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Welding

Subclass of:

219 - Electric heating

219050000 - METAL HEATING (E.G., RESISTANCE HEATING)

219121110 - By arc

219121600 - Using laser

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Class / Patent application numberDescriptionNumber of patent applications / Date published
219121640 Methods 169
Entries
DocumentTitleDate
20080245776Laser beam welding method and apparatus - While steel sheets are positioned and held by a holding mechanism, a first laser beam is applied to a heating region of the steel sheet to space the steel sheet from the other steel sheet by a predetermined distance. A second laser beam is applied to a welding region to weld the steel sheets. An amount of heat applied by the first laser beam, a moving speed of the first laser beam, and a focused spot diameter of the first laser beam are set to keep the sheet irradiated with the first laser beam in an unmelted state and plastically deform the sheet.10-09-2008
20090001059Method and apparatus for the repair of gas-turbine blisks - A method and an apparatus for repairing gas-turbine blisks uses an endoscope 01-01-2009
20090159579Butt Welding System of Steel Plate and Butt Welding Method of Steel Plate - A butt welding system and a butt welding method of steel plate by which the quality of a product can be ensured. Butting portions of blank members (06-25-2009
20090095719WELDING METHOD AND WELDING APPARATUS FOR AN IMPELLER - A welding method for an impeller having a plurality of blades, a disc and an exterior body including a shroud welded to the plurality of blades, comprising the steps of: 04-16-2009
20130026142WELDING EQUIPMENT - A welding equipment that forms an end part includes a vacuum chamber; a holding member that is installed in the vacuum chamber and that holds the end part in which a welding groove is formed by placing a half cell, an end plate, and a beam pipe next to each other; a window that is installed in a top-end surface portion of the vacuum chamber, which intersects with an axial center of the end part, and that forms a portion thereof; a laser radiating head that is installed outside the vacuum chamber and that radiates a laser beam into an internal space of the end part through the window; and a mirror member that is installed in the internal space of the end part and that adjusts a reflected laser beam, formed by reflecting the laser beam, so as to be oriented perpendicular to the welding groove.01-31-2013
20090212028Laser-arc hybrid welding head - A laser-arc hybrid welding head for performing laser light irradiation and arc discharge of a base material to weld the base material by combined use of laser welding and arc welding, comprising: an optical fiber for transmitting laser light used in laser welding; and an arc electrode for generating an arc between the arc electrode and the base material, wherein the optical fiber is disposed such that an optical axis thereof crosses an axis of the arc electrode at a predetermined angle.08-27-2009
20130048615ROTATING LASER WELDING PRESSURE UNIT - A laser welding pressure unit comprises a housing, a rotating element, and a foot. The housing may attach to a laser head. The rotating element may include an outer ring rotatably coupled to an inner ring, wherein the outer ring is coupled to the housing. The foot may couple to the inner ring such that the foot rotates with respect to the housing. The foot may also be configured to contact an upper surface of a metal sheet and may be oriented such that while the metal sheet is being welded, the foot rotates about a central vertical axis and the laser welding pressure unit is able to move in any direction without the foot breaking contact with the surface.02-28-2013
20130056448WIRE BONDING SYSTEM FOR SEMICONDUCTOR PACKAGE - A wire bonding system of a semiconductor package comprising a wire feeding device for positioning a wire at a ball formation position, a laser beam generation unit for generating a carbon dioxide laser beam, and a laser beam guiding unit for directing the laser beam at the ball formation position to form a ball at the wire. Accordingly, moldability and producibility of the ball formed on the wire may be improved. Also, electrical properties at a section of the wire are modified so as to minimize a loop height of the wire.03-07-2013
20090057278Machining head with integrated powder supply for deposition welding using laser radiation - The invention relates to a machining head with integrated powder supply for deposition welding using laser radiation. A machining head in accordance with the invention can in particular be used for deposition welding at a high deposition rate. In the machining head in accordance with the invention, the laser radiation is directed to supplied powder and to a material surface with a focal spot. The powder supply takes place symmetrically to the axial feed direction with a plurality of channels arranged oppositely. The channels are aligned at an obliquely inclined angle so that powder discharged from them is supplied into the focal spot of the laser radiation from two mutually oppositely disposed sides over the total width of the focal spot with respect to the axial feed direction.03-05-2009
20130062324Method of Verifying Seam Quality during a Laser Welding Process - This disclosure relates to verifying a seam quality during a laser welding process. In certain aspects, a method includes detecting, in a spatially resolved manner, a first amount of radiation emerging from a workpiece in a first wavelength range, determining a first geometric parameter of a seam characteristic based on the first amount of radiation detected in the first wavelength range, detecting, in a spatially resolved manner, a second amount of radiation emerging from the workpiece in a second wavelength range, the second wavelength range being different than the first wavelength range, determining a second geometric parameter of the seam characteristic based on the second amount of radiation detected in the second wavelength range, comparing the first and second geometric parameters to respective reference values or to respective tolerance intervals to provide respective comparison results, and logically combining the respective comparison results to verify the seam quality.03-14-2013
20130062325COMPUTER HOUSING - A visually seamless method of joining a first piece of metal and a second piece of metal is described. The first piece of metal is placed in contact with an edge of the second piece of metal. In some embodiments, the edge includes a sacrificial lip. The first piece of metal forming a junction area with the edge of the second piece of metal, applying a forging force to the first piece of metal, the forging force having an effect of creating an extremely tight fit up between the first and the second pieces of metal, welding the first and the second pieces to form an assembly and forming a cosmetically enhancing protective layer on the surface of the assembly, the protective layer obscuring any visible artifacts on the surface of the assembly, the obscured visible artifacts including any discoloration or discontinuity created by the laser welding.03-14-2013
20130161299LASER OPTICS WITH PASSIVE SEAM TRACKING - The present invention relates to a device for guiding a laser beam along a target path, particularly a joint. It has a laser beam input module that guides an incident laser beam onto a swiveling beam guiding device downstream from the laser beam input module. The beam guiding device projects the laser beam onto the target path. Said beam guiding device comprises a tactile sensor connected to the swiveling optic that is designed to perform a tactile scan of the target path and to deflect the swiveling optic appropriately. According to the invention, an intermediate focal point is located in the beam path of the laser beam between laser beam input module and swiveling optic. Moreover, the swivel axis of the swiveling optic runs through the intermediate focal point.06-27-2013
20120234805WELDING HEAD AND METHOD FOR JOINING A WORKPIECE - A method for joining a workpiece by means of a welding head, in which at least one line of light is generated on a workpiece, which crosses a joint line at a site to be joined and a joint seam generated at a joined site after processing. The lines of light are imaged at the site to be joined and at the joined site in order to generate reference data relating to the geometry of the site to be joined and measurement data relating to the geometry of the joined sites. The reference data and the measurement data are then compared at one and the same workpiece site before and after processing, in order to determine the geometry of the joint seam independently of the geometry of the site to be joined.09-20-2012
20120234804SPATTER REMOVING DEVICE FOR LASER WELDER - A spatter removing device for a laser welder including an optic head to which a laser beam is transferred through an optic fiber from a laser oscillator, a cross jet mounted at one side of a lower end portion of the optic head, a safety cover provided at the outside of the optic head so as to surround the optic head, and a material injection unit that injects a material to be welded below the optic head, the device includes a discharge unit and a spatter cooling device. The discharge unit is provided with a discharge pipe that discharges a welding gas and the spatter at one side portion of the safety cover. The spatter cooling device is connected to the discharge pipe and cools the spatter so that the spatter is forcibly collected.09-20-2012
20110278265Laser Welding Tool - A welding tool is configured with a housing enclosing a fiber laser system which is operative to produce a weld seam for connecting two workpieces. The fiber laser system includes a focusing optic configured to focus the output beam of the system so that it propagates through an elongated slit formed in the bottom of the housing. The fiber laser system is capable to move along a predetermined path extending parallel to the longitudinal direction of the slit and limited by the perimeter thereof. The output beam is generated only when the slit sits upon at least one of the workpieces.11-17-2011
20100078411POWDER FEED CYLINDER ASSEMBLIES AND POWDER FEEDERS - Powder feed cylinder assemblies and powder feeders are provided. A powder feed cylinder assembly includes a cylinder, a bit, and bushings. The cylinder has a main passage, a first feed channel, and a second feed channel, each feed channel at two axial locations between the cylinder's two ends. The bit extends through the main passage and has an outer surface including a helical channel formed thereon. A center bushing is disposed in the main passage between the two axial locations and has a first axially-extending passage through which the bit extends. The first end bushing is disposed in the main passage on one side of the center bushing and has a second axially-extending passage through which the bit extends. The second end bushing is disposed in the cylinder on the other side of the center bushing and has a third axially-extending passage through which the bit extends.04-01-2010
20090139967MOBILE HAND-HELD LASER WELDING SUPPORT SYSTEM - A mobile support system for a hand-held laser welding wand includes a movable cart, a laser source, a fluid source, and a filler medium supply source. The laser source is mounted on the movable cart and is configured to supply laser light for the hand-held laser welding wand. The fluid source is mounted on the movable cart and is configured to supply cooling fluid for the hand-held laser welding wand. The filler medium supply source is mounted on the movable cart and is configured to supply a filler medium for use by the hand-held laser welding wand. The mobile support system is transportable to areas remote from a work shop environment, and provides stand-alone support for the hand-held laser welding wand.06-04-2009
20090277886LASER DEVICE WITH PENDULUM-TYPE PRESSURE ROLLER - The invention concerns a laser device for joining work pieces made of plastic by means of beam welding technology, with a processing head that has focusing devices for the laser beam. Here, the focusing device that is closest to the work pieces has a rotatably supported cylinder lens in the shape of a roller that focuses the laser beam along a single axis and presses the work pieces together in the form of a line in an area around the impact point of the laser beam. In order to enable the cylinder lens to always contact the surface of the work piece facing the processing head in a precisely tangential manner, the processing head has a pendulum-type suspension for the rotatable cylinder lens. This also makes it possible for the contact pressure exerted by the processing head to always act perpendicularly on the work pieces so that they are pressed together in all welding places in the same way in a defined manner during the welding process.11-12-2009
20090179012Laser Processing Machine Component having a Corrosion-Resistant Internal Coating - A component of a laser processing machine includes an aluminum base member in which a duct is constructed in order to convey copper-ionized water. The duct has a corrosion-resistant plastic coating.07-16-2009
20100140232CLAMPING APPARATUS FOR CLAMPING AT LEAST TWO COMPONENT PARTS - The invention relates to a clamping device for clamping at least two components (06-10-2010
20090184094LASER ASSEMBLY WITH ELECTRONIC MASKING SYSTEM - The invention concerns a laser assembly for processing or joining work pieces by means of electromagnetic radiation, with a laser source that emits a laser beam, and an electronic masking system for the work pieces that succeeds the laser source. The masking system images the passing laser beam on the work pieces in a pattern that is randomly selectable. As masking system, a phase modulation array with preferably a common pixel size >4 μm is used, and also a laser source with a high beam quality of the laser beam that together permit the sharp imaging of patterns with a line width <2 mm on the work pieces.07-23-2009
20090084764Apparatus For and Method of Welding Spacer Grid - The present invention relates to an apparatus and method for capturing an image of a welding spot during a welding task and determining an accurate position of the welding spot based on the captured image in order to perform an accurate welding task. A beam splitter splits a path of light reflected from a welding section of a spacer grid from a path of a laser beam generated from a laser generator. An image sensor receives light reflected from a welding spot of the spacer grid, and senses and stores an image of the spacer grid. Welding control means controls the image sensor to capture the image of the spacer grid, receives the image of the spacer grind from the image sensor, calculates an accurate position of the welding spot based on the received image, corrects position information of the welding spot based on the calculated position, and controls a servo motor so that the laser generator can accurately collimate the welding spot based on the corrected position value.04-02-2009
20090230100Method and Device for Robot-Aided Remote Laser Welding with Simplified Control of Focusing Direction of Laser Beam - device for remote laser welding of metal sheet structures comprises an anthropomorphous robot onto whose wrist is mounted an accessory device carrying a focusing head for the laser beam coming from a laser source, as well as means for oscillating the pointing direction of the focused laser beam around one oscillation axis. During welding the robot shifts the accessory device along a given trajectory and at a given speed, while the pointing direction of the focused beam is oscillated to as to allow the area of structure that is lighted by the laser beam to shift at a speed and/or along a trajectory not depending directly on the shifting trajectory and speed of the accessory device carried by the robot.09-17-2009
20120103949LASER-INDUCED METALLURGICAL BONDING DRIVEN WITHOUT CONTACT - A laser, aimed at a flyer plate tab, causes optical energy to be directed at the tab, specifically, at a top surface thereof. Energy impacting the tab accelerates the tab into an impact with a target sheet in a time on the order of about 1005-03-2012
20090272723Vehicle floor production system - In one aspect, the present invention provides a vehicle floor production system, in which a carrier is moved through a loop formed by a return line provided at the top of the system and a welding line provided at the bottom, and the carrier is horizontally moved by the frictional force of a horizontal movement driving means. Preferred systems can reduce the manufacturing cost and required installation area.11-05-2009
20090071945BONDING DEVICE - A bonding device includes a bonding head including a bonding tool for sucking and holding an electronic component, and a laser heater for heating the electronic component by irradiating laser light on the electronic component held by the bonding tool from an inside of the bonding head, the laser heater including a collective unit for condensing laser light emitted from a light source. A focusing point of the laser light condensed by the collective unit is formed inside the bonding head.03-19-2009
20110108529System for Spot Welding with a Laser Beam - The present invention relates to a system for spot welding with a laser beam (05-12-2011
20090218325Transmission Laser Welding Method for Connecting Shaped Plastic Bodies - The present invention relates to an apparatus for welding tube segments to a tubular shaped body, and to a laser welding method for connecting a tube segment to a tubular shaped body, in which the tube wall of the tube segment is constructed from at least two material layers that differ from each other, and one of these layers contains, at least portionally, an absorber for laser radiation, comprising the steps of provision of a PVC-free tube segment and a tubular shaped body, positive insertion of tube segment and tubular shaped body into one another with the result that surface regions of the tube segment and of the tubular shaped body overlap, irradiation of the overlapping surface regions with laser radiation of defined wavelength, wherein it is unnecessary, in the case of the laser welding method, to move either the joint partners or parts of the apparatus.09-03-2009
20110174785Laser Welding Structure - A laser welding structure includes a housing, a lower metal terminal, and an upper metal terminal. The upper metal terminal is positioned above the lower metal terminal and has a smaller width than the lower metal terminal. The housing includes a groove and a sidewall that extends from the groove to an upper surface of the housing, wherein the sidewall faces the upper metal terminal and is inclined at an angle θ.07-21-2011
20110100963DEVICE FOR THE LASER TRANSMISSION WELDING OF COMPONENTS OVER A RING-SHAPED CONTACT ZONE - A device for joining by a laser beam two components along a ring-shaped contact zone jointly formed by the components using a laser beam where a first of the two components is transmissive for the laser beam and a second of the two components is absorptive for the laser beam. The device includes a receptacle configured to affix the absorptive component and an internal clamping chuck with at least one contact surface configured for placement on the transmissive component within a free inside area of the contact zone. The device also includes a pressure element with a free inside area that is larger than an extension of the contact zone, a laser source configured to emit the laser beam, a beam guide unit, a beam guide control unit, an external axial bearing, a rotatable holding wheel, and an internal axial bearing. The pressure element is connected to the internal clamping chuck via the external axial bearing, the holding wheel and the internal axial bearing so as to transmit to the internal clamping chuck contact pressure exerted on the pressure element.05-05-2011
20090127235Multi-beam laser bonding apparatus and bonding method using the same - A multi-beam laser bonding apparatus includes a laser beam irradiation unit for irradiating a unique laser beam and an optical instrument. The bonding apparatus is for bonding parts by a plurality of bonding media which are separated from each other at a predetermined distance. The optical instrument is positioned on a path of the unique laser beam for splitting the unique laser beam into a plurality of laser beams and focusing the plurality of laser beams onto the respective bonding media. The present invention also discloses a multi-beam laser bonding method with this bonding apparatus.05-21-2009
20120199564POWDER-DELIVERY APPARATUS FOR LASER-CLADDING - Powder-delivery apparatus for delivering powdered cladding-material into the vicinity of a laser-beam spot includes a plurality of powder-delivery modules. Each of the modules is arranged to receive the cladding-material and deliver the cladding-material through a plurality of nozzles. The position of the nozzles in the modules with respect to the laser-beam spot is adjustable in three Cartesian axes. The modules are selectively removable from, and attachable to the apparatus. Nozzles in any one of the modules can be selectively prevented from delivering cladding-material.08-09-2012
20110089149HEAD AND METHOD FOR LASER ARC HYBRID WELDING - A laser arc hybrid welding head and method which can form satisfactory beads at high speed are provided. A laser arc hybrid welding head (04-21-2011
20110259857ROTATING LASER WELDING PRESSURE UNIT - A laser welding pressure unit comprises a housing, a rotating element, and a foot. The housing may attach to a laser head. The rotating element may include an outer ring rotatably coupled to an inner ring, wherein the outer ring is coupled to the housing. The foot may couple to the inner ring such that the foot rotates with respect to the housing. The foot may also be configured to contact an upper surface of a metal sheet and may be oriented such that while the metal sheet is being welded, the foot rotates about a central vertical axis and the laser welding pressure unit is able to move in any direction without the foot breaking contact with the surface.10-27-2011
20120145682GRIPPER DEVICE FOR LASER WELDING AND VISION INSPECTION - A gripper device for laser welding and vision inspection is provided which includes a frame unit releasably mounted on a front end of an arm of a robot and a clamping unit mounted on the frame unit. Additionally, embodied in this single gripper device is a laser-vision exchange (first) module, a laser-vision sharing (second) module and a laser-vision target (third) module all embodied in a single gripper device to irradiate laser beam for welding a welding object and obtain a vision source of an inspection object.06-14-2012
20100176097ARRANGEMENT FOR THE REPAIR OF THE BLADES OF BLISK DRUMS BY MEANS OF LASER DEPOSITION WELDING - An arrangement for the repair of BLISK blades damaged at their leading and trailing edges by use of laser deposition welding, includes a laser source and laser optics for generating a focused laser beam (07-15-2010
20110089148LASER WELDER - An apparatus for fitting two first workpieces with respective second workpieces of different dimensions has a track extending longitudinally through an assembly station and a welding station. An assembling appliance in the assembly station has a pair of jigs each dimensioned to fit with a respective one of the second workpieces, and a holdown appliance in the welding station similarly has a pair of differently sized holddowns. The holddown appliance can move between a pair of positions in each of which a respective one of the holddowns is aligned under the welding head. A workpiece holder in which either of the first workpieces can be held is shiftable between positions in the assembly station under the assembling appliances and a position in the welding station underneath a stationary welding head therein.04-21-2011
20080296270REAL-TIME IMPLEMENTATION OF GENERALIZED PREDICTIVE ALGORITHM FOR DIRECT METAL DEPOSITION (DMD) PROCESS CONTROL - A direct metal deposition (DMD) process is stabilized by monitoring the temperature and the shape of the melt pool during deposition, applying a recursive least square (RLS) model estimation algorithm to adaptively identify process characteristics in accordance with the temperature and the shape of the melt pool, and delivering the process characteristics to a generalized predictive controller with input constraints to control the process. The process may be controlled by adjusting laser power or by adjusting the speed of the movement of the laser. In the preferred embodiment the temperature is monitored using a two-color pyrometer, and the shape of the melt pool is monitored by detecting the edge of the melt pool with a camera and/or photodetector.12-04-2008
20090166341Laser Beam Welding Structure, Laser Beam Welding Method, and Vehicle Control Unit Using the Laser Beam Welding Structure - In a laser beam welding structure for welding two workpieces by emitting a laser beam onto a work portion between the two workpieces, resin members covering the workpieces are provided at the position receiving the reflected laser beam from a surface of a melting portion on the working portion when emitting the laser beam onto the work portion. The resin members are capable of transmission of the reflected laser beam and are employed for the resin member located at the position receiving the reflected laser beam so as to absorb the reflected laser beam from the surface of the melting portion when emitting the laser beam onto the work portion between the two workpieces and to prevent burning of the resin member.07-02-2009
20090139968SEAM POSITION CONTROL FOR LASER PROCESSING - A course of a position of a positioning device is determined as a laser beam welds a workpiece at a focus area of the laser beam. The positioning device is configured to position the focus area of a laser beam on a workpiece such that a joint is formed on the workpiece. A course of the joint on the workpiece from the determined course of the position of the positioning device is estimated, and a deviation between the determined course of the position of the positioning device and the estimated course of the joint on the workpiece is calculated. The deviation represents a parameter related to the precision of the seam position control.06-04-2009
20100096369Multi-axis laser welding head for spacer grid - Disclosed therein is a multi-axis laser welding head for a spacer grid, which is one of essential components of a nuclear fuel assembly. More particularly, the multi-axis laser welding head for the spacer grid can be operated more smoothly and variously during the welding of the spacer grid to thereby weld the spacer grid more exactly and precisely. For this, the multi-axis laser welding head includes a welding head having a movement within a predetermined angle like the back and forth swing of the pendulum, and can irradiate a laser beam in various directions by having additional axis in comparison with the prior art.04-22-2010
20100288738WELDING APPARATUS AND METHOD - A welding apparatus includes a primary laser generator for emitting a primary laser beam; an arc welding power source; a consumable filler electrode; and at least one secondary laser generator for emitting a secondary laser beam. The primary laser generator, the arc welding power source, and the consumable filler electrode together form a hybrid laser welding system. The secondary laser beam impinges on a weld area before, after, or before and after focusing the hybrid laser welding system at the weld area. A welding method is also provided.11-18-2010
20120175353WELDING SYSTEM AND WELDING METHOD - A welding system is described as having an energy source, in particular a laser beam source, for implementing a heat transfer for welding a first component to at least one second component in a connection area and having a sensor for detecting the processing radiation of the welding procedure. The sensor includes a measuring probe. Also described is a welding method.07-12-2012
20120255937ROBOT SYSTEM - This robot system includes a robot, a laser emitting portion moved by the robot, capable of scanning a welding locus with a laser beam at least in a state where the laser emitting portion is not moving, and a control portion controlling the laser emitting portion to scan the welding locus with the laser beam in order to perform welding with weaving on the welding locus at least in the state where the laser emitting portion is not moving.10-11-2012
20120261393MODULAR SYSTEM FOR SURFACE WELDING INNER SURFACES OF WORKPIECES, COMPRISING A LASER BEAM AND MULTIPLE MODULES - The invention relates to a modular system for overlay welding at inwardly disposed surfaces of workpieces using a laser beam. In this respect, a coating can be formed on inwardly disposed surfaces using a powdery welding material. It is the object of the invention to provide possibilities for the overlay welding or for the coating of inwardly disposed surfaces of workpieces with a variable immersion depth, increased flexibility and independence of direction in the processing. A feed for powdery welding material, a feed for protective gas and a feed for a coolant are present on a system in accordance with the invention. The system is formed with a coupling module for the laser beam, at least one beam guiding module for the laser beam and a processing module, which can be connected to one another. A collimated laser beam is directed via the coupling module through the beam guiding modules) onto an optical element focusing the laser beam on the surface of a workpiece to be processed. A nozzle having a discharge opening for the laser beam and the protective gas as well as a passage having a discharge opening for powdery welding material are present at the processing module.10-18-2012
20120318775OPTICAL MEASURING DEVICE FOR MONITORING A JOINT SEAM, JOINING HEAD AND LASER WELDING HEAD WITH SAME - An optical measuring device for monitoring a joint seam, joining head and laser welding head. The optical measuring device monitors a joining region in a workpiece and has at least one light-section device with a first light source for casting a light fan in the direction of the workpiece to be joined, making a triangulation light line within the joining region which intersects a joint seam. An illumination device with a second light source homogeneously illuminates the joining region. A first optical sensor with a first observation beam path for spatially resolved imaging of the triangulation light line is projected onto the joint seam. A second optical sensor with a second observation beam path for spatially resolved imaging of the joint seam is coaxially coupled with the first observation beam path. The readout rate of the first and second optical sensors is >1 kHz and <500 Hz, respectively.12-20-2012
20120080413LASER WELDING APPARATUS - Together with a scanner device, an air blower is provided above a workpiece, and the air blower exhausts air in the shape of a ring toward the workpiece, the air in a ring shape surrounding an optical axis of a laser beam emitted from the scanner device. A housing of the air blower is formed in a ring shape, a ring-shaped cavity is formed in the housing, an inner ring member is attached to an undersurface of the housing, an outer ring member is attached to an outer peripheral side of the inner ring member, and a ring-shaped exhaust port is formed between the inner ring member and the outer ring member. An exhaust direction of the air is defined by inclination of an outer-peripheral-side end surface of the inner ring member and inclination of an inner-peripheral-side end surface of the outer ring member (FIG. 04-05-2012
20120285936LASER WELDING APPARATUS AND LASER WELDING METHOD - A laser welding apparatus includes: a first optical element that coaxially emits, to a welded part, a laser beam emitted from a laser light source and an object beam having a different wavelength from the laser beam; a second optical element that causes the spot diameter of the object beam to be larger than the spot diameter of the laser beam on the welded part; an optical interferometer that emits the object beam to the first optical element, detects through the first optical element the object beam reflected on the welded part, and generates an electric signal based on the detected object beam; and a measuring unit that measures a penetration depth of the welded part based on the electric signal.11-15-2012
20120241424Welding Method and Welding Apparatus - A welding technique closely contacting a light transmissive second member to a first member and radiating deflection-controlled laser light from a second member side to weld both first and second members at a weld interface thereof. A reflectance reducing means is formed by an incident angle adjusting step provided in a cover plate that is disposed on a light radiating surface side of the second member. The reflectance reducing means reduces incident angles of the light at the light radiating surfaces of the first and second members, thus reducing the reflection loss of the laser light at the light radiating surfaces and improving the welding efficiency.09-27-2012
20080223831Laser Welding Method and Laser Welding System - A focal point controlling section is configured and arranged to control a focal point of the laser beam outputted from a laser oscillator to selectively focus the laser beam on a surface of a workpiece. A laser irradiation position moving section is configured to move a laser irradiation position at which the laser beam strikes on the surface of the workpiece. A control unit is configured to change a heat amount imparted on the surface of the workpiece to switch between a welding state and a non-welding state by controlling at least one of the focal point controlling section and the laser irradiation position moving section while controlling the laser oscillator to continuously output the laser beam before and after switching between the welding state and the non-welding state.09-18-2008
20130134139PULSED LASER MACHINING METHOD AND PULSED LASER MACHINING EQUIPMENT, IN PARTICULAR FOR WELDING WITH VARIATION OF THE POWER OF EACH LASER PULSE - A laser machining method includes A) generating, by a laser source, a laser beam having an initial wavelength between 700 and 1200 nanometers of laser pulses; B) doubling frequency of one part of the laser beam by a non-linear crystal; C) varying power throughout each emitted laser pulse so that the power profile has a maximum peak power or part of the pulse with a maximum power in an initial sub-period, and throughout an intermediate sub-period of longer duration than the initial sub-period, a lower power than the maximum power. The maximum power value is at least two times higher than the mean power throughout the laser pulse and an increase time to maximum power from a start of each laser pulse is less than 0.3 milliseconds. The machining method can concern welding highly reflective metals, copper, gold, silver, or an alloy including one of these metals.05-30-2013
20080197118Laser Machine Tool - A laser machine tool for carrying out cutting or welding operations includes a laser head carried by a moving member which is displaceable with respect to a workpiece along two horizontal cartesian axes in a relatively wide space with movements involving relatively low accelerations. The laser head is displaceable on the moving member, along a pair of horizontal cartesian axes in a relatively restricted space with high speeds and accelerations, via a pair of slides to which respective balancing weights are operatively associated.08-21-2008
20110240612WELDING APPARATUS AND WELDING METHOD - A welding apparatus includes a table on which first, second and third blanks are to be fixed, a first positioning station where the first and second blanks are fixed on the table, a first welding station where the first and second blanks are welded together at their abutting surfaces, a cutting station where the abutting surface of the first or second blank or both is cut into a predetermined shape, a second positioning station where the third blank is fixed on the table, and a second welding station where the third blank and the first or second blank or the first and second blanks are welded together at their abutting surfaces.10-06-2011
20130153549APPARATUS AND METHOD FOR MANUFACTURING A SWING-RING PLATE - Disclosed is an apparatus and method for manufacturing a swing-ring plate. More particularly, the apparatus and method for manufacturing the swing-ring plate comprises a bending mechanism that moves a linear plate cut to a certain length from a first side to a second side, and bends the linear plate so as to face both ends thereof each other to form a ring shape; a pre-bonding mechanism that fixes the bent plate in the ring shape and pre-bonds the ends in the horizontal and vertical directions; and a final bonding mechanism that completely bonds the pre-bonded part of the plate by revolving around the fixed pre-bonded plate and positioning so that the top and bottom surfaces of the pre-bonded plate face upward. According to the present invention, due to the fact that the swing-ring plate can be manufactured by bending a single plate, the traditional task of adjusting the smoothness of each part can be reduced, reducing work time and costs, and particularly, due to the lack of wasting raw materials, as occurs in the traditional processing of a unit plate that carries a certain curvature from a limited area, manufacturing costs can be further reduced, and smoothness can be readily adjusted to improve product reliability.06-20-2013
20100314362WELD DEFECT DETECTION SYSTEMS AND METHODS FOR LASER HYBRID WELDING - Laser hybrid welding systems adapted to identify and/or fix a weld defect occurring during a laser hybrid welding process are provided. Embodiments of the laser hybrid welding system may include one or more devices that provide feedback to a controller regarding one or more weld parameters. One embodiment of the laser hybrid welding system includes sensors that are adapted to measure the weld voltage and/or amperage during the welding process and transmit the acquired data to the controller for processing. Another embodiment of the laser hybrid welding system includes a lead camera and a lag camera that film an area directly in front of the weld location and directly behind the weld location.12-16-2010
20110309057LASER HEATING APPARATUS FOR METAL EUTECTIC BONDING - A laser heating apparatus for metal eutectic bonding is disclosed in the present invention. The laser heating apparatus has a table for supporting a substrate having a first metal; a holding unit, located above the table and moving with respect to the table, for holding an object having a second metal above the table; and a laser generator, installed below the table and moving with respect to the table, for providing a laser beam which passes through the table and the substrate to melt the first metal, to facilitate the first metal to adhered to the second metal, thereby bonding the substrate with the object. The apparatus provides good heat conduction and stability. Furthermore, the holding unit used is not only for positioning, but also exerting a pressure on the bonding metals. It makes eutectic bonding process easier and more efficient.12-22-2011
20130193123METHOD FOR INSPECTING THE QUALITY OF A SOLDER JOINT - A method for monitoring quality of a weld, includes implementing a probabilistic statistical model, for determining a rating of the quality of the weld.08-01-2013
20130193124DUAL FILLET WELDING METHODS AND SYSTEMS - A system and method of hybrid welding a dual fillet weld. The system includes a laser system that leads a first torch and preheats at least one workpiece. The system also includes a first welding power supply that supplies a first welding waveform to a first wire via the first torch. The first welding waveform creates a first arc between the first wire and the at least one workpiece. The system further includes a second welding power supply that supplies a second welding waveform to a second wire via a second torch. The second welding waveform creates a second arc between the second wire and the at least one workpiece. A controller in the system is operatively coupled to the first power supply, the second power supply and the laser system. The controller synchronizes the first welding waveform and the second welding waveform such that welding current pulses of the second welding waveform at the second torch are not in phase with welding current pulses of the first welding waveform at the first torch. The system is set up such that the first arc and the second arc are across from each other on opposite sides of a weld.08-01-2013

Patent applications in class Welding

Patent applications in all subclasses Welding