 48
08-02-2018 дата публикации

METHODS AND JOINTS FOR WELDING SHEETS OF DISSIMILAR MATERIALS

Номер: US20180036828A1
Автор: ABKE Timothy A., DETWILER Duane T.
Принадлежит:

A method for welding a stack of sheets having a plurality of sheets of different materials is provided. In an aspect, the stack of sheets includes an aluminum sheet and a galvanneal steel sheet. In an aspect, the method includes resistively spot welding the galvanneal sheet to a hot-stamped steel sheet placed between the aluminum sheet and the galvanneal sheet, the sheet of hot-stamped steel including stress relief sections. The method further includes placing a metal foil on the aluminum sheet and vaporizing the metal foil to project portions of the aluminum sheet through the stress relief sections of the hot-stamped steel sheet to weld the portions of the aluminum sheet to the galvanized steel sheet. In another aspect, the method includes placing the metal foil on a raised portion of the aluminum sheet and projecting the raised portion of the aluminum onto the galvanneal steel sheet. 1. A method of performing welding , the method comprising:applying a current to a stack of sheets to resistively spot weld a first sheet of the stack of sheets to a second sheet of the stack of sheets, wherein the second sheet includes at least one cut out section;placing at least one metal foil on a first side of a third sheet of the stack of sheets; andvaporizing the at least one metal foil to project at least one portion of the third sheet through the at least one cut out section of the second sheet to the first sheet to form a weld.2. The method of claim 1 , further comprising at least one of:removing a first coating from the first sheet;removing a second coating from the second sheet; orcladding the third sheet with a transition material.3. The method of claim 1 , wherein applying the current further comprises:applying the current to the stack of sheets to resistively spot weld a first side of the first sheet to a first side of the second sheet.4. The method of claim 1 , wherein vaporizing the at least one metal foil further comprises:forming the weld between the first side of ...

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Номер записи: 49
24-02-2022 дата публикации

SEALING METHOD FOR LIQUID INLET PORT OF POWER STORAGE DEVICE

Номер: US20220055143A1
Автор: Asada Takahiro, Nagamine Hidemasa, Wada Keiji
Принадлежит:

A sealing method that uses an electrostatic energy storage welding machine which includes an energy storage section including a plurality of energy storage parts is provided. A method of sealing a liquid inlet port of a power storage device includes burring in advance a through-hole of the liquid sealing port to raise a hole edge of the through-hole into a form of a projection, wherein the liquid sealing port of the power storage device to be sealed with electrolyte contained therein corresponds to an object to be welded; placing a spherical body that is a lid body on the projection; and performing resistance welding between the projection and the spherical body to seal the liquid inlet port. 1. A method of sealing a liquid inlet port of a power storage device , the method comprising:by using an electrostatic energy storage welding machine including an energy storage section including a plurality of energy storage parts, the electrostatic energy storage welding machine being configured to individually charge and discharge the plurality of energy storage parts to stabilize voltages of the energy storage parts having variation in performance and to perform resistance welding of an object to be welded by applying power produced by a stabilized set voltage and an electric current while applying pressure to the object to be welded between welding electrodes,burring in advance a through-hole of a liquid sealing port of the power storage device to raise a hole edge of the through-hole into a form of a projection, wherein the liquid sealing port of the power storage device through which an electrolyte is introduced into the power storage device is the object to be welded;placing a spherical body that is a lid body on the projection; andperforming resistance welding between the projection and the spherical body to seal the liquid inlet port.2. The method of sealing the liquid inlet port of the power storage device as claimed in claim 1 , wherein the electrostatic energy ...

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Номер записи: 50
18-02-2016 дата публикации

SYSTEMS AND METHODS FOR IMPROVING WELD STRENGTH

Номер: US20160045978A1
Автор: Wang Pei-Chung
Принадлежит:

A method includes forming a first pocket in a first sheet of material and a second pocket in a second sheet of material, pressing the first pocket and the second pocket together at a nonlinear interface, and welding material of the first pocket and the second pocket at the interface. 1. A method , comprising:forming a first pocket in a first sheet of material and a second pocket in a second sheet of material;pressing the first pocket and the second pocket together at a nonlinear interface, wherein the first pocket and the second pocket are pressed between a first tooling element and a second tooling element, wherein the first tooling element includes a convex tooling surface and the second tooling element includes a concave tooling surface; andmelting first material of the first pocket and second material of the second pocket at the interface, wherein the first material and the second material is melted using at least one of the first tooling element and the second tooling element, and wherein the material is configured to solidify, following the melting, to form a joint at the nonlinear interface.2. The method of claim 1 , the first pocket comprising a first concave pocket surface and a first convex pocket surface claim 1 , the second pocket comprising a second concave pocket surface and a second convex pocket surface claim 1 , the nonlinear interface including a point of contact between the first convex pocket surface and the second concave pocket surface.3. The method of claim 2 , the pressing including contacting the first concave surface with the convex tooling surface and contacting the second convex surface with the concave tooling surface.4. The method of claim 2 , the pressing comprising receiving the first tooling element in the first pocket and receiving the second pocket in the second tooling element.5. The method of claim 1 , the forming comprising forming the first pocket and the second pocket using the first tooling element and the second tooling ...

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Номер записи: 51
16-02-2017 дата публикации

WELDING GUN

Номер: US20170043427A1
Автор: MIWA Hiroshi, Teragaito Yohei
Принадлежит: HONDA MOTOR CO., LTD.

A welding gun equipped with a retaining unit, which includes a first retaining member and a second retaining member, and retains a stationary gun arm and a movable gun arm. A retaining hole for retaining the stationary gun arm, guide grooves for insertion of rolling members provided on an aim holder that retains the movable gun arm, connecting member insertion holes into which connecting members connecting the first retaining member and the second retaining member are inserted, and a retained member insertion hole for inserting a retained member retained by a moving member that moves the retaining unit to a welding operation location, are formed in the first retaining member and the second retaining member, and the regions where these components are formed are set as thick-walled regions having a greater thickness than other regions. Thus, adequate rigidity is ensured while avoiding an increase in weight. 1. A welding gun equipped with a retaining unit that retains a stationary gun arm , and a movable gun arm configured to approach toward and separate away from the stationary gun arm , wherein:the retaining unit comprises a first retaining member and a second retaining member sandwiching an arm holder therebetween, the arm holder configured to retain the movable gun arm;in each of the first retaining member and the second retaining member along a thickness direction thereof, there are formed retaining holes configured to retain the stationary gun arm , a guide groove in which rolling members provided on the arm holder are inserted, connecting member insertion holes in which connecting members configured to connect the first retaining member and the second retaining member are inserted, and a retained member insertion hole in which a retained member is inserted, the retained member retained by a moving device configured to move the retaining unit to a welding operation location;regions where the retaining holes, the guide groove, the connecting member insertion holes ...

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Номер записи: 52
15-02-2018 дата публикации

RESISTANCE SPOT WELDING METHOD AND METHOD FOR MANUFACTURING RESISTANCE SPOT WELDED JOINT

Номер: US20180043459A1
Автор: Ikeda Rinsei, Matsuda Hiroshi, SAWANISHI Chikaumi
Принадлежит: JFE STEEL CORPORATION

A resistance spot welding method of squeezing a predetermined sheet combination by a pair of electrodes and passing a current while applying an electrode force to join the sheet combination includes: performing test welding; and performing actual welding after the test welding, wherein in each of the test welding and the actual welding, a current pattern is divided into two or more steps including a first current passage step and a second current passage step subsequent to the first current passage step, and, in the actual welding, a current that causes no expulsion is selected to perform welding by constant current control in the first current passage step, and adaptive control welding is performed from the subsequent second current passage step onward. 1. A resistance spot welding method of squeezing , by a pair of electrodes , a sheet combination in which a thin sheet is overlapped on at least one face of two or more overlapping thick sheets , and passing a current while applying an electrode force to join the sheet combination , the resistance spot welding method comprising:performing test welding; andperforming actual welding after the test welding,wherein in each of the test welding and the actual welding, a current pattern is divided into two or more steps including a first current passage step and a second current passage step subsequent to the first current passage step,in the test welding, an amount of time variation of an instantaneous amount of heat generated per unit volume as a time variation curve and a cumulative amount of heat generated per unit volume are stored for each of the current passage steps, both the amount of time variation and the cumulative amount of heat being calculated from an electrical property between the electrodes in the case of forming an appropriate nugget by passing a current by constant current control, andin the actual welding, a current that causes no expulsion is selected to perform welding by constant current control in ...

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Номер записи: 53
15-02-2018 дата публикации

Welded article and method for manufacturing welded article

Номер: US20180043460A1
Автор: Hiroji Sasaki, Toshihiko Hayashi
Принадлежит: Origin Electric Co Ltd

To enable a first welding target member including a projection on a welding target portion having short sides and long sides and a second welding target member to be bonded by resistance welding with high welding strength. A manufacturing method for manufacturing a welded article by bonding a first welding target member including an elongated projection portion on a welding target portion having short sides and long sides that are longer than the short sides and a second welding target member by resistance welding, in which the projection portion of the first welding target member is subdivided by forming subdividing grooves extending in the direction of the short sides in the projection portion to reduce the influence of skin effect on the welding current flowing through the subdivided projection portions and improve the uniformity of the current values in the direction of the long sides.

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Номер записи: 54
15-02-2018 дата публикации

RESISTANCE SPOT WELDING DEVICE

Номер: US20180043461A1
Автор: Ikeda Rinsei, Okita Yasuaki, Taniguchi Koichi
Принадлежит: JFE STEEL CORPORATION

A resistance spot welding device for welding at least two overlapping steel sheets held between a pair of welding electrodes is provided. The resistance spot welding device includes the pair of electrodes, an electrode force gauge that measures an electrode force, and a controller that controls an electric current supply to the electrodes according to the electrode force measured by the electrode force gauge. The controller controls the electric current such that the electrode force F measured by the electrode force gauge after the start of the electric current supply is adjusted to a prescribed value. 3. The resistance spot welding device according to claim 1 , wherein the controller controls the electric current supply such that the period of a last (N+1)th repetition of the electric current supply is from 100 ms to 300 ms inclusive.4. The resistance spot welding device according to claim 1 , further comprising a gun arm to which the pair of electrodes is mounted claim 1 ,wherein the electrode force gauge is a strain gauge that measures strain of the gun arm.5. The resistance spot welding device according to claim 2 , wherein the controller controls the electric current supply such that the period of a last (N+1)th repetition of the electric current supply is from 100 ms to 300 ms inclusive.6. The resistance spot welding device according to claim 2 , further comprising a gun arm to which the pair of electrodes is mounted claim 2 ,wherein the electrode force gauge is a strain gauge that measures strain of the gun arm.7. The resistance spot welding device according to claim 3 , further comprising a gun arm to which the pair of electrodes is mounted claim 3 ,wherein the electrode force gauge is a strain gauge that measures strain of the gun arm.8. The resistance spot welding device according to claim 5 , further comprising a gun arm to which the pair of electyrodes is mounted claim 5 ,wherein the electrode force gauge is a strain gauge that measures strain of the gun ...

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Номер записи: 55
15-02-2018 дата публикации

Weld Gun Part Clamp Device And Method

Номер: US20180043462A1
Автор: Kilibarda Velibor
Принадлежит:

A combination component handling and connecting device connectable to a multi-axis robot for use in moving and connecting components and subassemblies includes a housing and an actuator fixedly connected to the housing. The actuator includes an actuating link movable from a first position to a second position. Connected to the actuating link is an end effector for concurrent movement with the actuating link. The component handling and connecting device includes a clamp having a first jaw and a second jaw. The second jaw is connected to the actuating link for selectively moving the second jaw toward the first jaw operative to engage a component. 120-. (canceled)21. A method for component handling and connecting of components through through use of a multi-axis robot having an end effector , the end effector having a first clamp jaw and a second clamp jaw , the method comprising:moving an end effector actuator connected to one of a first clamp jaw or a second clamp jaw in a first direction to a clamp open position defining a clamp throat;maneuvering the end effector to position a first component and a second component in the clamp throat;moving the end effector actuator in a second direction to a clamp closed position, the clamp engaging the first component and the second component with the first clamp jaw and the second clamp jaw; andfixedly connecting the first component and the second component together by the first or the second clamp jaw in the clamp closed position.22. The method of further comprising:engaging one of the first component or the second component in a support member positioned in the clamp throat.23. The method of wherein moving the end effector actuator to the clamp closed position and connecting the first component and the second component comprises a single actuator.24. The method of wherein the step of fixedly connecting the first and the second component together comprises welding the first and the second component together.25. The method of ...

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Номер записи: 56
19-02-2015 дата публикации

LASER WELDING OF NICKEL TITANIUM ALLOYS

Номер: US20150048060A1
Автор: Eskuri Alan, Maeso Jose
Принадлежит: Convidien LP

A system of forming a bimetal medical device from dissimilar metal components includes a first metal component, a second metal component, a retaining device, a compression mechanism, and an energy source. A method of forming the bimetal medical device with the system includes applying a first pulse of laser energy to a joint formed between the first and second metal components retained by the retaining device and compressing the first and second metal components together with the compression mechanism to form a welded region. 1. A system of forming a bimetal medical device , which comprises:a first metal component defining a first longitudinal axis and including a first end portion;a second metal component defining a second longitudinal axis and including a second end portion;a retaining device configured to retain the first and second end portions of the first and second metal components in an abutting relationship to form a butt joint within a welding window;a compression mechanism configured to apply an axially inward force to move the first and second metal components axially together; and [{'br': None, 'Joules=5.9DX'}, {'br': None, 'i': D', 'X, 'wherein =diameter (mm) of the first metal component and =0.5−1.5.'}], 'an energy source configured to apply energy to the first and second end portions of the first and second metal components within the welding window, the energy applied being determined by the equation2. The system according to claim 1 , wherein the first metal component comprises a nickel-titanium alloy.3. The system according to claim 1 , wherein the second metal component comprises a cobalt chromium alloy.4. The system according to claim 1 , wherein the second metal component comprises a stainless steel alloy.5. The system according to claim 1 , wherein the compression mechanism is adapted to move the first and second metal components a distance that is about 0.5 to about 2 times a diameter of the first metal component.6. The system according to ...

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Номер записи: 57
24-02-2022 дата публикации

RESISTANCE WELDING FASTENER, APPARATUS AND METHODS

Номер: US20220059952A1
Автор: Bergstrom Daniel, Spinella Donald J.
Принадлежит:

An apparatus and method for fastening dissimilar materials like steel, plastic and aluminum. A resistance welding fastener having multiple layers may be used with or without a sealant. The fastener may be used to form an aluminum covered steel laminate via a hemming pattern of attachment. The fastener may have a solid shaft or have an extended reach and have features for interacting with the welding electrode. A variety of electrode tips may be employed to cooperate with the fastener. 1. A method for fastening a first material to a second material using electrical resistance welding , comprising:placing the first and second materials together in physical contact to form a stack; a cap,', 'a shaft extending from the cap and', 'an end distal to the cap,', 'the cap having an electrode receiving surface with a radiused portion;, 'placing an electrically conductive fastener that is weldable to the second material in contact with the stack, the fastener having'}placing the stack between a pair of electrodes, a first electrode of the pair of electrodes having a radiused portion;placing the first electrode against the radiused portion of the electrode receiving surface;placing another of the pair of electrodes in electrical continuity with the second material;applying an electrical potential across the stack, inducing a current to flow through the fastener and the stack and causing resistive heating;urging the fastener toward the second material; andwelding the fastener to the second material, the first material being captured between the cap and the second material after the end is welded to the second material.2. The method of claim 1 , wherein the first electrode is at an orientation offset from a perpendicular orientation relative to the second material during at least one of the steps of applying urging or welding.3. The method of claim 2 , wherein the offset is up to and including 30 degrees.4. The method of claim 1 , wherein the first and second materials are ...

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Номер записи: 58
13-02-2020 дата публикации

DEVICES AND METHODS FOR NEEDLE DISPOSAL

Номер: US20200046446A1
Автор: KROMHOLZ Leo Ronald
Принадлежит:

Provided herein are devices, systems, and methods for disposal of needles. In particular, provided herein are devices, systems, and methods for safe and efficient disposal of medical and research needles. 1. A needle disposal device , comprising:a) a grinder comprising a grinding surface, wherein said grinder is operably linked to a motor and shaft configured to turn said grinder;b) a housing enclosing said grinder;c) an access port configured to align a needle with said grinder; andd) a waste containment component configured to retain needed debris.2. The device of claim 1 , wherein said grinder is a disc or drum.3. The device of claim 1 , wherein said grinder comprises a material selected from the group consisting of ceramic claim 1 , metal claim 1 , aluminum oxide particles claim 1 , silicone carbide claim 1 , and diamond.4. The device of claim 1 , wherein said motor is powered by AC or DC.5. The device of claim 4 , wherein said DC is provided by a disposable or rechargeable battery.6. The device of claim 1 , wherein said access port further comprises one or more air tight seals.7. The device of claim 6 , wherein said seal is rubber or silicon.8. The device of or claim 6 , wherein said seal comprises one or more access holes.9. The device of claim 1 , wherein said waste containment component comprises at least one magnet.10. The device of claim 9 , wherein said at least one magnet is a permanent or temporary magnet.11. The device of claim 9 , wherein said at least one magnet is at least two magnets.12. The device of claim 1 , wherein said waste containment component further comprises a removable cap.13. The device of claim 12 , wherein said cap comprises an air tight seal.14. The device of claim 1 , wherein said at least one magnet is disposable or re-usable.15. The device of claim 1 , wherein said waste containment component is removable.16. The device of claim 15 , wherein said waste containment component is disposable.17. The device of claim 1 , wherein said ...

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Номер записи: 59
25-02-2021 дата публикации

Expulsion sensing method and expulsion sensing device in electric resistance welding

Номер: US20210053142A1
Автор: Akira NAWAHARA, Daisuke NAKAZAKI
Принадлежит: Mazda Motor Corp

An expulsion sensing device includes a spot welding device 2 that pressurizes, via a pair of electrodes 33 and 34, a workpiece W in which a plurality of metal plate members is superposed and welds the workpiece W by passing electricity between the pair of electrodes 33 and 34 while maintaining a predetermined pressurizing force, an operation control unit 42 that detects an interelectrode distance between the pair of electrodes 33 and 34 at predetermined time intervals, a calculation unit 51 that detects a temporal change rate of the detected interelectrode distance, and a determination circuit unit 52 that determines occurrence of expulsion when the detected change rate in an approaching direction of the pair of electrodes 33 and 34 is equal to or more than a predetermined threshold

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Номер записи: 60
26-02-2015 дата публикации

RESISTANCE SPOT WELDING STEEL AND ALUMINUM WORKPIECES USING ELECTRODE WELD FACE COVER

Номер: US20150053654A1
Автор: Carlson Blair E., Karagoulis Michael J., Sigler David R.
Принадлежит:

A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy (“aluminum”) workpiece together includes several steps. One step involves providing a workpiece stack-up with a steel workpiece and an aluminum workpiece. Another step involves attaching a cover over a weld face of a welding electrode. The cover is made of a metal material with an electrical resistivity that is greater than an electrical resistivity of a material of the welding electrode. Yet another step involves performing multiple individual resistance spot welds to the workpiece stack-up. The cover abuts the aluminum workpiece while the individual resistance spot welds are performed. And another step involves removing the cover from the welding electrode after the individual spot welds are performed. 1. A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece together , the method comprising:providing a workpiece stack-up that includes a steel workpiece and an aluminum or aluminum alloy workpiece;attaching a cover at least over a weld face of a welding electrode, the cover being made of a metal material with an electrical resistivity that is greater than an electrical resistivity of a material of the welding electrode;performing a plurality of individual resistance spot welds to the workpiece stack-up, the cover abutting the aluminum or aluminum alloy workpiece while the individual resistance spot welds are performed; andremoving the cover from the welding electrode after the individual resistance spot welds are performed.2. The method as set forth in claim 1 , wherein the cover is attached to the welding electrode via a crimping process claim 1 , a stamping process claim 1 , a screwing process claim 1 , or a combination of two or more of these processes.3. The method as set forth in claim 1 , wherein the cover is made of steel claim 1 , stainless steel claim 1 , molybdenum claim 1 , tungsten claim 1 , or niobium.4. The method as set ...

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Номер записи: 61
26-02-2015 дата публикации

MULTI-STEP DIRECT WELDING OF AN ALUMINUM-BASED WORKPIECE TO A STEEL WORKPIECE

Номер: US20150053655A1
Автор: Carlson Blair E., Karagoulis Michael J., Myasnikova Yelena, Sigler David R.
Принадлежит:

A workpiece stack-up that includes at least a steel workpiece and an aluminum-based workpiece can be resistance spot welded by employing a multi-stage spot welding method in which the passage of electrical current is controlled to perform multiple stages of weld joint development. The multiple stages include: (1) a molten weld pool growth stage in which a molten weld pool is initiated and grown within the aluminum-based workpiece; (2) a molten weld pool solidification stage in which the molten weld pool is allowed to cool and solidify into a weld nugget that forms all or part of a weld joint; (3) a weld nugget re-melting stage in which at least a portion of the weld nugget is re-melted; and (4) a re-melted weld nugget solidification stage in which the re-melted portion of the weld nugget is allowed to cool and solidify. 1. A method of resistance spot welding a workpiece stack-up , which includes an aluminum-based workpiece and a steel workpiece , so as to form a resistance spot weld joint between the aluminum-based workpiece and the steel workpiece , the method comprising:contacting a workpiece stack-up with a pair of spot welding electrodes such that the spot welding electrodes make contact with opposed sides of the workpiece stack-up, the workpiece stack-up comprising an aluminum-based workpiece and a steel workpiece, the aluminum-based workpiece having a faying surface and the steel workpiece having a faying surface, and wherein the faying surfaces of the aluminum-based workpiece and the steel workpiece overlap and contact one another to provide a faying interface between the workpieces; and growing a molten weld pool in the aluminum-based workpiece that extends from the faying interface into the aluminum-based workpiece;', 'allowing the molten weld pool to cool and solidify into a weld nugget that includes a weld bond area joined to the faying surface of the steel workpiece;', 're-melting at least a portion of the weld nugget including at least part of the weld ...

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Номер записи: 62
10-03-2022 дата публикации

DEVICE FOR CUTTING, SEPARATION, AND DISCHARGE OF SYRINGE

Номер: US20220072240A1
Автор: JEONG Jae-Hak, KIM Nam-Young, KIM You-Hwa, NOH Ju-Hwan, OH Kwang-Bin, Yun Ji-Won
Принадлежит:

A device for cutting, separation, and discharge of a syringe according to an embodiment of the present disclosure includes a barrel unit, a main body including a driving unit configured to rotate the barrel unit, and a cutting body configured to cut a needle portion of a syringe during rotation of the barrel unit, wherein transfer of the syringe inserted into the barrel unit, cutting of the needle portion, discharge of the needle portion, and discharge of a syringe main body are performed by only one rotation of the barrel unit. 1. A device for cutting , separation , and discharge of a syringe , the device comprising:a barrel unit into which a syringe is insertable and which has a needle portion through-hole provided to allow only a needle portion to be cut to pass through a lower end thereof;a main body including an upper shell which has a first groove, a lower shell which has a second groove corresponding to the first groove and is coupled to the upper shell, and a driving unit which is provided between the upper shell and the lower shell and is directly coupled to the barrel unit, which is installed through the first and second grooves, to rotate the barrel unit at a predetermined angle; anda cutting body which is detachable from a lower portion of the main body and includes a cutting blade to cut the needle portion during rotation of the barrel unit,wherein transfer of the inserted syringe, cutting of the needle portion, discharge of the cut needle portion, and discharge of a syringe main body from which the needle portion is removed are performed by only one rotation of the barrel unit.2. The device of claim 1 , wherein the barrel unit includes:a barrel housing which is vertically installed through the first and second grooves and has an open upper end portion, a lower end portion in which the needle portion through-hole is provided, and both sides connected to the main body, wherein one side is directly coupled to the driving unit to rotate at a predetermined ...

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Номер записи: 63
10-03-2022 дата публикации

BALANCED WELDING OF DISSIMILAR MATERIALS

Номер: US20220072647A1
Автор: Cloeter Nathan
Принадлежит: KTH Parts Industries, Inc.

A multi-tiered weld program that is effective in resistance spot welding of dissimilar materials is disclosed. The process is repeatable across a multitude of grades/thicknesses, and number of sheets of conductive materials, and is possible to perform with traditional weld tooling and electrodes. Different size/different material/different contact face geometries weld surfaces are used to balance thermal properties of the materials, and the process is designed to create a small, consistent Intermetallic Compound (IMC) that is effective in holding two different conductive materials together with a high level of strength that is suitable for industrial mass production. The multi-tiered resistance spot weld process uniformly preheats, welds, and cools the samples to control the formation of the IMC that is formed therein. 1. A resistance spot welding method for joining work pieces of dissimilar materials together , the method comprising the steps of:pressuring the work pieces to clamp the work pieces together with opposed weld electrodes of a weld machine;in a preheating phase, with the work pieces pressured and clamped together by the weld electrodes, providing electrical current through the weld electrodes to the work pieces at a predetermined level and for a predetermined period of time to provide gradual heating of the work pieces;in a welding phase after the preheating phase, with the work pieces pressured and clamped together by the weld electrodes, providing electrical current through the weld electrodes to the work pieces at a predetermined level higher than the preheating phase and for a predetermined period of time to form an Intermetallic Compound (IMC) between the work pieces; andwherein the electrical current is continuously provided to the work pieces from the preheating phase through welding phase without stops.2. The resistance spot welding method of claim 1 , further comprising a sloping phase between the preheating phase and the welding phase claim 1 ...

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Номер записи: 64
10-03-2022 дата публикации

BALANCED WELDING OF DISSIMILAR MATERIALS

Номер: US20220072648A1
Автор: Cloeter Nathan
Принадлежит: KTH Parts Industries, Inc.

A multi-tiered weld program that is effective in resistance spot welding of dissimilar materials is disclosed. The process is repeatable across a multitude of grades/thicknesses, and number of sheets of conductive materials, and is possible to perform with traditional weld tooling and electrodes. Different size/different material/different contact face geometries weld surfaces are used to balance thermal properties of the materials, and the process is designed to create a small, consistent Intermetallic Compound (IMC) that is effective in holding two different conductive materials together with a high level of strength that is suitable for industrial mass production. The multi-tiered resistance spot weld process preheats, welds, and cools the samples to control the formation of the IMC that is formed therein. 1. A resistance spot welding method for joining work pieces of dissimilar materials together , the method comprising the steps of:pressuring the work pieces to clamp the work pieces together with opposed weld electrodes of a weld machine;in a preheating phase, with the work pieces pressured and clamped together by the weld electrodes, providing electrical current through the weld electrodes to the work pieces at a predetermined level and for a predetermined period of time to provide gradual heating of the work pieces;in a welding phase after the preheating phase, with the work pieces pressured and clamped together by the weld electrodes, providing electrical current through the weld electrodes to the work pieces at a predetermined level higher than the preheating phase and for a predetermined period of time to form an Intermetallic Compound (IMC) between the work pieces; andwherein the electrical current is continuously provided to the work pieces from the preheating phase through welding phase without stops.2. The resistance spot welding method of claim 1 , further comprising a sloping phase between the preheating phase and the welding phase claim 1 , with the ...

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Номер записи: 65
01-03-2018 дата публикации

SPATTER ANALYSIS METHOD AND DEVICE

Номер: US20180056429A1
Автор: TANABE Junya, Yoshino Tetsuya
Принадлежит:

A spatter production information storage unit stores spots where spatter has been produced. For the spots where spatter has been produced, a comparison information generation unit acquires weld design information stored in a design information storage unit and weld instruction information stored in an instruction information storage unit, compares both pieces of information, and generates comparison information. An image information output unit outputs the generated comparison information to a display device. The display device displays the comparison information on a screen so as to allow checking by an operator. Hence, it is possible to check, on the screen, comparison information for weld instruction information and weld design information highly likely as a cause for spatter being produced, and to efficiently perform the task of analyzing the causes for spatter being produced. 1. A spatter analysis method for analyzing sputtering caused in spot welding of a workpiece with a welding gun , including:a design information storing step of storing welding design information defined by design information on the workpiece as welding information on the welding gun at a time of welding;a teaching information storing step of storing welding teaching information defined by teaching information on a welding robot as welding information on the welding gun at the time of welding;a spatter information storing step of storing a welding spot at which sputtering is caused during an operation by the welding robot based on the welding teaching information;a comparative information generating step of generating comparative information of the welding design information and the welding teaching information at the spot where the sputtering is caused; anda screen display step of displaying the comparative information on a screen.2. The spatter analysis method according to claim 1 , wherein the welding design information and the welding teaching information include attitude information at ...

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Номер записи: 66
01-03-2018 дата публикации

Joining apparatus for panel sheets and joining method for panel sheets using the same

Номер: US20180056431A1
Автор: Jae Hun Song
Принадлежит: Hyundai Motor Co

A joining apparatus for panel sheets and a joining method for panel sheets using the same are provided. The joining apparatus includes an element punching device which stores and supplies elements according to a specification of a panel sheet and inserts the element into a first panel sheet among different types of panel sheets. Additionally, a welding device resistively welds a part of the first panel sheet into which the element is inserted by the element punching device.

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Номер записи: 67
01-03-2018 дата публикации

Method for Welding Metal-Based Materials

Номер: US20180056432A1
Автор: Lindner Stefan, Skrlec Jasminko
Принадлежит: Outokumpu Oyi

The invention relates to a method of welding of at least two metal-based materials (), non-weldable directly to each other with resistance welding. At least one spacer () is joined by welding on at least one of the two surfaces of a material () in every interstice between two surfaces of materials to be welded. The welded spacer () is utilized so that resistance welding is focused to the surface of the material () with the spacer () to melt at least one spacer () located on the heat affecting zone in order to achieve a weld between the metal-based materials (). 1. A method for welding at least two metal-based materials , non-weldable directly to each other with resistance welding , comprising providing at least one spacer joined by welding on at least one of the two surfaces of a material in every interstice between two surfaces of materials to be welded , and utilizing the welded spacer so that resistance welding is focused to the surface of the material with the spacer to melt at least one spacer located on the heat affecting zone in order to achieve a weld between the metal-based materials.2. The method according to claim 1 , wherein the spacer is welded by arc welding.3. The method according to claim 1 , wherein the spacer is welded by plasma welding.4. The method according to claim 1 , wherein the spacer is welded by gas metal arc welding.5. The method according to claim 1 , wherein the spacer is welded by beam welding.6. The method according to claim 1 , wherein the spacer is welded by laser beam welding.7. The method according to claim 1 , wherein the spacer is welded by electron beam welding.8. The method according to claim 1 , wherein the resistance welding is carried out by spot welding.9. The method according to claim 1 , wherein the resistance welding is carried out by roller seam welding.10. The method according to claim 1 , wherein the resistance welding is carried out by projection welding.11. The method according to claim 1 , wherein the resistance ...

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Номер записи: 68
01-03-2018 дата публикации

METALLIC MEMBER BONDING DEVICE FOR PRESSING ROD-SHAPED OR CYLINDRICAL FIRST METALLIC MEMBER INTO HOLE PORTION OF ANNULAR SECOND METALLIC MEMBER TO BOND THE SAME AND BONDING METHOD THEREFOR

Номер: US20180056433A1
Автор: Hashimoto Akira, NAKAI Masanori
Принадлежит: MAZDA MOTOR CORPORATION

A metallic member bonding device includes a pressurizing unit, a current supply unit, and a deformation suppressing unit. The pressurizing unit pressurizes a first metallic member toward a hole portion of a second metallic member to press the first metallic member therein. The current supply unit supplies a welding current between the first metallic member and the second metallic member. The deformation suppressing unit suppresses deformation of one of the first metallic member and the second metallic member, the one member having a constituent metallic material with at least one of a proof stress and a melting temperature lower than that of the other member, the deformation being in a direction of a cross section crossing a direction of the press-in. Then, the deformation suppressing unit is provided in a region covering at least a plastic flow range in the press-in direction. 1. A metallic member bonding device for pressing a first metallic member having a rod shape or a cylindrical shape into a hole portion of a second metallic member having an annular shape to bond the first metallic member and the second metallic member , the first metallic member being made of a first metallic material , and the second metallic member being made of a second metallic material different from the first metallic material and having the hole portion with a cross section smaller in size than a cross section of the first metallic member ,the metallic member bonding device comprising:a pressurizing unit which pressurizes the first metallic member toward the hole portion of the second metallic member to press the first metallic member therein;a current supply unit which supplies a welding current between the first metallic member and the second metallic member; anda deformation suppressing unit which suppresses deformation of one of the first metallic member and the second metallic member, the one member having a constituent metallic material with at least one of a proof stress and a ...

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Номер записи: 69
01-03-2018 дата публикации

SPOT WELDING APPARATUS THAT JUDGES WELDING STATE

Номер: US20180056434A1
Автор: AMAGATA Yasuhiro, AOKI Toshimichi
Принадлежит: FANUC Corporation

A spot welding apparatus includes a spot welding gun and a welding gun control apparatus. The welding gun control apparatus includes a pressurizing force control part controlling the pressurizing force, a position control part controlling the position of at least one electrode, and a determination part determining whether or not the welding is performed in a normal state. The position control part controls an electrode drive motor so as to hold the electrodes, after the supply of the electric current is started, at positions when the initial pressurizing force is applied before the electric current is supplied. The determination part acquires the pressurizing force and determines whether or not the welding is performed in a normal state based on change tendency in the pressurizing force. 1. A spot welding apparatus comprising:a spot welding gun including a pair of electrodes disposed opposite to each other and an electrode drive motor driving at least one electrode of the pair of electrodes; anda welding gun control apparatus controlling the spot welding gun; whereinthe welding gun control apparatus includes a pressurizing force control part controlling pressurizing force, a pressurizing force detection part detecting a pressurizing force that the pair of electrodes apply to a workpiece, a position control part controlling a position of the electrode, a determination part that determines whether or not welding is performed in a normal state during a period in which electric current is supplied to the electrodes, and a storage part storing information that relates to the welding,the pressurizing force control part controls the electrode drive motor so that the pressurizing force applied to the electrodes is a predetermined initial pressurizing force before electric current is supplied;the position control part controls the electrode drive motor so as to hold the electrodes, after the supply of the electric current is started, at positions when the initial ...

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Номер записи: 70
28-02-2019 дата публикации

System and method for joining structures of dissimilar material

Номер: US20190061032A1
Автор: Paul J. Wolcott
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system and method for joining structures includes a method of joining a first panel to a second panel. A first workpiece formed of a first material is positioned adjacent a second workpiece formed of a second material and joined with a joining process. At least one welding insert is formed from the joined first and second workpieces having an upper portion formed of the first material and a lower portion formed of the second material. The at least one welding insert is positioned between a first panel formed of the first material and a second panel formed of the second material and placed between first and second electrodes of a welding device. First and second electrodes of the welding device generate an electric current to join the first panel, at least one welding insert, and the second panel.

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Номер записи: 71
28-02-2019 дата публикации

UAM RESISTANCE SPOT WELD JOINT TRANSITION FOR MULTIMATERIAL AUTOMOTIVE STRUCTURES

Номер: US20190061042A1
Автор: Dapino Marcelo J., Gingerich Mark Bryant, Hahnlen Ryan M., Headings Leon M.
Принадлежит:

A vehicle body assembly is described herein, including a first structural component and a second structural component. The first structural component may be a roof component or a side panel, and include a first part including a first metal and a second part including a second metal different than the first metal. The second part is formed on a peripheral edge portion of the first part and defines a mounting flange for the first structural component. The second part is joined to the first part via an ultrasonic additive manufacturing (UAM) interface. The second structural component is including the second metal and is joined to the second part at the mounting flange via a resistance spot weld (RSW) joint. 1. A multi-material component , comprising:a first component comprising a first material;a second component comprising a second material that is different than the first material; andan insert positioned between the first component and the second component, wherein the insert is joined to the first component via an ultrasonic additive manufacturing (UAM) interface and the second component is secured to the insert.2. The multi-material component of claim 1 , wherein the insert comprises a plurality of UAM layers.3. The multi-material component of claim 1 , wherein the second component is resistance spot welded (RSW) to the insert via a RSW joint.4. The multi-material component of claim 3 , wherein a thickness of the insert is based on the RSW joint being formed to exclude any portion of the UAM interface; or wherein the thickness of the insert is based on the RSW joint being formed to include a portion of the UAM interface in a Heat Affected Zone (HAZ).5. The multi-material component of claim 1 , wherein the UAM interface runs along a length of the first component and the insert in a forward and rearward direction or in a lateral direction of a vehicle body.6. The multi-material component of claim 1 , wherein the insert is secured to the first component at a ...

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Номер записи: 72
28-02-2019 дата публикации

ROBOT AND ROBOT SYSTEM

Номер: US20190061145A1
Автор: Ishimaru Yuji, ITO Tsuyoshi, KONNO Tsuyoshi, OHTSUBO Naoyuki
Принадлежит: KABUSHIKI KAISHA YASKAWA DENKI

A robot is provided which has: a first arm portion to which an end effector is attached, a second arm portion configured to support, at a tip portion thereof, the first arm portion swingably about a first axis, a third arm portion configured to support a base end portion of the second arm portion rotatably about a second axis orthogonal to the first axis, a tube arranged from the base end portion side toward the tip portion side of the second arm portion and connected to the end effector; and a first recess portion and a second recess portion, which are formed along an arrangement direction of the tube between the base end portion and the tip portion on one side and the other side in a direction orthogonal to both of the first and second axes, respectively. 1. A robot comprising:a first arm portion to which an end effector is attached;a second arm portion configured to support, at a tip portion thereof, the first arm portion swingably about a first axis;a third arm portion configured to support a base end portion of the second arm portion rotatably about a second axis orthogonal to the first axis;a tube arranged from the base end portion side toward the tip portion side of the second arm portion and connected to the end effector; anda first recess portion and a second recess portion, which are formed along an arrangement direction of the tube between the base end portion and the tip portion on one side and the other side in a direction orthogonal to both of the first and second axes, respectively.2. The robot according to claim 1 , whereinthe first arm portion includes a hollow portion into which the tube is inserted.3. The robot according to claim 1 , whereinthe first recess portion and the second recess portion have the tip portion formed in a forked shape, anda depth of a depression in the direction orthogonal to both of the first and second axes and a width in the first axis direction increase from the base end portion side toward the tip portion side in the ...

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Номер записи: 73
12-03-2015 дата публикации

WELD HEAD

Номер: US20150069026A1
Автор: Cielinski David, Green Matthew A., Rodighiero Mark
Принадлежит:

A weld head for spot welding two or more components together. The weld head includes first and second electrode assemblies and a linear actuator motor to drive the first electrode assembly into a desired position and apply a desired clamping force. The weld head may include a sensor configured to measure a temperature of the motor and a controller configured to monitor the temperature and adjust the current supplied to the motor to maintain the desired clamping force. The weld head may include linear encoder to measure the position of the linear actuator motor and an algorithm that correlates the position of the motor with a force constant of the motor. Based on the position of the motor and the corresponding force constant of the motor, the controller is configured to adjust the current supplied to the motor to maintain the desired clamping force. 1. A weld head configured to spot weld two or more components together , the weld head comprising:first and second electrode assemblies configured to supply a weld current through the components;a linear actuator motor configured to drive the first electrode assembly into a desired position and to apply a desired clamping force to the components;a temperature sensor coupled the linear actuator motor and configured to measure a temperature of the linear actuator motor; anda controller configured to monitor the temperature measured by the temperature sensor and, based upon the temperature, adjust the current supplied to the linear actuator motor to maintain the desired clamping force.2. The weld head of claim 1 , wherein the temperature sensor is a thermistor.3. The weld head of claim 1 , wherein the first electrode assembly comprises:an upper adapter; anda lower adapter detachably coupled to the upper adapter, wherein the lower adapter is configured to detachably receive an electrode.4. The weld head of claim 1 , further comprising a brake configured to move between an engaged position in which the position of the first ...

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Номер записи: 74
11-03-2021 дата публикации

SPOT WELDING METHOD

Номер: US20210069820A1
Автор: Hirayama Shinyu, Saito Hitoshi, Tan Xihao, Watanabe Shinya
Принадлежит:

Provided is a spot welding method by which welding can be performed successfully while inhibiting occurrence of expulsion. First to third metal plates W to W were welded in which a ratio of a total thickness to a thickness of the first metal plate W is 7. In Example 1, a peak current value A is 14.6 kA, an effective current value A is 7.8 kA, a peak duration T is 0.1 ms, and a no-peak duration T is 5.9 ms. As a result, a lower limit current value A is 6.9 kA, an upper limit current value A is 8.42 kA, a difference A between A and A is 1.52 kA, T/T is 59.0, A/A is 0.53, and rising time T/falling time T is 0.53, furthermore, no expulsion occurs, and a welding result was determined to be OK. 1. A spot welding method comprising:joining, using pulse current, a laminate which comprises three or more superimposed metal plates, which is formed so that at least one metal plate among the three or more metal plates is different in thickness from the other metal plates, and in which a plate thickness ratio of a total thickness of the three or more metal plates to a thickness of the at least one metal plate is from 3.5 to 10, whereinthe pulse current has a pulsed waveform in which a peak state and a no-peak state are alternately set, the peak state being a state where peak maintaining control is started at a point when the pulse current reaches from a value lower than a lower limit value of a set peak current range to an upper limit value of the peak current range, and is performed as much as a predetermined number of times until the pulse current decreases from the upper limit value of the peak current range to the lower limit value of the peak current range and again increases to the upper limit value of the peak current range, and the no-peak state being a state where after the peak maintaining control is performed as much as the predetermined number of times, the pulse current decreases from the upper limit value of the peak current range to bottom current which is set, and ...

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Номер записи: 75
11-03-2021 дата публикации

METHOD OF JOINING STEEL HAVING DIFFERENT RESISTIVITIES

Номер: US20210069821A1
Автор: Cipriano Steven, Karagoulis Michael J., MELLAS Spyros P., Wang Pei-Chung
Принадлежит:

A method of joining a multiple member work-piece includes providing a first steel work-piece having a first electrical resistivity and a second steel work-piece having a second electrical resistivity that is lower than the first electrical resistivity. A third material is disposed in contact with the second steel work-piece. The third material has an electrical resistivity that is greater than the second electrical resistivity. The method includes resistance welding the first and second work-pieces together. The third material may be in the form of a rivet, a third work-piece, or a coating material disposed between the first and second work-pieces. A bonded assembly includes steel members and a third material being bonded together, wherein the electrical resistivity of the second member is lower than the electrical resistivity of the first member, and the third material has an electrical resistivity that is greater than the electrical resistivity of the second member. 1. A method of joining a multiple member work-piece , comprising:providing a first steel work-piece having a first electrical resistivity;providing a second steel work-piece having a second electrical resistivity that is lower than the first electrical resistivity;disposing a third material in contact with the second steel work-piece, the third material having a third electrical resistivity that is greater than the second electrical resistivity; andresistance welding the first and second steel work-pieces and the third material together.2. The method of claim 1 , further comprising providing at least one of the third electrical resistivity and the first electrical resistivity as being at least double the second electrical resistivity.3. The method of claim 1 , further comprising providing the third electrical resistivity as being at least double the second electrical resistivity.4. The method of claim 3 , further comprising providing the first electrical resistivity as being at least three times the ...

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Номер записи: 76
27-02-2020 дата публикации

TRANSFERABLE ELECTRODE TIP FOR RESISTANCE WELDING AN ANODE TAB TO THE CASING OF AN ELECTROCHEMICAL CELL

Номер: US20200067064A1
Автор: Dai Xiangyang, Grubb Kenneth L.
Принадлежит:

A new weld configuration is used to obtain a robust and consistent resistance weld between the tabs of an anode current collector and the casing of an electrochemical cell. This is done by adding a resistive transferable electrode tip between at least one of the welding electrodes, preferably the movable welding electrode, and the stacked parts that are being joined together. The purpose of the transferable electrode tip is to generate a sufficient amount of heat during the welding process so that the stacked parts are joined together without adding any product functionality. In one embodiment of the present invention, the transferrable electrode tip is a stainless-steel ball, the stacked anode current collector tabs are of nickel, and the cell casing is of stainless-steel. 1. An electrochemical cell , comprising:a) a casing; i) at least a first cathode comprising a first cathode active material contacted to a first cathode current collector, the first cathode current collector having a first cathode tab extending outwardly therefrom;', 'ii) at least one anode comprising an anode active material contacted to an anode current collector, wherein the at least one anode is in electrochemical association with the first cathode, and wherein the anode has at least a first anode tab extending outwardly therefrom;', 'iii) at least one anode weld electrically and mechanically connecting the first anode tab to the casing serving as a negative terminal for the cell; and', 'iv) a separator residing between the anode and the first cathode; and, 'b) an electrode assembly housed inside the casing, the electrode assembly comprisingc) a feedthrough comprising a terminal pin of a glass-to-metal seal supported by the casing, wherein the terminal pin extends from a terminal pin proximal end electrically connected to the cathode tab to a terminal pin distal end located outside the casing to thereby serve as a positive terminal for the cell; andd) an electrolyte in the casing activating ...

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Номер записи: 77
15-03-2018 дата публикации

PROGRAMMABLE POLARITY MODULE FOR DC RESISTANCE SPOT WELDING

Номер: US20180071856A1
Автор: Karagoulis Michael J., Sigler David R.
Принадлежит:

A programmable polarity module that permits rapid on-demand control of the polarities assigned to the welding electrodes retained on a welding gun is disclosed. The programmable polarity module is electrically connectable to the welding gun and a direct current power supply unit to provide direct current to the welding electrodes for exchange during spot welding. A first interchangeable polarity output lug and a second interchangeable polarity output lug of the programmable polarity module permit the polarities of the welding electrodes to be switched without having to electrically disconnect the module from the welding gun. 1. A method of practicing resistance spot welding , the method comprising:providing a direct current power supply unit that is electrically connected to a welding gun and configured to deliver a direct welding current to the welding gun for passage between a first welding electrode and a second welding electrode carried by the welding gun, the direct current power supply unit comprising a programmable polarity module that includes a first interchangeable polarity output lug, which electrically communicates with the first welding electrode, and a second interchangeable polarity output lug, which electrically communicates with the second welding electrode;locating a metal workpiece stack-up between the first and second welding electrodes, the metal workpiece stack-up including a first metal workpiece and an overlapping second metal workpiece, wherein at least one of the first metal workpiece or the second metal workpiece is comprised of an aluminum alloy;contacting a surface of the first metal workpiece with the first welding electrode and contacting a surface of the second metal workpiece with the second welding electrode;controlling the first and second interchangeable polarity output lugs of the programmable polarity module to assign a polarity, either positive or negative, to the first welding electrode and to assign a polarity, either ...

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Номер записи: 78
24-03-2022 дата публикации

METHOD OF RESISTANCE SPOT WELDING AND RESISTANCE SPOT WELDING APPARATUS

Номер: US20220088699A1
Автор: Yasuda Keigo
Принадлежит:

A method of resistance spot welding that enables an improvement of a weld strength of steel plates having different plate thicknesses while inhibiting generation of spatters is provided. One aspect of the present disclosure is the method of resistance spot welding, the method including welding a workpiece made of layered steel plates with a resistance spot welding apparatus. The resistance spot welding apparatus includes a first electrode configured to contact a first steel plate among the steel plates, and a second electrode configured to contact, among the steel plates, a second steel plate that is thinner than the first steel plate, and the second electrode being arranged such that the workpiece is interposed between the first electrode and the second electrode. The welding includes welding while moving the second electrode relative to the first electrode in a direction parallel with a plate surface of the second steel plate. 1. A method of resistance spot welding , the method comprising welding a workpiece made of layered steel plates with a resistance spot welding apparatus ,the resistance spot welding apparatus comprising:a first electrode configured to contact a first steel plate among the steel plates; anda second electrode configured to contact, among the steel plates, a second steel plate that is thinner than the first steel plate, and the second electrode being arranged such that the workpiece is interposed between the first electrode and the second electrode,wherein the welding comprises welding while moving the second electrode relative to the first electrode in a direction parallel with a plate surface of the second steel plate.2. The method of resistance spot welding according to claim 1 ,wherein the second electrode is moveable relative to the first electrode in a direction the workpiece is interposed, andwherein, in the welding, the workpiece is retained such that a thickness direction of the workpiece intersects with the direction the workpiece is ...

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Номер записи: 79
07-03-2019 дата публикации

SEAM WELDING METHOD AND SEAM WELDING DEVICE

Номер: US20190070690A1
Автор: Igaue Mitsutaka, Ishikawa Yuya, Kawai Yasuhiro, KODAMA Tetsuya, Yamaashi Kazuhiko
Принадлежит:

A laminate formed by stacking a plurality of workpieces is sandwiched between a pair of roller electrodes. Then, seam welding is performed on the laminate by successively repeating an ON/OFF operation of a conduction state between the pair of roller electrodes while moving the laminate relative to the pair of roller electrodes. When the seam welding stops in a state where the pair of roller electrodes are unpowered and then the seam welding is to be resumed, the laminate is moved by a predetermined distance in a direction opposite to the relative moving direction during seam welding, spot welding is performed on the laminate, and then the seam welding is resumed. 1. A seam welding method for performing seam welding on a laminate , the laminate being formed by stacking a plurality of workpieces , by sandwiching the laminate between a pair of roller electrodes and supplying power between the pair of roller electrodes while moving the pair of roller electrodes relative to the laminate , whereinwhen the seam welding stops in a state where the pair of roller electrodes are unpowered and then the seam welding is to be resumed, the pair of roller electrodes are moved by a predetermined distance in a direction opposite to a relative moving direction during seam welding, spot welding is performed on the laminate, and the seam welding is resumed after the spot welding is performed.2. The seam welding method according to claim 1 , wherein a position at which spot welding is performed on the laminate is a position away from a terminal end portion of a nugget by seam welding formed in the laminate immediately before seam welding stops.3. The seam welding method according to claim 2 , wherein the position at which spot welding is performed on the laminate is located on a path where the laminate moves relative to the pair of roller electrodes.4. The seam welding method according to claim 1 , wherein the spot welding is performed so that a nugget by seam welding formed in the ...

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Номер записи: 80
07-03-2019 дата публикации

METHOD FOR CREATING A RESISTANCE WELD BOND BETWEEN TWO METALS

Номер: US20190070691A1
Автор: Dai Xiangyang, Miller Robert D.
Принадлежит:

An electrode used for resistance welding is described. In an embodiment, the electrode comprises a two-part construction having an electrode tip portion that is removably contactable to an electrode base. The electrode is constructed such that the respective base and electrode tip portions may be composed of metals having differing melting temperatures, in particular a significant difference in melting temperature of at least 100° C. or more. The electrode is preferably constructed so that the electrode tip portion can be easily removed, thereby leaving the base portion within the fixture. 1. A method of creating a resistance weld bond between two metals , comprising the steps of:a) providing a first workpiece metal;b) providing a second workpiece metal; i) an electrode base portion composed of a first electrically conductive material comprising an electrode base body having an electrode base proximal end with an electrode base proximal surface that extends along a longitudinal axis to an electrode base portion distal end with an electrode base distal surface;', 'ii) an electrode tip portion composed of a second electrically conductive material comprising an electrode tip body having an electrode tip proximal end with an electrode tip proximal surface that extends along the longitudinal axis to an electrode tip distal end with an electrode distal surface; and', 'iii) wherein the electrode tip portion is contactable to the electrode base portion so that electrical energy is conductible therebetween;, 'c) providing an electrical resistance weld instrument comprising a first resistance welding electrode and a second resistance welding electrode positioned opposed from the first resistance welding electrode and an electrical power source electrically connected to the first and second resistance welding electrodes, wherein either or both of the first and second resistance welding electrode comprisesd) placing the first and second workpiece metals between the opposing ...

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Номер записи: 81
16-03-2017 дата публикации

POWER PULSE METHOD FOR CONTROLLING RESISTANCE WELD NUGGET GROWTH AND PROPERTIES DURING STEEL SPOT WELDING

Номер: US20170072502A1
Автор: Karagoulis Michael J., Sigler David R.
Принадлежит:

A method of resistance spot welding steel workpieces—at least one of which includes a high-strength steel substrate having a tensile strength of 1000 MPa or greater—involves passing a pulsating DC electrical current between a pair of aligned welding electrodes that are pressed against opposite sides of a workpiece stack-up that includes the steel workpieces. The pulsating DC electrical current delivers sufficient power through the weld site by way of electrical current pulses to initiate and grow a molten steel weld pool at each faying interface within the workpiece stack-up that solidifies into a weld nugget of uniform hardness. In other words, each of the weld nuggets formed by the pulsating DC electrical current does not include soft, coarse, and alloy deficient shell regions that tend to reduce the strength of the weld nugget. 1. A method of resistance spot welding steel workpieces , the method comprising:providing a workpiece stack-up that includes a plurality of steel workpieces that overlap each other to establish a faying interface between each pair of adjacent steel workpieces within the workpiece stack-up at a weld site, the plurality of steel workpieces comprising at least a first steel workpiece and a second steel workpiece, the first steel workpiece having an exterior outer surface that provides a first side of the workpiece stack-up, and the second steel workpiece having an exterior outer surface that provides a second side of the workpiece stack-up, and wherein at least one of the plurality of steel workpieces within the workpiece stack-up comprises a high-strength steel substrate having a tensile strength of 1000 MPa or greater;contacting the exterior outer surface of the first steel workpiece with a first welding electrode and contacting the exterior outer surface of the second steel workpiece with a second welding electrode, the first and second welding electrodes being pressed against their respective exterior outer surfaces in facing alignment at ...

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Номер записи: 82
16-03-2017 дата публикации

HYBRID WELDER

Номер: US20170072513A1
Автор: CHOI Hyun Bum, LEE Min Seok
Принадлежит: Howon Co., Ltd.

A hybrid welder includes a main body, a robot arm provided to be rotatable with respect to the main body, a spot welding gun provided to an end portion of the robot arm so as to carry out spot welding at a joining area of the subject being welded, an arc-welding torch provided to the end portion of the robot arm so as to carry out arc-welding at the joining area of the spot-welded subject being welding, and a fixing part for firmly fixing the main body. Since the present invention can carry out, differently from a conventional technique, two kinds of welding at one position without moving parts when carrying out the spot welding and the carbon dioxide arc-welding for two or more members, labor costs can be reduced and productivity can be maximized, and each welding facility can be individually separated, thereby facilitating maintenance. 1. A hybrid welder comprising:a main body;a robot arm pivotably provided with respect to the main body;a spot-welding gun that is provided at an end of the robot arm and spot-welds a bonding area of target welding subjects;an arc-welding torch that is provided at an end of the robot arm and arc-welds a bonding area of the spot-welded target welding subjects; anda fixing portion that firmly fixes the main body.2. The hybrid welder of claim 1 , wherein the fixing portion includes:a base frame that is fixedly installed on a bottom and supports the main body to prevent shaking of the main body from directly transferring to the bottom;a flange configured to extend from a lower edge of the main body to increase an area in contact with the base frame; anda coupling member that separably couples the flange and the base frame.3. The hybrid welder of claim 1 , wherein the robot arm is coupled to the spot-welding gun and the arc-welding torch to be individually separable by a connection portion.4. The hybrid welder of claim 3 , wherein the connection portion includes:a rotary block rotatably provided at an end portion of the robot arm;a ...

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Номер записи: 83
18-03-2021 дата публикации

RESISTANCE WELDING METHOD AND RESISTANCE WELDING APPARATUS

Номер: US20210078096A1
Автор: ICHIHARA Koichiro, MORIWAKI Motonori, NAKAI Masanori, SATO Hiroki, TAKAHASHI Katsunori, UJIHIRA Naoki, YAMAGUCHI Kojiro
Принадлежит: MAZDA MOTOR CORPORATION

A resistance welding method includes: welding a plurality of welding target members by supplying an electric current through electrodes; and generating a fragile portion in a position of the welding target members different from a position subject to the welding by using the electrodes for the welding or electrodes separate from the electrodes for the welding, before, during, or after the welding is performed. 1. A resistance welding method , comprising:welding a plurality of welding target members by supplying an electric current through electrodes; andgenerating a fragile portion in a position of the welding target members different from a position subject to the welding by using the electrodes for the welding or electrodes separate from the electrodes for the welding, before, during, or after the welding is performed.2. The resistance welding method of claim 1 , wherein:the generating of the fragile portion generates a heat affected part as the fragile portion.3. The resistance welding method of claim 1 , wherein:the generating of the fragile portion generates a recessed portion as the fragile portion on a surface of the welding target members.4. The resistance welding method of claim 1 , wherein:the welding welds an iron-based member and an aluminum-based member as the plurality of welding target members.5. The resistance welding method of claim 1 , wherein:each of the electrodes for generating the fragile portion is arranged in at least a part of a circumferential direction on an outer circumferential side of corresponding one of the electrodes for the welding, and is distanced from the corresponding one of the electrodes for the welding.6. A resistance welding apparatus claim 1 , comprising:a welding system that welds a plurality of welding target members by supplying an electric current through electrodes; anda fragile portion generating system that generates a fragile portion in a position of the welding target members different from a position subject to ...

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Номер записи: 84
12-06-2014 дата публикации

FLEXPLATES AND METHOD FOR CAPACITOR DISCHARGE WELDING OF FLEXPLATES

Номер: US20140157929A1
Автор: Yin Guobin
Принадлежит:

A two-piece flexplate assembly having a ring gear welded to a central plate using a capacitor discharge welding process. The weld is established between a joining structure defined between the ring gear and the central plate using either an overlap arrangement, a projection arrangement, or a chamfer arrangement. 1. A flexplate assembly for use with a powertrain in a motor vehicle , the flexplate assembly comprising:a nitrided central plate having an outer peripheral portion; anda ring gear having a rim portion with gear teeth, said rim portion engaging said outer peripheral portion of said central plate to define a joining structure therebetween, said joining structure being welded using a capacitor discharge welding operation for establishing a weld seam for rigidly securing said central plate to said ring gear.2. The flexplate assembly of wherein said joining structure is an overlapping joining structure between said ring gear and said central plate claim 1 , wherein said rim portion of said ring gear has a planar face surface which overlaps and engages a flange section formed on said outer peripheral portion of said central plate so as to define a continuous overlapping engagement therebetween claim 1 , and wherein said weld seam formed by said capacitor discharge welding operation is continuous and completely encircles said overlapping joining structure.3. The flexplate assembly of wherein said joining structure is an overlapping joining structure between said ring gear and said central plate claim 1 , wherein said rim portion of said ring gear is stepped to define a continuous shoulder flange surface and an inner wall surface claim 1 , wherein said outer peripheral portion of said central plate includes a planar face surface and an edge surface configured such that said planar face surface engages said shoulder flange surface while said edge surface is located in close proximity to said inner wall surface so as to define a continuous overlapping engagement ...

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Номер записи: 85
26-03-2015 дата публикации

RESISTANCE SPOT WELDING STEEL AND ALUMINUM WORKPIECES WITH HOT WELDING ELECTRODE AT ALUMINUM WORKPIECE

Номер: US20150083693A1
Автор: Perry Thomas A., Schroth James G., Sigler David R.
Принадлежит:

A method of resistance spot welding a steel workpiece to an aluminum or aluminum alloy workpiece is disclosed. One step of the disclosed method involves providing a workpiece stack-up that includes a steel workpiece and an aluminum workpiece. Another step involves preheating the welding electrode that is meant to contact the aluminum or aluminum alloy workpiece. Yet another step of the disclosed method involves pressing the preheated welding electrode and another welding electrode against opposite sides of the workpiece stack-up, with the preheated welding electrode abutting the aluminum or aluminum alloy workpiece, and passing an electrical current between the two welding electrodes at a weld site to initiate and grow a molten weld pool within the aluminum or aluminum alloy workpiece. 1. A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece together , the method comprising:providing a workpiece stack-up that includes a steel workpiece and an aluminum or aluminum alloy workpiece;providing a first welding electrode for contacting the steel workpiece and a second welding electrode for contacting the aluminum or aluminum alloy workpiece;preheating the second welding electrode by passing electrical current between the first and second welding electrodes to generate heat in the second welding electrode while cooling of the second electrode is restricted or halted;pressing the first and second welding electrodes against opposite sides of the workpiece stack-up at a weld site after preheating, the first welding electrode abutting the steel workpiece and the second welding electrode abutting the aluminum or aluminum alloy workpiece; andpassing electrical current between the first and second welding electrodes and through the workpiece stack-up at the weld site to initiate and grow a weld pool within the aluminum or aluminum alloy workpiece.2. The method as set forth in claim 1 , wherein the second welding is constructed from a ...

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Номер записи: 86
14-03-2019 дата публикации

RESISTANCE WELDING METHOD AND RESISTANCE WELDING APPARATUS

Номер: US20190076954A1
Автор: Hirayama Shinyu, Morita Takahiro, Nagayoshi Shogo, Saito Hitoshi, Saito Yasuhisa, Sawamura Hironori, Tan Xihao, Watanabe Shinya, Watanabe Sumitomo
Принадлежит:

A resistance welding method according to the present invention includes a current control step of sequentially performing a first control for maintaining a welding current being a direct current at a current value I1 (first target value) or in the vicinity of the current value I1, a second control for raising the welding current from the current value I1 to a current value I2 (second target value, I2>I1) and for subsequently maintaining the welding current at the current value I2 or in the vicinity of the current value I2, and a third control for lowering the welding current from the current value I2 to a value smaller than the current value I1, and the resistance welding method further comprises an energization step of applying the welding current while repeating the current control step plural times until a predetermined energization period of time elapses. 1. A resistance welding method for performing a spot joining on a workpiece composed of a plurality of overlapped plate materials by clamping and pressing the workpiece with a pair of electrodes and then by applying a welding current between the pair of electrodes , the method comprising:a current control step of sequentially performing:a first control for maintaining the welding current being a direct current at a first target value or in a vicinity of the first targeted value;a second control for raising the welding current from the first target value to a second target value being larger than the first target value and for subsequently maintaining the welding current at the second target value or in a vicinity of the second target value; anda third control for lowering the welding current from the second target value to a value being smaller than the first target value; andan energization step of applying the welding current while repeating the current control step plural times until a predetermined energization period of time elapses.2. The resistance welding method according to claim 1 , wherein:the first ...

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Номер записи: 87
14-03-2019 дата публикации

WELDING ELECTRODE DESIGN

Номер: US20190076955A1
Автор: Carlson Blair E., Haselhuhn Amberlee S., Karagoulis Michael J., Sigler David R., WANG Hui-Ping
Принадлежит:

A welding electrode includes a weld face that has a convex base weld face surface and a plurality of ringed ridges that are radially spaced apart on the base weld face surface and surround a central weld face axis. The plurality of ringed ridges including an innermost ringed ridge and an outermost ringed ridge. The innermost ringed ridge is located closest to the central weld face axis and rises above a central portion of the base weld face surface, and the outermost ringed ridge is located farthest from the central weld face axis and rises above an outer peripheral portion of the base weld face surface. At least one of the plurality of ringed ridges is a discontinuous ringed ridge. 1. A welding electrode comprising:a body; anda weld face disposed at one end of the body, the weld face including a convex base weld face surface that rises upwardly along a central weld face axis and a plurality of ringed ridges that are radially spaced apart on the base weld face surface and surround the central weld face axis, the plurality of ringed ridges including an innermost ringed ridge and an outermost ringed ridge, the innermost ringed ridge being located closest to the central weld face axis and rising above a central portion of the base weld face surface, and the outermost ringed ridge being located farthest from the central weld face axis and rising above an outer peripheral portion of the base weld face surface;wherein at least two of the plurality of ringed ridges that are located radially adjacent to one another are discontinuous ringed ridges, each of the discontinuous ringed ridges comprising a plurality of circumferentially spaced apart arcuate ridge portions that extend along a circular base line of the ridge and rise upwardly from the base weld face surface, wherein the circumferentially spaced apart arcuate ridge portions of each of the discontinuous ringed ridges define two or more ridge gaps along the circular base line of each discontinuous ringed ridge, and ...

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Номер записи: 88
22-03-2018 дата публикации

METHODS AND SYSTEMS FOR BRUSHLESS WELDER GENERATOR

Номер: US20180079023A1
Автор: Enyedy Edward A., Hruska Adam, Meckler Andreu P.
Принадлежит:

The invention described herein generally pertains to a system and method related to an engine driven welding device that includes a first brushless generator component configured to produce a first electrical current for use with a welding operation and a second brushless generator component configured to produce a second electrical current for use as auxiliary power. The first brushless generator component can be a permanent magnet generator and the second brushless generator component can be an asynchronous generator, each being coupled to a shaft of an engine within the engine driven welding device. A portion of the first electrical current produced can be fed into the second brushless generator component to act as an exciter, wherein the frequency of the portion of the first electrical current can be matched to the frequency of the second brushless generator component. 1. A welding device , comprising:a motor-driven welder assembly including an engine that is configured to rotate a shaft;a first generator component having a first rotor coupled to the shaft and a first stator that houses the first rotor, wherein a rotation from the shaft rotates the first rotor to generate a first electrical current;a second generator component having a second rotor coupled to the shaft and a second stator that houses the second rotor, wherein the rotation from the shaft rotates the second rotor to generate a second electrical current;the first generator component and the second generator component are brushless;the second electrical current is used as an auxiliary power source; anda first portion of the first electrical current is used as a power source for the welding device to perform a welding operation.2. The welding device of claim 1 , wherein the first generator component is a permanent magnet generator.3. The welding device of claim wherein the second generator component is an asynchronous generator.4. The welding device of claim 1 , further comprising a fan that rotates ...

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Номер записи: 89
22-03-2018 дата публикации

DISSIMILAR MATERIAL JOINED BODY AND DISSIMILAR MATERIAL JOINING METHOD

Номер: US20180079025A1
Автор: MIYAMOTO Kazuki
Принадлежит:

A dissimilar material joined body is obtained by subjecting to electrical energizing under pressure and joining with electrodes a laminated member, which is of a structure in which a first plate-shaped part and a second plate-shaped part having a higher melting point than that of the first plate-shaped part are superimposed on each other. A concave portion having a shape corresponding to the outer shape of an electrode is formed on the surface of the first plate-shaped part on a side thereof opposite to the second plate-shaped part. The first plate-shaped part includes protrusions, which are inserted into through holes formed in the second plate-shaped part. A method of joining dissimilar materials includes a hole forming step, a stacking step, a pressure energizing step, and a solidification step. 1. A dissimilar material joined body , which is obtained by subjecting to electrical energizing under pressure with electrodes and thereby joining a laminated member including a structure in which a first plate-shaped part and a second plate-shaped part having a higher melting point than that of the first plate-shaped part are superimposed on each other , wherein:a concave portion having a shape corresponding to an outer shape of the electrode is formed on a surface of the first plate-shaped part on a side thereof opposite to the second plate-shaped part;a through hole is formed in the second plate-shaped part; andthe first plate-shaped part includes a protrusion, which is inserted into the through hole.2. The dissimilar material joined body according to claim 1 , wherein:a plurality of the through holes are disposed at positions overlapping with the concave portion as viewed in plan from a stacking direction of the laminated member; anda plurality of the protrusions are provided which are inserted into the respective through holes.3. The dissimilar material joined body according to claim 2 , wherein the plurality of through holes are arranged in a manner so that center ...

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Номер записи: 90
24-03-2016 дата публикации

SPOT-WELDED JOINT AND SPOT WELDING METHOD

Номер: US20160082543A1
Автор: Furusako Seiji, Hamatani Hideki, KAWATA Hiroyuki, Miyazaki Yasunobu, OKADA Tohru, Wakabayashi Chisato, WATANABE Fuminori
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates (A, B) and performing spot welding on the steel plates, including a high-strength steel plate whose tensile strength is 750 (MPa) to 2500 (MPa), being at least one piece of steel plate out of the plurality of pieces of steel plates, in which a carbon equivalent Ceq of the high-strength steel plate is 0.20 mass % to 0.55 mass %, and ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (μm) or more exist in a square region within a heat-affected zone of a cross section that passes through a center of a welding mark, and is cut along a plate thickness direction of the steel plates (A, B), a cross tensile strength of the spot-welded joint to be formed is improved. 1. A spot-welded joint formed by overlapping a plurality of pieces of steel plates and performing spot welding on the steel plates , the plurality of pieces of steel plates,', 'a heat-affected zone, and', 'a nugget,, 'the spot-welded joint, comprising;'} 'in the plurality of pieces of steel plates, at least one piece of steel plate is a high-strength steel plate whose tensile strength is 750 MPa to 2500 MPa,', 'wherein;'} 'a carbon equivalent Ceq of the high-strength steel plate represented by the following expression (A) is 0.20 mass % to 0.55 mass %,', 'wherein;'} 'in the heat-affected zone, ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (μm) or more exist in a square region whose length of one side is 10 (μm) in which a plate thickness direction and a plate surface direction of the steel plates are set to a vertical direction and a horizontal direction, respectively,', 'wherein;'} 'the square region is in a cross section that passes through a center of a welding mark formed on surfaces of the steel plates by the spot welding, and is cut along the plate thickness direction of the steel plates,', 'wherein;'} 'a ...

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Номер записи: 91
23-03-2017 дата публикации

RESISTANCE WELDING DEVICE AND RESISTANCE WELDING METHOD, AND SHAPE OF PROJECTION FOR PROJECTION WELDING

Номер: US20170080513A1
Автор: KANEKO Noboru, Miyoshi Osamu, Sunaga Takashi, Suzuki Ryoichi
Принадлежит: NSK LTD.

A resistance welding device is provided with a moving distance measuring section for measuring distances between conductors to be joined before and after joining and evaluating joining quality based on the distances, and a projection including a base and a projecting surface is provided to the conductor to be connected in order to easily secure a distance between the conductors after the joining. 120.-. (canceled)21. A resistance welding device that performs joining of two conductors by resistance welding , comprising:at least a measuring section that measures a distance between said two conductors and determines quality of said joining,wherein said two conductors are two metal plates for electrical connection,wherein a projection is provided on one end on a plate surface of either one of said two metal plates, facing an other metal plate,wherein said projection comprises a base and a projecting surface formed on a top part of said base,wherein said base is vertically provided in a direction perpendicular to said metal plate,wherein an outer peripheral surface of said base is coated with an insulator,wherein a recessed surface corresponding to said projection is formed on a back surface of said plate surface at a part, on which said projection is provided, of one metal plate provided with said projection,wherein, in said recessed surface, a portion where is from a back surface of a plate surface of said metal plate to an inner peripheral surface of said base and said inner peripheral surface of said base, form continuous surface perpendicular to said plate surface of said metal plate,wherein a projecting surface portion in a hemisphere shape formed on said top surface of said base is entirely melted in welding,wherein said measuring section measures a first distance before said joining and a second distance after said joining, and determines said quality of said joining based on a difference between said first and second distances.22. The resistance welding device ...

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Номер записи: 92
23-03-2017 дата публикации

SPOT WELDING METHOD

Номер: US20170080515A1
Автор: Furusako Seiji, Miyazaki Yasunobu, NISHIBATA Hitomi, Takahashi Yasuo
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

The spot welding method of the present invention has steps of preliminary conduction, first conduction, second conduction, and third conduction: 1. A spot welding method joining a plurality of superposed steel sheets , the spot welding method comprisinga preliminary conduction step of gradually applying current,{'b': '1', 'a first conduction step of running a constant current at a current value I,'}{'b': '2', 'a second conduction step of next running current at a current value I, and further'}{'b': '3', 'a third conduction step of running current at a current I, wherein'}{'b': 1', '2', '2', '3, 'I>I and I Подробнее

Номер записи: 93
31-03-2022 дата публикации

SPOT WELDING METHOD

Номер: US20220097164A1
Автор: Saito Hitoshi, Tan Xihao, Watanabe Shinya
Принадлежит:

Provided is a spot welding method by which welding can be successfully performed while inhibiting occurrence of expulsion. First to third metal plates W to W were welded in which ratio of total thickness to thickness of the first metal plate W is 7. In Example 1, peak current value A is 14.6 kA, effective current value A is 7.8 kA, peak duration T is 0 ms, and no-peak duration T is 5.9 ms. As a result, in Example 1, lower limit current value A is 6.9 kA, upper limit current value A is 8.42 kA, difference A between upper limit current value A and lower limit current value A is 1.52 kA, peak duration T/no-peak duration T is 0, effective current value A/peak current value A is 0.53, and rising time T/falling time T is 0.79, furthermore, no expulsion occurs, and welding result was determined to be OK. 1. A spot welding method comprising: joining , using pulse current , a laminate which comprises three or more superimposed metal plates , which is formed so that at least one metal plate of the three or more metal plates is different in thickness from the other metal plates , and in which a plate thickness ratio of a total thickness of the three or more metal plates to a thickness of the at least one metal plate is from 3.5 to 10 , wherein the pulse current has a pulsed waveform in which a no-peak state is repeatedly set , wherein the no-peak state is a state where after the pulse current has reached a set peak current value from a value lower than the peak current value , the pulse current decreases from the peak current value to bottom current which is set , and again increases to the peak current value ,the peak current value is set to 10.6 kA or more,a no-peak duration which is a duration of the no-peak state is set to be from 4 ms to 13.6 ms, anda peak duration which is a duration of a state of being the peak current value is set to 0.9 ms or less, and ⅕ of the no-peak duration or less.2. A spot welding method comprising: joining , using pulse current , a laminate ...

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Номер записи: 94
31-03-2022 дата публикации

CONDUCTIVE SHEET AS CURRENT CONDUCTOR TO SPOT WELD STEEL

Номер: US20220097165A1
Автор: Ballard Adam R., Haselhuhn Amberlee S., Nelson Mark A., Parlow Peter M., Sigler David R.
Принадлежит:

A method to join three panels together for a motor vehicle includes one or more of the following: layering the three panels, the three panels including a first panel, a second panel, and a third panel, the second panel being positioned between the first panel and the third panel, the third panel having a higher electrical conductivity than the first panel and the second panel; joining the first panel and the second panel together; and joining the third panel to the first panel and the second panel. 1. A method to join three panels together for a motor vehicle , the method comprising:layering the three panels, the three panels including a first panel, a second panel, and a third panel, the second panel being positioned between the first panel and the third panel, the third panel having a higher electrical conductivity than the first panel and the second panel;joining the first panel and the second panel together; andjoining the third panel to the first panel and the second panel.2. The method of claim 1 , wherein joining the first panel and the second panel together occurs before joining the third panel to the first panel and the second panel.3. The method of claim 1 , wherein joining the third panel to the first panel and the second panel occurs before joining the first panel and the second panel together.4. The method of claim 1 , wherein joining the third panel to the first panel and the second panel occurs at the same time as joining the first panel and the second panel together.5. The method of claim 1 , wherein the first panel is made of steel and the second panel is made of steel.6. The method of claim 5 , wherein joining the first panel and the second panel together includes spot welding.7. The method of claim 1 , wherein the third panel is made of aluminum.8. The method of claim 1 , wherein the third panel is made of magnesium.9. The method of claim 1 , wherein joining the third panel to the first panel and the second panel includes riveting the third panel ...

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Номер записи: 95
25-03-2021 дата публикации

METHOD OF JOINING STEEL WORK-PIECES HAVING DIFFERENT GAUGE RATIOS

Номер: US20210086287A1
Автор: Cipriano Steven, Karagoulis Michael J., MELLAS Spyros P., Wang Pei-Chung
Принадлежит:

A method of joining a multiple member work-piece includes providing a first steel work-piece having a first thickness and a second steel work-piece having a second thickness. The first thickness is at least twice the second thickness. A third material is disposed in contact with the second steel work-piece. For example, the third material may be in the form of a rivet, a plurality of pins, or a coating material. The method includes resistance welding the first and second work-pieces together. A bonded assembly includes the first and second steel members and the third material being bonded together, where the thickness of the first member is at least twice the thickness of the second member. 1. A method of joining a multiple member work-piece , the method comprising:providing a steel first work-piece having a first thickness;providing a steel second work-piece having a second thickness, the first thickness being at least twice the second thickness;disposing a third material in contact with the second work-piece; andresistance welding the first and second work-pieces and the third material together.2. The method of claim 1 , further comprising providing the first thickness as being at least three times the second thickness.3. The method of claim 1 , the first and second work-pieces being formed of the same material.4. The method of claim 1 , further comprising:providing the third material as being a rivet; andpiercing the rivet into the second work-piece.5. The method of claim 4 , further comprising creating a bulge extending from the second work-piece at a faying interface between the first and second work-pieces.6. The method of claim 5 , further comprising providing the rivet having a head and disposing the head on an outer side of the second work-piece claim 5 , wherein the step of resistance welding includes pressing a first electrode against the head of the rivet and a second electrode against an outer side of the first work-piece and passing a current between ...

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Номер записи: 96
25-03-2021 дата публикации

INTEGRATED ELECTRODE MAINTENANCE FOR ROBOTIC WELDING CELL INCLUDING WELD CAP DISPENSER

Номер: US20210086288A1
Автор: Brown Philip W., Simone David M., Vanderzwet Daniel P.
Принадлежит:

A cap dispenser for a welding gun includes a sleeve that slidably receives a drawer that is configured to house a column of weld caps. The cap dispenser also includes a spring that cooperates with a slide block that is arranged in the drawer. The spring urges the slide block toward an aperture in the drawer that is configured to receive a welding gun electrode. 1. A cap dispenser for a welding gun comprising:a sleeve slidably receiving a drawer configured to house a column of weld caps; anda spring cooperating with a slide block arranged in the drawer, the spring urging the slide block toward an aperture in the drawer that is configured to receive a welding gun electrode.2. The cap dispenser of claim 1 , wherein the spring is a clock spring wound about a drum claim 1 , the drum mounted to a roller pin secured to a spring housing arranged on the sleeve claim 1 , one end of the clock spring is connected to the slide block.3. The cap dispenser of claim 2 , wherein the drawer includes a ramp that selectively cooperates with a movable pin mounted to the sleeve claim 2 , the pin is configured to maintain the drawer within the sleeve and resist the clock spring.4. The cap dispenser of claim 1 , wherein the spring urges the drawer to an extended position relative to the sleeve.5. The cap dispenser of claim 1 , comprising a sensor mounted relative to the drawer and configured to detect a weld cap orientation relative to the aperture.6. A method of dispensing caps for a welding gun comprising the steps of:biasing a weld cap to an aperture in an exchangeable dispenser;inserting a weld gun electrode through the aperture to engage the weld cap; andclosing the welding gun onto the weld cap to seat the weld cap onto the weld gun electrode.7. The method of claim 6 , wherein the biasing step includes urging the weld cap toward the aperture with a slide block connected to a spring.8. The method of claim 7 , comprising the step of providing a column of weld caps within a drawer ...

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Номер записи: 97
25-03-2021 дата публикации

INTEGRATED ELECTRODE MAINTENANCE FOR ROBOTIC WELDING CELL INCLUDING CAP EXTRACTOR

Номер: US20210086289A1
Автор: Brown Philip W., Simone David M., Vanderzwet Daniel P.
Принадлежит:

A cap extractor for a welding gun includes a housing, a pair of springs, and first and second arms that are arranged between the springs. Each of the first and second arms have teeth that are configured to engage a welding cap. The first and second arms are configured to move relative to the housing in first and second directions that are transverse to one another by deflecting the springs. 1. A cap extractor for a welding gun comprising:a housing;a pair of springs; andfirst and second arms arranged between the springs, each of the first and second arms having teeth configured to engage a welding cap, the first and second arms configured to move relative to the housing in first and second directions transverse to one another by deflecting the springs.2. The cap extractor of claim 1 , wherein the first and second arms are mounted to spaced apart disks claim 1 , the first and second arms pivotally connected to one another by a spacer pin that rotationally affixes the disks to one another.3. The cap extractor of claim 2 , wherein the springs are wave springs claim 2 , each wave spring received in a recess of one of the disks claim 2 , and a collar is arranged between each disk and the housing to locate a respective wave spring relative to the housing.4. The cap extractor of claim 1 , wherein an actuator is pivotally attached to the housing claim 1 , the actuator operatively connected to the first arm to rotate the first and second arms along with the disks claim 1 , the actuator configured to articulate relative to the housing during rotation of the first arm in the housing.5. The cap extractor of claim 1 , wherein a biasing spring is interconnected to the first and second arms to urge the first and second arms toward one another.6. A method of removing a cap from a welding gun comprising the steps of:receiving a welding cap having a centerline between teeth of first and second arms;floating the arms along the centerline and laterally relative to the centerline during ...

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Номер записи: 98
02-04-2015 дата публикации

SPOT WELDING APPARATUS

Номер: US20150090699A1
Автор: LEE So Young, RYU Sung Phil
Принадлежит: HYUNDAI MOTOR COMPANY

A spot welding apparatus includes: a fixed frame installed in an arm of a robot; an upper welding gun installed in one side of the fixed frame and reciprocating up and down through a pressurization unit; a rotary unit rotatably installed in a lower side of the fixed frame; and a plurality of lower welding guns installed through the rotary unit to correspond to the upper welding gun. 1. A spot welding apparatus comprising:a fixed frame installed on an arm of a robot;an upper welding gun installed in one side of the fixed frame and reciprocating up and down by a pressurization unit;a rotary unit rotatably installed in a lower side of the fixed frame; anda plurality of lower welding guns installed through the rotary unit to correspond to the upper welding gun.2. The spot welding apparatus of claim 1 , wherein the pressurization unit comprises:a gear box installed in front of the fixed frame;a pressurization actuator installed in one side of a lower portion of the gear box; anda moving block installed in the other side of the lower portion of the gear box that reciprocates on a screw shaft rotated upon receiving an operation of the pressurization actuator through the gear box.3. The spot welding apparatus of claim 2 , wherein the gear box is installed horizontally in front of the fixed frame.4. The spot welding apparatus of claim 2 , wherein the pressurization actuator is installed perpendicular with respect to the gear box claim 2 , and a driving motor is vertically installed in an adjacent position.5. The spot welding apparatus of claim 4 , wherein the driving motor is configured as a step motor whose revolutions per minute (RPM) and rotational direction are controlled.6. The spot welding apparatus of claim 4 , wherein the driving motor is configured as a servo motor whose speed is automatically self-controlled.7. The spot welding apparatus of claim 1 , wherein the rotary unit comprises:a decelerator installed in a lower side of the fixed frame;a rotary motor ...

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Номер записи: 99
19-06-2014 дата публикации

METHOD AND APPARATUS FOR ELECTRICALLY DESTROYING A SYRINGE NEEDLE OF A PEN-TYPE HYPODERMIC SYRINGE

Номер: US20140166624A1
Автор: Butler William F.
Принадлежит: Q Care International LLC

A method and apparatus for sterilizing and destroying a syringe needle includes a rotating needle carriage that receives a needle in a loading position. The needle carriage includes a port sized to accept a pen-type hypodermic syringe and an insert to downsize the port for accepting a conventional hypodermic syringe. The needle carriage is rotated downwardly to a cut-off position. At the cut-off position, two opposing contact blades pinch the needle, which electrically connects the positive and negative terminals of a battery. Current flows through the contact blades to shear the needle. The sheared portion of the needle then falls into a waste compartment in the bottom of the apparatus. When the syringe is removed from the needle carriage, the needle carriage rotates upwardly and returns to the loading position. 1. An apparatus for removing the needle portion of a pen-type hypodermic syringe comprising:a housing;a needle carriage for receiving a needle in a loading position, said needle carriage being rotatably connected to the housing from the loading position to a cut-off position, the needle carriage including a wide diameter port for accepting a pen-type hypodermic syringe;a first contact blade connected to the needle carriage; anda second contact blade secured within the housing;wherein said needle carriage and said contact blades are oriented such that when said needle carriage is rotated from the loading position to the cut-off position, the first and second contact blade each contact the needle.2. The apparatus of wherein the first and second contact blades sever a portion of the needle when the needle carriage is rotated to the cut-off position.3. The apparatus of further comprising a waste compartment located within the housing for receiving the severed portion of the needle claim 2 , the upper portion of the waste compartment having an opening located generally beneath the needle carriage.4. The apparatus of further comprising a door connected to the ...

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Номер записи: 100