1534 results about "Welding power supply" patented technology

A weld recording system mounted in or on a welding helmet is provided. The weld recording system includes a camera assembly unit, a power supply unit, a processor, and removable memory. The weld recording system interfaces with lens control circuitry, an optical sensor, a welding power supply, and a helmet position sensor. Logic is provided for the triggering and recording of video and audio signals, which are eventually stored in a file for future reference. Transmission of signals from one or more welders to a monitoring station for eventual display is presented. An image processing algorithm is provided to combine multiple images with varied exposure times into a visual image of the weld and its surroundings.

In a welding power supply for creating welding current in a succession of current pulses with a maximum current level and a trailing off state which current pulses passing through a series circuit including an inductor and electrode in welding relationship with a workpiece wherein the power supply has (a) an inverter stage with an input to be connected to a power source, a first terminal at a first electrical polarity when the inverter is on, a second terminal at a second electrical polarity when the inverter is on, and a control to generate an off signal to turn the inverter off and remove current from the terminals to shift said current pulse toward an off state; and, (b) a power switching stage including a transistor based switch having a conduction condition passing current from the first terminal upon creation of a first logic signal and a non-conduction condition blocking current upon creation of a second logic signal, the improvement comprising: a sensor for measuring the instantaneous value of the welding current, a comparator for producing a low current signal when the instantaneous current is at a selected value substantially below the maximum current level and a circuit or program for creating the second logic signal upon production of a low current signal after generation of an off signal whereby the transistor based switch is switched from the conduction condition to the non-conduction condition when the welding current is generally at the selected value.

A method controls a welding apparatus by using a neural network to recognize an acceptable weld signature. The neural network recognizes a pattern presented by the instantaneous weld signature, and modifies the instantaneous weld signature when the pattern is not acceptable. The method measures a welding voltage, current, and wire feed speed (WFS), and trains the neural network using the instantaneous weld signature when the instantaneous weld signature is different from each of the different training weld signatures. A welding apparatus for controlling a welding process includes a welding gun, a power supply for supplying a welding voltage and current, and a sensor for detecting values of a plurality of different welding process variables. A controller of the apparatus has a neural network for receiving the welding process variables and for recognizing a pattern in the weld signature. The controller modifies the weld signature when the pattern is not recognized.

The present invention is directed to a system and method of remotely controlling a welding machine with command signals transmitted to the welding power source across a weld cable connecting the power source to a remote device, such a wire feeder. A transmitter transmits the control commands containing desired welding operational parameters to a receiver disposed in the power source across a weld cable also designed to carry welding power from the power source to the wire feeder.

The present invention is directed to a system and method of remotely controlling a welding machine with command signals transmitted to the welding power source across a weld cable connecting the power source to a remote device, such a wire feeder. A transmitter transmits the control commands containing desired welding operational parameters to a receiver disposed in the power source across a weld cable also designed to carry welding power from the power source to the wire feeder.

A welding power supply including power conversion circuitry adapted to receive a primary source of power, to utilize one or more power semiconductor switches to chop the primary source of power, and to convert the chopped power to a welding output is provided. The provided welding power supply includes a pulse width modulated (PWM) digital controller including gate drive circuitry that generates a PWM output signal that controls the switching of the one or more power semiconductor switches. The PWM output signal includes a duty cycle term corrected for one or more sources of error in the welding system.

Embodiments of a pendant associated with a multi-process welding power supply that allows a user to switch processes and reverse an output polarity while located remotely from a power supply unit are provided. Certain embodiments include a pendant with a wire spool and wire feeder drive circuitry that is configured to activate spooling during MIG welding. Control circuitry that may include processing circuitry and memory is provided. The control system may disable redundant controls on the power supply unit user interface when the power supply unit is connected to the pendant via a supply cable. Additionally, the control system may set the process, set the polarity, enable or disable a wire feed, and enable or disable gas flow according to inputs received via a user interface on either the power supply unit or the pendant.

Various welding systems that provide communication over auxiliary or weld power lines are provided. The disclosed embodiments may include a multi-process welding power supply that is communicatively coupled to a pendant via an auxiliary conduit that facilitates the exchange of data and power between components of the welding system. In some embodiments, the pendant may also include auxiliary outlets that allow an operator to power auxiliary devices at the weld location. The disclosed embodiments further include a pendant with a wire spool and wire feeder drive circuitry that is configured to activate spooling during MIG welding. Embodiments are provided that also allow for bidirectional data communication over a power line in networked welding systems.

A modular direct current power source is provided. One welding power supply system includes a plurality of hysteretic buck converters coupled in parallel. The hysteretic buck converters are configured to receive a common input and to provide combined output power to a common load based upon the common input.

A welding power supply includes a user interface that allows the operator to adjust one or more welding parameters comprising a welding sequence for a welding process. The user interface may include a display, which may be a graphical display depicting the welding sequence and the one or more welding parameters. The user interface may further dynamically depict a pictograph, icon or other graphical image showing how changes to the one or more welding parameters will affect the welding process, which in an exemplary manner may be the welding bead profile and/or the welding arc profile.

A welding system including a welding power source, a receiver, and a wireless control device are provided. The receiver is adapted to communicate information to and from the welding power source. The wireless control device and/or the receiver is adapted to learn a first address specific to the receiver and the wireless control device pair to exclusively bind the welding power source to the wireless control device during a learning mode. Such a binding may occur when the wireless control device is located a distance from the welding power source that is below a preset threshold. The wireless control device controls operation of the welding power source when the wireless control device is bound to the welding power source.

The invention discloses a swing arc-based multi-layer and multi-channel weld tracking system and an identification method thereof. The weld tracking system comprises a welding gun, a welding power supply, a wire feeder, a welding tractor, a swinger, a driver, a hall current sensor, a main carriage and the like, wherein the welding gun is used for performing oscillatory scanning on a weld groove when driven by the swinger in the welding process, the change of relative positions between the welding gun and a workpiece directly causes the change of arc length, and the change of the arc length causes the change of arc parameters such as arc current, arc voltage and the like; the hall current sensor is used for sending detected welding current signals and positioning pulse signals to the controller, automatically judging the weld shape according to certain operation rules, processing the weld shape by selecting corresponding weld deviation signal extraction schemes and acquiring weld deviation information; and the swinger is used for regulating weld deviation, automatically tracking welds and completing automatic welding.

A welding system having a welding power supply coupled to a fume extractor is provided. The fume extractor may be coupled to control circuitry configured to operate the welding power supply. The control circuitry may be configured to begin, terminate or modify the operation of the fume extractor prior to the establishment of a welding arc, after the termination of the welding arc, or both. The control circuitry may be further configured to modify the operation of the fume extractor based upon a type of welding process used.

Embodiments of a welding power supply include an engine adapted to drive a generator to produce a first power and a energy storage device adapted to discharge energy to produce a second power. The welding power supply also includes control circuitry adapted to detect a commanded output. The control circuitry is adapted to meet the commanded output by controlling access to power from the energy storage device to produce the second power when the commanded output is below a first predetermined load level. The control circuitry is further adapted to meet the commanded output by controlling access to power from the engine and the energy storage device to produce the first power and the second power when the commanded output is above a second predetermined load level.

The present disclosure is directed to a power system component for a work machine. The power system component may include a wheel having one or more free-form welded members. The wheel may include a front end, a back end, and a central, axial spine member extending from the front end to the back end. The wheel may also include an outer shell adjacent the spine member at the front end, extending toward the back end, and flaring radially away from the spine member near the back end. The outer shell may include a front surface, a back surface, and one or more protrusions extending from the front surface. The wheel may further include at least one void defined between the spine member and the back surface of the outer shell and at least one reinforcing structure connecting the outer shell with a portion of the spine member between the front end and the back end.

The present invention is directed to a remotely controlled welding machine. A remote control uses the welding circuit to transfer information to a welding power source. The information to be communicated to the power source includes welding power source output command information (amperage/voltage control), welding circuit on/off information (power source output contactor control), and power source mode control (constant voltage/constant current). A transmitter transmits the desired welding operational parameters to a receiver disposed in the power source. The transmitter is constructed to use only a small amount of power which, preferably, is supplied by one or two low voltage replaceable and/or rechargeable batteries. Additionally, an open circuit voltage is not created between the power source and an electrode holder when an arc is not present.

An external control module is provided for interfacing a welding power supply with a wire feeder. The welding power supply is designed to exchange control signals, feedback signals, and so forth over a control cable when coupled to a standard wire feeder. However, the external control module allows the power supply to be used with a wire feeder that is designed to exchange data combined in a single cable with welding power. The module is coupled to welding and workpiece cables from the power supply, and to a control cable, such as from a multipin connector on the power supply. The module is further coupled to the wire feeder via a welding cable. The module combines data with welding power for transmission to the wire feeder, and extracts data from welding power for application to the power supply.