Circuits Patents (Class 219/137.71)
  • Patent number: 10363626
    Abstract: The present invention refers to a control method and welding equipment for MIG/MAG-welding with presence of short-circuiting droplets between an electrode end and a workpiece. The method comprises establishment of a short-circuiting time, establishment of an arc time, and controlling the energy supplied to the electrode. The energy supply is controlled in such a way that the energy supply is increased if a measured short-circuiting time of a total period time, where the period time is the sum of the short-circuiting time and the arc time, exceeds a defined adjustable set value and decreases if said short-circuiting percentage goes below said set value.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: July 30, 2019
    Assignee: ESAB AB
    Inventor: Per Åberg
  • Patent number: 10183351
    Abstract: An arc welding system includes a welding torch, an electrode, and a power supply having a switching-type power converter connected to the torch. A parallel state-based controller is connected to the power converter and provides a waveform control signal thereto for controlling its operations. The controller generates a motion control signal for controlling movements of the electrode and/or the torch. A sensor senses welding voltage or welding current. A memory stores a welding state table comprising sequential control states, and stores a motion control system state table comprising further sequential control states. The welding waveform is defined in the welding state table. The controller controls the operations of the power converter through the waveform control signal according to the welding state table, simultaneously adjusting the motion control signal according to the motion control system state table. The controller transitions between control states according to the signal received from the sensor.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: January 22, 2019
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Steven Peters, Judah Henry, Stephen Cole
  • Patent number: 10065257
    Abstract: A welding system including a power supply, a torch electrically connected to said power supply, a wire feeder that provides a welding consumable to the torch, a controller that communicates with a motor associated the wire feeder and the power supply. The controller obtains a wire feed speed of said motor as it accelerates from a run-in speed to a pre-set speed and controls the power supplied to the torch based on this wire feed speed to reduce stubbing or spattering during arc initiation.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: September 4, 2018
    Assignee: Lincoln Global, Inc.
    Inventors: Elliott Ash, William Matthews, James E. Hearn
  • Patent number: 9962789
    Abstract: A welding method according to the present invention is a welding method for irradiating an object to be welded including a plurality of metallic plates that are stacked on each other with a high energy beam and performing welding. The welding method includes: forming a plurality of tack weld nuggets along a virtual closed curve on a part to be welded of the object to be welded; and forming a plurality of main weld nuggets so that the main weld nuggets overlap the plurality of respective tack weld nuggets.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: May 8, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei Hisada, Toru Hioki, Shuichi Matsumoto, Kazuyuki Ogusu
  • Patent number: 9833857
    Abstract: The invention relates to a monitoring module (1 . . . 1?) for monitoring an electric arc machining process, the module comprising a camera (2), a photo flash lamp (3) and a control system (4) that controls the photo flash lamp (3) and a control system (4) that controls the photo flash lamp (3) in such a way that it illuminates when the camera (2) records the image. According to the invention, the components (2, 3, 4) are arranged in a common housing (5).
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: December 5, 2017
    Assignee: Fronius International GmbH
    Inventor: Josef Artelsmair
  • Patent number: 9579742
    Abstract: An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece. The welder comprises: a leading electrode driven toward a point in the groove by a first wire feeder operated at a first speed by a first motor with a speed control input and a tachometer derived first feedback signal, a trailing electrode driven toward the same point by a second wire feeder operated at a second speed by a second motor with a speed control input and a tachometer derived second feedback signal, a first power source directing a first current to flow through the leading electrode and a second power source causing a second current to flow through the trailing electrode with the current flow being in a series arc circuit. The second power source being grounded to the workpiece to modify the series arc current so ground current flows to the workpiece whereby the second current is generally equal to the first current minus the ground current.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: February 28, 2017
    Assignee: Lincoln Global, Inc.
    Inventors: Timothy M. O'Donnell, Russell K. Myers
  • Patent number: 9545684
    Abstract: A system and method for automatic detection of a connection of a spool gun to a welding system. In addition to automatically detecting connection of the spool gun, a system and method is provided for controlling the operation of the welding system based on the detection of the spool gun.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: January 17, 2017
    Assignee: ILLINOIS TOOLS WORKS INC.
    Inventors: Jason Dunahoo, Seth Michael Gregory, Craig Steven Knoener
  • Patent number: 9511440
    Abstract: The invention described herein generally pertains to a welding device that deposits a material onto a workpiece, the welding device having with an electrode head and a contact assembly coupled thereto. The contact assembly can house electrodes that allow deposition of material on a workpiece. At least a first set of electrodes and a second set of electrodes can be driven at different speeds. Moreover, welding arcs for one or more electrodes can be established based upon a predetermined order in which the predetermined order can be based on at least one of a location of the electrode head on the workpiece, a start of a welding process, and/or a stopping of a welding process.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: December 6, 2016
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Steven R. Peters, Michael S. Flagg, George C. Willard
  • Patent number: 9415457
    Abstract: An electric arc welder and a method for performing a pulse welding process producing reduced spatter. The welder produces a current between an advancing electrode and a workpiece. The welder includes a short-detecting capability for detecting a short condition upon occurrence of a short circuit between the advancing electrode and the workpiece. The welder may also include a switching module in the welding circuit path of the welder having an electrical switch and a resistive path. Times of occurrence of short intervals can be tracked and a blanking signal can be generated based on the tracked short intervals to anticipate a next short interval in a next pulse period of the pulsed welding process. The blanking signal can be used to reduce a welding current in the welding circuit path by introducing additional resistance into the welding circuit path via the switching module, for example.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: August 16, 2016
    Assignee: Lincoln Global, Inc.
    Inventors: Joseph A. Daniel, Stephen Cole, Steven R. Peters
  • Patent number: 9314866
    Abstract: A system and method is provided for calculating a power output and coordinating the reduction of voltage and wire speed. Specifically, provided is a power circuit for generating welding output power, and a control circuit in communication with the power circuit to modify voltage and wire feed speed based on the calculated welding output power.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 19, 2016
    Assignee: Victor Equipment Company
    Inventors: Roger H. Lambert, Geoffrey H. Putnam
  • Patent number: 9132501
    Abstract: An electric arc welding method is provided, wherein an electrode assembly comprises at least two fusible continuous electrodes acting on a workpiece for generating a weld pool via electric arcs, wherein the at least two electrodes are arranged in sequential order relative to a welding direction and laterally separated relative to each other, wherein steps are performed of monitoring at least one stability parameter (Stab_par) for each electrode of the electrode assembly; determining if one electrode of the electrode assembly violates a stability criterion (Crit); separating at least temporarily the one electrode violating the stability criterion (Crit) from one or more adjacent electrodes when a violation of the stability criterion (Crit) of the one electrode is detected.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: September 15, 2015
    Assignee: ESAB AB
    Inventors: Daniel Lennartsson, Tomas Johansson, Ulf Andrén, Bo Melin
  • Patent number: 9083275
    Abstract: The present invention is concerned with an electronic circuit that is connectable to a voltage source and a load. The circuit comprises a controllable load switch element that is arranged so that a supply voltage provided by the voltage source in a connected state is provided to the load when the load switch element is switched on and is not provided to the load when the load switch element is switched off and a voltage detection circuitry that in the connected state is coupled to the load so as to be energized by the voltage applied to the load. The circuit further comprises a switch-on circuitry that is coupled to the load switch element and is arranged to switch on the load switch element for a determined period of time after a switch arranged between the switch-on circuitry and the voltage source is closed. The proposed circuit allows for using a simple voltage detection circuit that is energized by the voltage to be measured by providing the switch-on circuitry.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: July 14, 2015
    Assignee: Braun GmbH
    Inventors: Joachim Lepper, Ralf Gorlach
  • Patent number: 9000329
    Abstract: A system and method for stabilizing a welding arc is disclosed. The method of initiating the arc includes the steps of defining a wire feed speed based on a user selected wire feed speed and then abruptly reducing the wire feed speed before the wire feed speed reaches a relatively stabilized speed for welding, thereby allowing a welding arc to initiate and propagate to a generally steady state.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: April 7, 2015
    Assignee: Illinois Tool Works Inc.
    Inventors: James Lee Uecker, Robert Raimund Davidson, Charles Lyle Kaufman, Michael Todd Klegin
  • Patent number: 8992226
    Abstract: A mock welding unicoupon for a virtual welding system includes a first exterior surface and a second exterior surface perpendicular to the first exterior surface. The first exterior surface and the second exterior surface together provide a plurality of grooves configured for simulation of a plurality of different types groove welds on the mock welding unicoupon. A curved exterior surface is configured for simulation of a pipe fillet weld on the mock welding unicoupon. A magnet source is configured to generate a magnetic field around the mock welding unicoupon for tracking movements of a mock welding tool with respect to the mock welding unicoupon.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: March 31, 2015
    Assignee: Lincoln Global, Inc.
    Inventors: Jason Leach, Antonius Aditjandra, Deanna Postlethwaite
  • Publication number: 20150076132
    Abstract: An arc welding apparatus includes: a detector configured to detect whether it is in a short state or an arc state between a consumable electrode and a welded article; a feed adjuster configured to apply a forward feed for feeding the consumable electrode when the arc state is detected and apply a reverse feed for feeding the consumable electrode when the short state is detected; a determiner configured to determine whether or not a predetermined period has elapsed after the detector has detected the short state; and an instructor configured to instruct the feed adjuster to continue the reverse feed even when the arc state is detected, until the determiner determines that the predetermined period has elapsed.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 19, 2015
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Masafumi MURAKAMI, Taichi SAKAMOTO
  • Patent number: 8927895
    Abstract: The technology features an apparatus and a method for sensing the length of a lead that connects to a power source to a thermal processing system such as a plasma torch system. Components disposed in the thermal processing system enable the length of the lead to be sensed. In addition, the time for contact starting a thermal processing system enables determination of the length of the lead.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: January 6, 2015
    Assignee: Hypertherm, Inc.
    Inventors: Stephen Theodore Eickhoff, Peter J. Twarog
  • Patent number: 8927901
    Abstract: One embodiment of the present invention relates to a system for buried-arc welding with thru-the-arc seam tracking. Another embodiment of the present invention relates to a method for buried-arc welding with thru-the-arc seam tracking.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: January 6, 2015
    Assignee: Alcoa Inc.
    Inventors: Israel Stol, Floyd Thompson, Richard S. Dulski
  • Patent number: 8901454
    Abstract: In a method for controlling pulse arc welding where an arc is created between a wire and a base material, a pulse waveform different from the pulse waveform for steady-state welding is outputted when a predetermined time has passed since short-circuit welding control was started at arc start, and after a sufficiently large melt pool is formed, the pulse waveform for the steady-state welding is outputted. This reduces the generation of spatters after an arc is created and until the arc is stabilized.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: December 2, 2014
    Assignee: Panasonic Corporation
    Inventors: Akira Nakagawa, Atsuhiro Kawamoto, Junji Fujiwara, Masaru Kowa
  • Patent number: 8895896
    Abstract: An electric arc welding system for depositing weld metal along a groove between two edges of a metal workpiece where the system contains a first power supply and a second power supply, each providing a welding waveform to respective welding electrodes. The positive output terminals of both power supplies are coupled to the same contact tip and the negative output terminal of one of the power supplies is not coupled to the workpiece.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: November 25, 2014
    Assignee: Lincoln Global, Inc.
    Inventors: Timothy M O'Donnell, Stephen R Cole, Alonzo P. O. Yost
  • Patent number: 8890031
    Abstract: A system for controlling a welding operation provides for open-loop control of voltage applied to a wire electrode during an initial arc initiation stage of operation. The voltage may be based upon an operator set voltage. Electrode wire feed speeds may be varied during the same period. The voltage may be changed, but still open-loop controlled after initial contact between the electrode and a workpiece. The control transitions from open-loop to closed loop following the arc initiation stage, which may be a fixed interval or varied based upon various factors. Closed-loop voltage control then ensues, in which voltage may be limited to values based upon the initial open-loop voltage. The voltage may be regulated by control of SCR firing angles, such as by reference to a zero-crossing of an input AC waveform.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: November 18, 2014
    Assignee: Illinois Tool Works Inc.
    Inventors: Bernard J. Vogel, Kenneth A. Stanzel
  • Patent number: 8841581
    Abstract: If a short circuit does not occur during deceleration of a wire feed speed in forward feed of a welding wire before the wire feed speed reaches a predetermined wire feed speed, a cyclic change is stopped and the wire feed speed is constantly controlled at the first feed speed. If a short circuit occurs during forward feed at the first feed speed, deceleration from the first feed speed starts, and the cyclic change is resumed for welding. This achieves uniform weld bead without increasing spatters even if any external disturbance such as change of distance between a tip and base material occurs.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: September 23, 2014
    Assignee: Panasonic Corporation
    Inventors: Atsuhiro Kawamoto, Yasushi Mukai, Junji Fujiwara, Toshiyuki Mishima, Masaru Kowa
  • Publication number: 20140263255
    Abstract: A welding system includes a welding wire feeder, and the welding wire feeder includes a motor and an adjustable drive shaft assembly. The motor is and configured to rotate a feed roll with respect to the wire drive assembly housing. The adjustable drive shaft assembly is coupled to the motor and configured to couple with the feed roll. The adjustable drive shaft assembly includes a drive mechanism configured to urge rotation of the feed roll and to adjust a position of the feed roll relative to the wire drive assembly housing.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Paul William Garvey, Benjamin David Romenesko
  • Publication number: 20140263256
    Abstract: A voltage sensing wire feeder includes a storage device and a user interface. The user interface is configured to receive a first selection and a second selection. The first selection is configured to direct the voltage sensing wire feeder to use a first group of settings stored in the storage device, and the second selection is configured to direct the voltage sensing wire feeder to use a second group of settings stored in the storage device.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: James Francis Rappl, Jeffrey Ray Ihde, Joseph Edward Feldhausen, Timothy Jay Reitmeyer, Thomas Don Lahti, Clay Alan Byron, Michael Hilary Novak
  • Publication number: 20140251971
    Abstract: An electric arc welder including a high speed switching power supply with a controller for creating high frequency current pulses with negative polarity components through the gap between a workpiece and a welding wire advancing toward the workpiece, where the pulses and a background current defining a series of weld cycles. A wave shape generator defines the shape of the pulses and the background current including a controlled ramp up and/or ramp down in each of said cycles, and a circuit to change the shapes of the pulses and/or background current in a repeating pattern in each of the weld cycles, including a negative current in at one of said pulses. The shape change in a cycle can be between first and second shapes or by a rhythmic AC modulation.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: Lincoln Global, Inc.
    Inventors: James E. Hearn, Steven R. Peters
  • Patent number: 8809735
    Abstract: If a short circuit does not occur during deceleration of a wire feed speed in forward feed of a welding wire before the wire feed speed reaches a predetermined wire feed speed, a cyclic change is stopped and the wire feed speed is constantly controlled at the first feed speed. If a short circuit occurs during forward feed at the first feed speed, deceleration from the first feed speed starts, and the cyclic change is resumed for welding. This achieves uniform weld bead without increasing spatters even if any external disturbance such as change of distance between a tip and base material occurs.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: August 19, 2014
    Assignee: Panasonic Corporation
    Inventors: Atsuhiro Kawamoto, Yasushi Mukai, Junji Fujiwara, Toshiyuki Mishima, Masaru Kowa
  • Patent number: 8803033
    Abstract: A semi-automatic brazing apparatus having a brazing wire feeding apparatus containing a brazing wire feed mechanism a controller, and a user input device. The brazing wire from a brazing wire source is continuously drawn from the source through the apparatus via the feeding mechanism and is directed towards a brazing gun for a semi-automatic brazing operation.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: August 12, 2014
    Assignee: Lincoln Global, Inc.
    Inventors: David J. Nangle, Andreu P Meckler, Robert Henson
  • Publication number: 20140203003
    Abstract: Disclosed is a method for controlling arc welding where an arc is generated between a welding wire as a consumable electrode and an object to be welded. The method includes: keeping a wire feed speed at a predetermined constant speed in a steady-state welding period; and at a time point when welding termination is ordered, either switching the wire feed speed from the predetermined constant speed to a wire feed speed at which the welding wire is fed in alternating forward and backward directions, or decreasing the wire feed speed from the predetermined constant speed with time, and then switching the wire feed speed to the wire feed speed at which the welding wire is fed in alternating forward and backward directions at a time point when a predetermined time period has passed since when welding termination was ordered.
    Type: Application
    Filed: March 20, 2014
    Publication date: July 24, 2014
    Applicant: Panasonic Corporation
    Inventors: Junji Fujiwara, Atsuhiro Kawamoto, Masaru Kowa
  • Publication number: 20140202993
    Abstract: A method of welding surface-treated members together using a welding wire includes a step of transferring a droplet detached from the wire to the members and a step of pushing the melt pool in the direction opposite to the direction of welding in such a manner that the gas generated from the members during welding is released from the site of generation. The melt pool is pushed to expose the overlapped region of these members. The gas generated from the members is released to the exposed portion, preventing generation of pores such as blowholes, and also generation of spatters.
    Type: Application
    Filed: March 20, 2014
    Publication date: July 24, 2014
    Applicant: Panasonic Corporation
    Inventors: Atsuhiro Kawamoto, Yasushi Mukai, Junji Fujiwara
  • Publication number: 20140175075
    Abstract: A method and system to determine optimum operating parameters for the startup phase of a welding-type process based on user-desired operating parameters of the post-startup or welding phase of the welding-type process are disclosed. While applicable to a number of welding-type processes, the method and system are particularly configured to determine an optimum wire feed speed for Gas Metal Arc Welding of aluminum using pulse spray transfer.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 26, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Charles L. Kaufman, Michael Todd Klegin, Chris J. Roehl
  • Publication number: 20140151351
    Abstract: A welding system including a fine tuning knob and a coarse adjustment knob for setting a weld wire feed speed are provided. The welding system may include a welder having the coarse adjustment knob and a spool gun having the fine tuning knob. A user may adjust the knob on the welder to set a coarse adjustment wire feed speed and may adjust the knob on the spool gun to fine tune the wire feed speed setting.
    Type: Application
    Filed: October 29, 2013
    Publication date: June 5, 2014
    Applicant: Illinois Tool Works Inc.
    Inventors: John Carmen Granato, JR., Chris John Roehl
  • Patent number: 8704132
    Abstract: In a welding wire storage device for a welding system including a housing with a wire core surrounding the welding wire being arcuately arranged to lie freely in a free space of the housing, one end of the wire core is fixed in an end region of the housing and a measuring means is provided to detect the deflection of the wire core. In order to provide a very simple and compact structure for such a welding wire storage device, the wire core is displaceably mounted in a guide element on the opposite end region, and two coupling mechanisms, for connection with a wire guide hose for the wire core are arranged on the housing.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: April 22, 2014
    Assignee: Fronius International GmbH
    Inventors: Josef Artelsmair, Christian Stumpfl
  • Publication number: 20140097164
    Abstract: A welding wire feeder includes a wire feed drive and wire feed control circuitry coupled to the wire feed drive to control the drive of welding wire towards the welding application. The welding wire feeder includes power conversion circuitry configured to receive input power and to convert the input power to welding output suitable for a welding application, output voltage sensors configured to measure output voltage, output current sensors configured to measure output current, and control circuitry coupled to the power conversion circuitry and to the output voltage and current sensors. The power conversion circuitry includes power storage circuitry configured to store energy and to discharge at least a portion of the stored energy during an overdraw event. The control circuitry is configured to control the output current during the overdraw event to maintain a stored energy value of the power storage circuitry greater than a desired minimum energy value.
    Type: Application
    Filed: December 10, 2013
    Publication date: April 10, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventor: Edward G. Beistle
  • Patent number: 8686318
    Abstract: A welding-type device has a wireless communication unit to transmit wireless signals comprising at least identification information or location information. The information may be transmitted either automatically or in response to request signals. Such a welding-type device may be configured to communicate with other welding-type devices, a monitoring device, or both. A wireless communication system has at least one welding-type device, at least one wireless communication assembly, and at least one monitoring device and is capable of assisting a user in locating particular welding-type devices, monitoring inventory, preventing theft of welding-type devices, and scheduling preventive maintenance.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: April 1, 2014
    Assignee: Illinois Tool Works Inc.
    Inventors: Bruce Albrecht, Darryl Grant Harvey, Sundaram Nagarajan, James F. Ulrich
  • Publication number: 20140061176
    Abstract: A welding system is disclosed in which the rate of advancement of wire electrode is determined automatically. The device can include a control circuit that determines the rate of advancement of the wire electrode in response to a signal from the voltage selection device of the welding system. Depending upon the operator selected voltage which is selected via the voltage selection device, the control circuit will determine the appropriate rate of wire electrode advancement and control the advancement mechanism (e.g., electric motor) accordingly. Linking of the voltage level and wire-feed speed controls facilities easy of use for more novice operators and, furthermore, facilitates single-handed adjustment of two operational parameters during a welding process.
    Type: Application
    Filed: November 8, 2013
    Publication date: March 6, 2014
    Applicant: Illinois Tool Works Inc.
    Inventors: Kenneth A. Stanzel, Bernard J. Vogel, Chris Roehl, Kelley Morrow
  • Patent number: 8664568
    Abstract: An arc welding control method carries out weld with a welding current and a welding speed different from those at a steady welding period according to intrinsic resistivity of a weld wire or a base material at a welding start period and a welding end period, so as to obtain a satisfactory welding quality.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: March 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Junji Fujiwara, Atsuhiro Kawamoto, Akira Nakagawa
  • Patent number: 8658942
    Abstract: A method and system to determine optimum operating parameters for the startup phase of a welding-type process based on user-desired operating parameters of the post-startup or welding phase of the welding-type process are disclosed. While applicable to a number of welding-type processes, the method and system are particularly configured to determine an optimum wire feed speed for Gas Metal Arc Welding of aluminum using pulse spray transfer.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: February 25, 2014
    Assignee: Illinois Tool Works Inc.
    Inventors: Charles L. Kaufman, Michael T. Klegin, Chris J. Roehl
  • Patent number: 8629373
    Abstract: A welding system, in certain embodiments, includes a synchronization controller configured to override a first nominal calibration of a first wire drive, or a second nominal calibration of a second wire drive, or both, in response to a tension condition or a compression condition of a welding wire feeding between the first and second wire drives. A welding system, in other embodiments, includes a welding wire drive having a motor, a controller, a nominal calibration, and a multi-drive synchronization parameter. The multi-drive synchronization parameter may be configured to control speed, or torque, or both, of multiple drives including the welding wire drive to facilitate synchronization of the multiple drives.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: January 14, 2014
    Assignee: Illinois Tool Works Inc.
    Inventors: Charles L. Kaufman, Brandon J. Speilman
  • Publication number: 20140001169
    Abstract: Systems and methods of communicating between a welding power source and a welding wire feeder to improve the operation of a welding system. Two-way communication between a welding power source and a welding wire feeder is provided either wirelessly or over the welding output cable. The communication between the welding power source and the welding wire feeder facilitates output voltage selection at the welding wire feeder as well as the entering of a lower output power state of the welding power source when not welding.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 2, 2014
    Applicant: LINCOLN GLOBAL, INC.
    Inventors: Edward A. Enyedy, William Delvon Wilder, William T. Matthews, Bruce John Chantry
  • Publication number: 20130327751
    Abstract: A welding wire feeder includes a welding wire feed drive configured to drive welding wire towards a welding application, wire feed control circuitry coupled to and configured to control the welding wire feed drive. The welding wire feeder includes power conversion circuitry configured to receive polarized input power from a welding power source via input connections with defined polarities and to convert the polarized input power to welding output, sensing circuitry configured to detect the polarity of the polarized input power when connected to the input connections, and welding process control circuitry. The welding process control circuitry is coupled to the power conversion circuitry and the sensing circuitry. The welding process control circuitry is configured to provide the polarized input power to the power conversion circuitry only if the polarity of the polarized input power corresponds to the defined polarities of the input connections.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 12, 2013
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Anthony Van Bergen Salsich, Edward G. Beistle
  • Publication number: 20130327754
    Abstract: A method of operating a welding wire feeder includes receiving an input power from a welding power source, actuating a power relay to close and open a first current carrying path for application of the input power, and actuating bypass circuitry coupled in parallel to the power relay to close and open a second current carrying path in coordination with actuating the power relay. The method of operating the welding wire feeder also includes providing a welding wire to a welding torch.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 12, 2013
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Anthony Van Bergen Salsich, Brian Lee Ott, Edward G. Beistle
  • Publication number: 20130327753
    Abstract: A welding wire feeder includes a welding wire feed drive configured to drive welding wire towards a welding application and wire feed control circuitry coupled to the welding wire feed drive. The wire feed control circuitry is also configured to control the drive of welding wire towards the welding application. The welding wire feeder also includes power conversion circuitry and welding process control circuitry coupled to the power conversion circuitry. The power conversion circuitry is configured to receive input power from a welding power source and to convert the input power to controlled waveform welding output. The welding process control circuitry is configured to provide control signals for conversion of the input power to the controlled waveform welding output. The welding wire feeder also includes a process operator interface coupled to the welding process control circuitry and configured to permit operator selection of a controlled waveform welding process.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 12, 2013
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Michael William Roth, Joseph Robert Ryan, Anthony Van Bergen Salsich, Markus Michael Dantinne, Brian James Veik
  • Publication number: 20130327752
    Abstract: A method of operating a welding wire feeder includes receiving an input power signal from a power source and converting the input power signal to a bus power signal on an internal bus at a first time with a boost converter. The method also includes detecting bus voltage and bus current of the bus power signal on the internal bus and converting the bus power signal to a welding output signal at a second time with a buck converter. The welding output signal is suitable for a controlled waveform welding process. The method also includes detecting output voltage and output current of the weld output, and reducing a voltage ripple on the internal bus based at least in part on the detected bus and output current and/or voltages.
    Type: Application
    Filed: March 15, 2013
    Publication date: December 12, 2013
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Anthony Van Bergen Salsich, Edward G. Beistle
  • Patent number: 8604389
    Abstract: A welding system is disclosed in which the rate of advancement of wire electrode is determined automatically. The device can include a control circuit that determines the rate of advancement of the wire electrode in response to a signal from the voltage selection device of the welding system. Depending upon the operator selected voltage which is selected via the voltage selection device, the control circuit will determine the appropriate rate of wire electrode advancement and control the advancement mechanism (e.g., electric motor) accordingly. Linking of the voltage level and wire-feed speed controls facilities easy of use for more novice operators and, furthermore, facilitates single-handed adjustment of two operational parameters during a welding process.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: December 10, 2013
    Assignee: Illinois Tool Works Inc.
    Inventors: Kenneth A. Stanzel, Bernard J. Vogel, Chris Roehl, Kelley Morrow
  • Patent number: 8581146
    Abstract: An apparatus and method for feeding welding wire, where the apparatus contains a wire feeding device which pays out a wire and a power source which provides a current and voltage to the wire while it is being paid out. The apparatus further includes a detection circuit which detects a short circuit in the wire when the wire makes contact with a work piece or the like, and upon detection of the short circuit the wire feeding device stops feeding the wire so that a desired stick out distance is achieved.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: November 12, 2013
    Assignee: Lincoln Global, Inc.
    Inventor: Joseph A Daniel
  • Patent number: 8569654
    Abstract: A welding system including a fine tuning knob and a coarse adjustment knob for setting a weld wire feed speed are provided. The welding system may include a welder having the coarse adjustment knob and a spool gun having the fine tuning knob. A user may adjust the knob on the welder to set a coarse adjustment wire feed speed and may adjust the knob on the spool gun to fine tune the wire feed speed setting.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: October 29, 2013
    Assignee: Illinois Tool Works Inc.
    Inventors: John Carmen Granato, Jr., Chris John Roehl
  • Patent number: 8546728
    Abstract: A welding-type component is disclosed having a single user input that requires a user to input only a single parameter to identify a welding-type process. From the single input, operating parameters for the welding-type process automatically are set or otherwise determined. The invention streamlines the welding-type process prescription process by allowing a user to input only a single parameter than can be used to determine and coordinate other parameters for the welding-type process.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: October 1, 2013
    Assignee: Illinois Tool Works Inc.
    Inventor: Darrell L. Sickels
  • Patent number: 8536487
    Abstract: A consumable electrode type arc welding method for generating arc between a plate-shaped work and a welding wire by a mixed shield gas including argon gas to weld the plate-shaped work, includes: making a state of reverse polarity in which the polarity of the welding wire is positive at the welding start time, and switching at least once to a state of positive polarity in which the polarity of the welding wire is negative.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: September 17, 2013
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Seigo Nishikawa, Kanji Katada, Hirotaka Adachi, Tsuneo Shinada, Hideyasu Machii
  • Patent number: 8513568
    Abstract: If a short circuit does not occur during deceleration of a wire feed speed in forward feed of a welding wire before the wire feed speed reaches a predetermined wire feed speed, a cyclic change is stopped and the wire feed speed is constantly controlled at the first feed speed. If a short circuit occurs during forward feed at the first feed speed, deceleration from the first feed speed starts, and the cyclic change is resumed for welding. This achieves uniform weld bead without increasing spatters even if any external disturbance such as change of distance between a tip and base material occurs.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: August 20, 2013
    Assignee: Panasonic Corporation
    Inventors: Atsuhiro Kawamoto, Yasushi Mukai, Junji Fujiwara, Toshiyuki Mishima, Masaru Kowa
  • Publication number: 20130161302
    Abstract: A method of automatically setting a welding parameter for MIG/MAG welding including the following steps:—initiating (S1) a parameter setting welding operation;—measuring (S12) a welding voltage and retrieving (S13) a parameter representing a wire feed speed during said parameter setting welding operation; and—identifying (S14) a second function mapping said welding current to said welding voltage from said measured welding voltage and said retrieved parameter.
    Type: Application
    Filed: June 14, 2010
    Publication date: June 27, 2013
    Applicant: ESAB AB
    Inventor: Per Aberg
  • Publication number: 20130146575
    Abstract: A method providing a welding apparatus configured to supply a welding wire to a welding gun and a welding system implementing the same is described. The welding gun has a trigger and an opening where the welding wire extends when the trigger is activated. The method also has a computer with a user interface that includes an automatic wire retract program, the program dynamically adjusting the amount of welding wire retraction based at least upon one of the following: welding arc current, welding wire size, welding wire speed and burnback time. The program monitors the welding gun and determines when the trigger is disabled. The program indicates when a first condition is satisfied and retracts the welding wire so the welding wire preferably does not extend (or minimally extends—or may be at least partially recessed within the tip) from the opening of the welding gun nozzle tip.
    Type: Application
    Filed: February 6, 2013
    Publication date: June 13, 2013
    Applicant: LINCOLN GLOBAL, INC.
    Inventor: Lincoln Global, Inc.