With Indicator (e.g., Recorder) Patents (Class 219/109)
  • Patent number: 10335653
    Abstract: A golf club head comprising at least one part manufactured via a metal injection molding process, and attached to another part of the golf club head via electrical resistance welding, is disclosed herein. The present invention is also directed to a method of making said golf club head, the method comprising the steps of providing a first golf club head part made from a first metal material, metal injection molding a second golf club head part from a second, different metal material, and electrical resistance welding the second golf club head part to the first golf club head part to form a combined part.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: July 2, 2019
    Assignee: Callaway Golf Company
    Inventors: Matthew R. Daraskavich, Joshua D. Westrum, Scott Manwaring, Kenneth E. Meacham, Catherine L. Ingbar, Justin Kuhar
  • Patent number: 10293429
    Abstract: A spot welding quality check system, which can be easily used and can be adapted to various situations. The check system has: a pair of electrodes configured to move toward or away from each other and apply current to a workpiece while pressurizing the workpiece; a displacement detecting part which detects an amount of displacement between the electrodes during spot welding; a checking part which estimates as to whether welding quality is good or poor by using an inner function, based on the detected amount of displacement; a correction receiving part which receives a correction by an operator regarding the estimated welding quality; and a learning part which updates the inner function based on an estimation result when the correction receiving part does not receive the correction, and updates the inner function based on a content of the correction when the correction receiving part receives the correction.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: May 21, 2019
    Assignee: FANUC CORPORATION
    Inventor: Yasuhiro Amagata
  • Patent number: 10241039
    Abstract: An analyser 10 for identifying or verifying or otherwise characterising a liquid based drug sample 16 comprising: an electromagnetic radiation source 11 for emitting electromagnetic radiation 14a in at least one beam at a sample 16, the electromagnetic radiation comprising at least two different wavelengths, a sample detector 17 that detects affected electromagnetic radiation resulting from the emitted electromagnetic radiation affected by the sample, and a processor 18 for identifying or verifying the sample from the detected affected electromagnetic radiation, wherein each wavelength or at least two of the wavelengths is between substantially 1300 nm and 2000 nm, and each wavelength or at least two of the wavelengths is in the vicinity of the wavelength(s) of (or within a region spanning) a spectral characteristic in the liquid spectrum between substantially 1300 nm and 2000 nm.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 26, 2019
    Assignee: Klein Medical Limited
    Inventors: Donal Paul Krouse, Raymond Andrew Simpkin, Bryan James Smith
  • Patent number: 10058948
    Abstract: A method and apparatus for providing welding-type power is disclosed and includes a means for communicating and a means for locating a cable. A welding power supply has a controller, a power circuit and a weld cable locator module with a cable locator output connected to the controller, the power circuit, and/or a weld cable connection. The distal end of the cable is located, and the proximal end is connected to the power supply. An identifying signal is provided to the proximal end and transmitted to the distal end where it is detected. A pendant with a cable sensor and a transmitter responsive to the cable sensor can be provided. The cable sensor can include an RFID reader and/or a bar code reader.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 28, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Timothy N. Temby, James F. Rappl, Joseph E. Feldhausen, Todd E. Holverson, Michael H. Novak, Jeffery R. Ihde, Joseph C. Schneider, Bruce P. Albrecht, Thomas A. Bunker, Clay A. Byron
  • Patent number: 10055835
    Abstract: The present invention discloses methods and apparatus for increasing inspection efficiency and reducing time for analyzing an image when inspecting contamination and alignment of the welding tip of the spot welding gun. An apparatus for inspecting a welding tip according to some embodiments of the present invention is configured to inspect the contamination and the alignment of the welding tip based on an end-surface image and a profile image of the welding tip. In particular, when recording the welding tip through an internal housing arranged in an internal space of an external housing, the noise generated from an external light source can be blocked, and hence the contamination and the alignment of the welding tip can be inspected by using a clearer image, thus improving the accuracy of the inspection.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: August 21, 2018
    Assignee: AUTOIT CO., LTD
    Inventor: Myung Hwan Jeong
  • Patent number: 10036731
    Abstract: A non-destructive weld testing system for testing spot welds includes a weld monitoring tool monitoring at least one weld characteristic of the spot welds and generating weld data based on the at least one weld characteristic; a weld analysis tool analyzing the weld data to determine a weld quality of each spot weld based on analysis criteria; and a non-destructive weld testing tool configured to test spot welds. The weld testing system causes the weld testing tool to target testing of spot welds determined by the weld analysis tool to have a weld quality beyond a threshold weld quality. The weld testing tool may be a robot-mounted phased array transducer generating weld test data based on testing results and provides feedback to the weld analysis tool correlating to the weld test data. The weld analysis tool updates the analysis criteria based on the weld test data.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 31, 2018
    Assignee: Honda Motor Co., Ltd.
    Inventors: Paul C. Edwards, II, Makoto Furukawa
  • Patent number: 10010978
    Abstract: A method for determining a quality of at least one aluminum weld comprises detecting a force exerted on a workpiece by at least one electrode, and determining at least one factor characterizing the quality on the basis of a comparison of the detected force with at least one reference value. An aluminum welding method, a welding device set up for a corresponding operation, a welding controller and a computer program are likewise the subject matter of the disclosure.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: July 3, 2018
    Assignee: Robert Bosch GmbH
    Inventor: Juergen Haeufgloeckner
  • Patent number: 9945402
    Abstract: A piston actuator (10) includes a housing (12) having a hollow interior (12a) for enclosing a piston (14) defined by a head (14a) and a rod (14b). The piston (14) can reciprocate between first and second end limits of travel within the housing (12) and separates the housing (12) into first and second expandable fluid chambers (16a, 16b). The housing (12) has a rod-end opening (12b) at one end and a head-end opening (12c) at an opposite end. The piston (14) can include a longitudinally extending aperture (14c) formed therein with an open end (14d) facing the head-end opening (12c) of the housing (12). A magnet (18) can be supported by the piston (14) adjacent to the open end (14d) of the longitudinally extending aperture (14c) in the piston (14).
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: April 17, 2018
    Assignee: BORGWARNER INC.
    Inventors: Ronald P. Typinski, Dennis R. Que, Scott J. Abramczyk
  • Patent number: 9902010
    Abstract: A welding robot comprising an arm having a wrist part and upper arm part rotatably connected to each other, a welding torch attached to the arm at the wrist part side, a wire feed device attached to the arm at the upper arm side, a welding cable connected to both of the wire feed device and the welding torch for holding a welding wire, a control part for controlling operation of the arm so that the welding torch is moved over a welding path, and a monitoring part for monitoring if the amount of flexure of the welding cable caused by operation of the wrist tilt axis located between the wrist part and upper arm part while the welding torch is moved over the welding path under the control of the control part is within an allowable range.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: February 27, 2018
    Assignee: FANUC CORPORATION
    Inventor: Shigeo Yoshida
  • Patent number: 9862051
    Abstract: A welding system or an enterprise using welding systems can communicate with cloud-based resources for the provision of services and products to facilitate the welding operations. The communications may be via wired or wireless media, and may be direct, or through other components, such as enterprise networks, peripheral devices, and so forth. The cloud-based resources may provide for storage of data, particularly welding data, processing of data, welding protocols, specifications and processes, financial transactions for the purchase, licensing or use of welding-related products and services, welding training, and so forth.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 9, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Bruce Patrick Albrecht, Quinn William Schartner, Edward J. Panelli
  • Patent number: 9839967
    Abstract: A welding or cutting system is provided using a performance module which monitors the real-time performance of a welding or cutting system and displays this information on a user interface on the system. Other embodiments of the system also include a cost calculation function in which a cost of the welding or cutting operation is calculated.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: December 12, 2017
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Todd Kooken, Matthew Jon Krueger, Lifeng Luo
  • Patent number: 9839972
    Abstract: The disclosure concerns a method for monitoring and/or controlling a quality of spot weldings of a processing island, comprising at least two welding controls on one or more workpieces, wherein the method is based on a comparing of the measured values and an outputting of a fault message taking place from a central control of the processing island, the central control being in communicating connection with every welding control, in order to control them appropriately in dependence on all of the measured values and the predefined tolerance margin, the welding controls being in communicating connection with one another.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: December 12, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Haeufgloeckner, Sebastian Zeller, Joachim Rathke
  • Patent number: 9815137
    Abstract: As a correction amount is acquired a deviation between a first rotational angle of a servo motor when a reference movable electrode is brought into contact with a reference opposite electrode and a second rotational angle of the motor when the reference movable electrodes pushes in the reference opposite electrode with a predetermined pressing force; and a third rotational angle of the servo motor when a movable electrode to be measured pushes in an opposite electrode to be measured with the same pressing force is corrected based on the correction amount.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: November 14, 2017
    Assignee: FANUC CORPORATION
    Inventor: Toshimichi Aoki
  • Patent number: 9757932
    Abstract: A device for curing an electrically conductive adhesive arranged between a first component and a second component. The device includes at least one punch to both apply a compressive force onto the first component in the direction of the second component, and introduce a current into the adhesive via the components.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: September 12, 2017
    Assignee: MAGNA STEYR Engineering AG & Co KG
    Inventors: Daniel Hrach, Franz Mayr
  • Patent number: 9678175
    Abstract: Eddy current detection probes and related methods are disclosed. In some embodiments, the eddy current detection probes are hybrid probes, including a solid state sensor and a detection loop. In some embodiments, the eddy current detection probes include a drive coil and a detection loop, with the detection loop having a sensitive axis that is not parallel to principal axis of the drive coil. In some such embodiments, the sensitive axis of the detection loop is perpendicular to the principal axis of the drive coil.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: June 13, 2017
    Assignee: Radiation Monitoring Devices, Inc.
    Inventors: Timothy C. Tiernan, Mark Steinback, Noa M. Rensing, Evan Weststrate
  • Patent number: 9610649
    Abstract: A spot welding system is disclosed. In particular, the spot welding system includes an upper moving unit provided with an upper electrode and a lower moving unit mounted separately from the upper moving unit and provided with a lower electrode corresponding to the upper electrode. Together, the upper moving unit and the lower moving unit separately vary a position of the lower electrode to allow for reduced size restrictions of objects to be spot welded therein.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: April 4, 2017
    Assignee: Hyundai Motor Company
    Inventor: Hyunwoo Lee
  • Patent number: 9497360
    Abstract: A small camera module is simply assembled in a short time, while reducing displacement of a camera relative to the first and second frames. Specifically, the camera module is assembled by bending a pair of clips to engage engaging portions of the clips with engaging recesses of the first and second frames to fix the first frame, camera holders, and the second frame, with the first and second frames located at both sides of each camera holder with a housing recess facing outward, and using resilient force of each of the clips to press the camera with a projection of the clip.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: November 15, 2016
    Assignees: KEYLEX CORPORATION, KYOKUTOH CO., LTD.
    Inventors: Kenji Sogo, Toshimasa Yamane, Yoshiaki Yamane, Kotaro Nakajima
  • Patent number: 9446471
    Abstract: Systems and methods for reading data from and/or writing data to various components of a welding installation are provided. The data is exchanged between devices using near field communication.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 20, 2016
    Assignee: Lincoln Global, Inc.
    Inventors: Edward Hillen, Michael Volzer, Nick Trinnes
  • Patent number: 9440307
    Abstract: 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.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: September 13, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Teshima, Yoshinori Shibata, Tokujiro Konishi, Masashi Furukawa
  • Patent number: 9358921
    Abstract: A light emitting diode (LED) signal lamp includes a lamp housing having at least one light opening, a power connection mounted on the lamp housing for connection to a power cable, a plurality of LEDs mounted within the lamp housing to shine through the at least one light opening when powered, and a control circuit for supplying electrical power to the plurality of LEDs via the power connection. The control circuit is configured to permit the LED signal lamp to safely, reliably and effectively interact with wayside control systems designed for incandescent signal lamps.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: June 7, 2016
    Assignee: Virginia Electronic & Lighting, LLC
    Inventor: Forrest Owen Gary
  • Patent number: 9302397
    Abstract: A prediction system includes an acquisition device, an execution device, and a prediction device. The acquisition device is configured to acquire a value of electric resistance of a cable secured by fixing members to a pair of link members configured to rotate relative to each other through a joint. The execution device is configured to cause the joint to execute a predetermined operation. The prediction device is configured to predict a service life of the cable based on a change in the value of electric resistance acquired by the acquisition device while the execution device is causing the joint to execute the predetermined operation.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: April 5, 2016
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Kazuhiko Kimoto
  • Patent number: 9296062
    Abstract: 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.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: March 29, 2016
    Assignee: Tessonics Corporation
    Inventors: Roman Gr Maev, Andriy M Chertov, John M Paille, Frank J Ewasyshyn
  • Patent number: 9285402
    Abstract: Methods and apparatus are disclosed for estimating a measure of a localized impedance property of a continuous conductive medium or other conductive system presenting a plurality of conductive paths, and for using such measures to compute a spatial distribution and/or image of impedance properties.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: March 15, 2016
    Inventor: Jack S. Emery
  • Patent number: 9114473
    Abstract: Disclosed is a robot pre-heat and inter-pass welding device that is capable of pre-heating and welding one or more weld joints using a single robot. Pre-heating and welding models are used to ensure that a desirable pre-heat temperature is maintained on the weld piece at the location of the weld. Infrared temperature sensors are utilized to detect temperature of the weld piece, which are transmitted to a controller, which controls the operation of both the pre-heating and welding. Multiple welds can be performed if additional time is needed for cooling, which reduces the overall time required to perform the welding process.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 25, 2015
    Assignee: WOLF ROBOTICS, LLC
    Inventors: Lance F. Guymon, Jon Kramer, Zachary Bennett, James R. Pring, Steve Carey, Brent Wessel
  • Patent number: 9089924
    Abstract: An indirect spot welding method is provided in which, in indirect spot welding, nuggets formed in a fused state can be stably obtained. In the indirect spot welding method, the welding time is divided into two time periods t1 and t2, where electrode force F1 and current C1 are applied in the first time period t1, and electrode force F2 lower than electrode force F1 and current C2 higher than current C1 are applied in the next time period t2.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: July 28, 2015
    Assignee: JFE Steel Corporation
    Inventors: Muneo Matsushita, Rinsei Ikeda
  • Publication number: 20150108100
    Abstract: The disclosure concerns a method for monitoring and/or controlling a quality of spot weldings of a processing island, comprising at least two welding controls on one or more workpieces, wherein the method is based on a comparing of the measured values and an outputting of a fault message taking place from a central control of the processing island, the central control being in communicating connection with every welding control, in order to control them appropriately in dependence on all of the measured values and the predefined tolerance margin, the welding controls being in communicating connection with one another.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventors: Juergen Haeufgloeckner, Sebastian Zeller, Joachim Rathke
  • Patent number: 8847100
    Abstract: A robot welding apparatus including a welding station having a welding robot with weld tips for creating a weld along a work piece. A welding power supply and control pendant is also provided. A visual screen of the control pendant provides a view of the weld tips for use with the method to detect characteristics such as weld tip face measurement, tip wear measurement, tip alignment measurement, and cap replacement and type verification.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: September 30, 2014
    Assignee: Fanuc America Corporation
    Inventors: Timothy J. Holcomb, Scott M. Dreslinski
  • Patent number: 8803024
    Abstract: A method to diagnose weld integrity in a welding process includes monitoring a weld indentation characteristic, comparing the monitored weld indentation characteristic to a threshold weld indentation characteristic, and identifying a discrepant weld when the weld indentation characteristic comparison shows the monitored weld indentation characteristic violates the threshold weld indentation characteristic.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: August 12, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Pei-Chung Wang, Zongqing Lin, Xinmin Lai, Yansong Zhang, Guanlong Chen, Sheila A. Marin
  • Publication number: 20140061169
    Abstract: 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.
    Type: Application
    Filed: August 22, 2013
    Publication date: March 6, 2014
    Inventors: Michael A. Sammons, Jeff M. Herb, James R. Totzke, Jon M. Patterson, Ashok Darisipudi
  • Patent number: 8648903
    Abstract: The invention relates to a device (22) for evaluating an image (20) produced on a carrier material (8) by spot welding of a weld spot (19) using an optical image-detecting unit (23), comprising a camera (24) which consists of at least one detection means (25) and one lens (26). In order to create an evaluation device (22), by means of which the optical quality testing of spot-weld joints can be improved, the image-detecting means (23) comprises an illumination device (27) with a diffusor (28) for diffusively and homogeneously illuminating an image (20) of the spot-welding on the carrier material (8). Furthermore, the invention relates to a welding tool (1) for a spot-welding plant, in particular a welding gun (2), having an evaluation device (22) for analyzing an image (20) of a spot weld (19) on a carrier material (8).
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: February 11, 2014
    Assignee: Fronius International GmbH
    Inventor: Mario Loipetsberger
  • Publication number: 20140034617
    Abstract: An arc welder including an integrated monitor is disclosed. The monitor is capable of monitoring variables during a welding process and weighting the variables accordingly, quantifying overall quality of a weld, obtaining and using data indicative of a good weld, improving production and quality control for an automated welding process, teaching proper welding techniques, identifying cost savings for a welding process, and deriving optimal welding settings to be used as pre-sets for different welding processes or applications.
    Type: Application
    Filed: October 3, 2013
    Publication date: February 6, 2014
    Applicant: Lincoln Global, Inc.
    Inventors: Joseph A. Daniel, Bruce J. Chantry
  • Publication number: 20130337284
    Abstract: 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.
    Type: Application
    Filed: March 2, 2012
    Publication date: December 19, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Onda, Goro Watanabe, Morimasa Murase, Yasuhiro Ishii, Tsunaji Kitayama, Hisaaki Takao, Hideki Teshima, Yoshinori Shibata, Tokujiro Konishi, Naotoshi Tominaga
  • Publication number: 20130334179
    Abstract: 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.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 19, 2013
    Inventor: Reinhard Scholz
  • Patent number: 8415582
    Abstract: A method of monitoring and maintaining a weld cap which is executing successive resistance welds on a plurality of workpieces includes measuring a first weld indentation formed during a first resistance weld and measuring a second weld indentation formed during a second resistance weld. The measured first and second weld indentations are compared with a severe threshold. If either of the measured first or second weld indentations is greater than the severe threshold, an abnormal condition is signaled. The method may include tip dressing the weld cap based upon the signaled abnormal condition. The method may further include determining a degradation rate between the first resistance weld and the second resistance weld. The degradation rate is the time differential between the measured first and second weld indentations, and either a first or a second tip dressing schedule is chosen based upon the determined degradation rate.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: April 9, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Pei-Chung Wang, Daniel C. Hutchinson, Michael J. Karagoulis, Sheila A. Marin
  • Publication number: 20130075371
    Abstract: A method and system for non-destructive evaluation of one or more welds of a stator includes activating the stator welds using an electrical current; recording radiometric thermal images of the welds over time; and analyzing a temperature-time profile of a weld to qualify the weld by one or more of estimating the size of the weld, determining if the temperature of the activated weld has exceeded a predetermined temperature at a predetermined time, or comparing the temperature-time profile of the weld to a reference. The stator may be configured as a bar wound stator. A mask may be applied to the stator to reduce reflections or emissions from non-weld thermal sources.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Urban J. De Souza, Edward Panozzo, Daniel L. Simon, John S. Agapiou, Xiaoling Jin
  • Patent number: 8183493
    Abstract: A system for monitoring a weld operation is provided. The system includes an ultrasonic wave generator adapted to deliver an ultrasonic wave to a target material during the weld operation and an ultrasonic receiver adapted to receive the ultrasonic wave propagated through the target material. The system also includes a signal processor adapted to determine a quality level of a weld created during the weld operation by extracting data corresponding to a torsional mode from the ultrasonic wave and comparing the data to a profile that corresponds to an acceptable quality level.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: May 22, 2012
    Assignee: General Electric Company
    Inventors: Thomas James Batzinger, Waseem I. Faidi, Sivaramanivas Ramaswamy, Manoj Kumar Koyithitta Meethal, York Oberdoerfer, Gerhard Splitt, Werner Roye, Johannes Buechler, Rajagopalan Chandrasekharan
  • Patent number: 8178817
    Abstract: Spot welding tongs for robotic applications in resistance welding of workpieces, in particular sheets, comprise tong arms, mounted such as to pivot on a base body. These tongs which may be adjusted and to which electrode holders for the electrodes are fixed and a winding device with a pay-out roller and a wind-in roller, for the winding in and out of a strip to protect at least one electrode. These spot welding tongs may be produced, in which access is not seriously affected and with a very simple and compact construction, whereby the pay-out roller and the wind-in roller of the winding device are arranged on the base body, or the tongs arm and at least one guide groove, for guiding the strip, is arranged in the tongs arm and/or the electrode holder.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: May 15, 2012
    Assignee: Fronius International GmbH
    Inventors: Walter Stieglbauer, Günter Weigerstorfer
  • Patent number: 8027819
    Abstract: According to exemplary embodiments of the present invention, a fracture prediction device for a spot welded portion can be provided. For example, the device may include an input arrangement configured to input all or some of a material strength, a plate thickness, a nugget diameter of a spot welding, a plate width of a joint, and a rotation angle of the joint in a tension test, based on a cross tension test and/or a shear tension test at a spot welded joint. The device can also include a first calculation arrangement configured to calculate a fracture strength parameter of the spot welded portion. A parameter storage arrangement may also be provided which can be configured to store the fracture strength parameter by each steel type. Further, the device may further have a second calculation arrangement configured to determine a fracture of the spot welded portion.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: September 27, 2011
    Assignee: Nippon Steel Corporation
    Inventors: Hiroshi Yoshida, Naruhiko Nomura, Akihiro Uenishi
  • Patent number: 7858896
    Abstract: A spot welding gun for resistance welding of workpieces, includes a base body and a bracket, in which electrode holders are arranged, the electrodes being in turn arranged in the holders. At least one electrode holder is fixed to an actuator that enables the electrode holder fixed thereto with the electrode to be displaced in longitudinal direction towards other electrodes. To protect the electrodes a winding device with a band is arranged, the band being displaceably arranged between the contact surface of the electrode and the workpiece opposite the electrode. The winding device assigned to the displaceable electrode is connected to the displaceable electrode so that it moves at the same time as the electrode when the electrode is moved in longitudinal direction. The electrode holders and the electrodes have devices for guiding the band from the winding device axially along the electrode holders towards the electrode and vice versa.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: December 28, 2010
    Assignee: Fronius International GmbH
    Inventors: Walter Stieglbauer, Günter Weigerstorfer
  • Patent number: 7687099
    Abstract: A spray coating apparatus comprises a spray gun (12) operable to deposit a sprayed coating via a spray nozzle (18) onto a surface, a mapping means (22) associated with the spray gun (12) operable to ascertain and store topographical characteristics of the surface, a position sensor (28) operable to ascertain the position of the spray gun (12) relative to the surface, a coating thickness monitor (26) operable to ascertain the thickness of a coating applied to the surface, and a nozzle control means (24) operable to control the deposition of the sprayed coating, wherein the nozzle control means (24), in use, control the deposition of the sprayed coating in response to information provided by the position sensor (28), the coating thickness monitor (26) and the mapping means (22).
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: March 30, 2010
    Assignee: BAE Systems PLC
    Inventor: Paul Edward Jarvis
  • Patent number: 7564005
    Abstract: A method of monitoring a resistance welding system is provided. The method utilizes a sensor for isolating and determining movement of a pin that typically supports an object to be welded such as a fastener. The movement of the pin is used to determine various present welding operation parameters to reduce cycle time, and increase efficiency and quality of the weld. The present welding operation parameters are compared to learned or stored welding operation parameters, for example, to determine whether a fault should be generated or whether an acceptable weld was achieved.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: July 21, 2009
    Assignee: Doben Limited
    Inventors: Daniel Martin Cabanaw, David M. Beneteau
  • Patent number: 7371990
    Abstract: A cable monitoring system, which monitors failure of a plurality of cables connecting a power supply and a welding gun, has voltage detection lines connected to arbitrary two points of each of the cables, an insulating transformer a primary side of which is connected to the voltage detection lines of each cable, and a failure detector connected to a secondary side of the insulating transformer and detecting failure of each cable based on voltage on the secondary side of the insulating transformer for each cable.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: May 13, 2008
    Assignees: Nissan Motor Co., Ltd., Dengensha Manufacturing Company Limited
    Inventors: Seiji Nomizu, Masao Furuichi, Shigeru Ohkubo, Masatoshi Tsuchiya
  • Publication number: 20080041827
    Abstract: A resistance spot welding monitoring system includes a plurality of sensors coupled to a resistance spot welding system to receive welding data produced during a welding operation. The monitoring system further includes a nugget prediction system. The welding data is indicative of welding parameters used to produce the weld nugget. The nugget prediction system retrieves the welding data and predicts a nugget size based upon the welding data received from the plurality of sensors. Additionally, the nugget prediction system generates a nugget size signal. The monitoring system also includes an indicator that receives the nugget size signal and notifies an operator of a predicted nugget size.
    Type: Application
    Filed: May 10, 2007
    Publication date: February 21, 2008
    Inventors: Wei Li, Daniel Cerjanec, Gerald A. Grzadzinski
  • Publication number: 20070295700
    Abstract: A system, method and software product for modeling spot welds in a finite element analysis is described. The spots welds are represented by beam elements or solid elements in accordance with an indicator flag. The flag may also be specified as the number (e.g., an integer such as 1, 4, 8 or 16) of solid elements in a cluster representing spot weld. The solid elements may include, but not limited to, hexahedron, tetrahedron, and the likes. The number of solid elements and required nodes are generated for each spot weld based on the indicator flag. A table is formed to group the generated solid elements in a cluster together, so that the force and moment resultants of the spot weld can be computed and assembled in a file.
    Type: Application
    Filed: November 30, 2006
    Publication date: December 27, 2007
    Applicants: LIVERMORE SOFTWARE TECHNOLOGY CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Emily Nutwell, Duane Detwiler, John O. Hallquist
  • Patent number: 7259349
    Abstract: A method for monitoring the quality of spot welding, in particular for robotic applications. Workpieces, such as metal sheets are welded together using spot welding tools. The sheets are placed between at least two electrodes, which are pressed against one another and supplied with energy. The spot weld is evaluated using an evaluation element, in particular an optical visualization. A tape is placed between the electrodes or electrode caps and the sheets. The tape is transported onwards after the welding process. The tape is configured in such a way that a mirror-image, in particular a proportional reproduction or impression of the spot weld that has been produced on the workpiece is created by the welding process on the tape. The reproduction or impression is detected and evaluated by the evaluation element and the size, shape and position of the spot weld are deduced.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: August 21, 2007
    Assignee: Fronius International GmbH
    Inventors: Walter Stieglbauer, Manfred Wimmer, Wolfgang Zauner
  • Patent number: 7256365
    Abstract: A connecting element for connecting and/or fixing an electrode with an electrode arm of a welding apparatus has a base body; and a sensor selected from the group consisting of a sensor for introducing ultrasound waves into an electrode, a sensor for receiving ultrasound waves and both.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: August 14, 2007
    Assignee: Bosch Rexroth AG
    Inventors: Michael Platte, Heinz-Ullrich Mueller, Michael Lach, Volker Arndt
  • Patent number: 7253632
    Abstract: In a method for qualifying an electric circuit having at least one contact, a reference function of thermoelectric voltage versus time of a faultless electric circuit is provided. The circuit is heated by at least one measuring electric impulse. Thermoelectric-voltage-versus-time data of the electric circuit is acquired. The circuit is qualified based on the differences between the acquired data and the reference function. Additionally, in a method for localizing a weak or bad contact of an electric circuit, the circuit is heated by at least one measuring electric impulse, and thermoelectric-voltage-versus-time data of the circuit is acquired. The acquired data is then compared to reference functions of thermoelectric voltage versus time data of known circuits with weak or bad contacts. The weak or bad contact of the circuit is localized in accordance with the similarities between the acquired data and the reference functions.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: August 7, 2007
    Assignee: General Electric Company
    Inventors: István Magai, Ferenc Fazekas
  • Patent number: 7244905
    Abstract: A method for estimating weld nugget diameter includes receiving current and voltage inputs, a time input, and a force input. In certain embodiments, the method also uses other weld parameters including type of material, type of stack, stack thickness, applied force, preheat current, RMS value of weld current, weld level, and weld time. The method further determines a resistance curve based on the current and voltage inputs, and time input. It also derives parameters from the resistance curve, and determines a weld nugget diameter estimate based on both resistance parameters.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: July 17, 2007
    Assignee: DaimlerChrysler Corporation
    Inventors: Manohar Das, James W. Strausbaugh, Vernon Fernandez, Gerald Grzadzinski
  • Patent number: 7203133
    Abstract: The invention relates to an ultrasound sensor system, especially for a welding electrode, comprising a sensor (5, 6, 7, 10) which, during the detection process, passes ultrasonic waves of a desired oscillation mode into areas to be detected and/or detects ultrasonic waves. At least one material recess (2) is provided in a sensor support (1), and at least one sensor (5, 6, 7, 10) is arranged in said recess.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: April 10, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Stumm, Volker Arndt, Norbert Blumentritt, Michael Lach, Michael Platte
  • Patent number: 7197933
    Abstract: A sensor carrier is provided that has at least one oscillating element (32) that introduces ultrasonic waves into an area to be examined and/or receives ultrasonic waves coming from the area to be examined, whereby the oscillating element (32) is located in an oscillator carrier (33), and the oscillator carrier (33) has connecting means (36, 37, 38, 39) for connection with the electrode (31).
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: April 3, 2007
    Assignees: Robert Bosch GmbH, Karl Deutsch Pruef- und Messgeraetebau GmbH & Co. KG
    Inventors: Volker Arndt, Michael Lach, Michael Platte, Heinz-Ullrich Mueller