928results about "Electrode supporting devices" patented technology

A welding tool includes a first handle and a second handle. The welding tool also includes a torch nozzle holder configured to hold a nozzle of a welding torch therein, and to block the nozzle from extending therethrough. The welding tool includes a blade assembly positioned a predetermined distance from the torch nozzle holder. The blade assembly is configured to cut welding wire extending through the blade assembly to calibrate wire stickout from the welding torch to the predetermined distance.

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.

Welding electrodes with a welding face for contact with a metal surface for electrical resistance welding are provided with concentric contoured rings formed into the face. The rings may, for example, be ridges upstanding in the face or grooves depressed into the face. The contoured rings may be radially spaced with relatively flat (depending on the curvature of the face) intervening rings. When the electrode is pressed into contact with the surface of the workpiece for delivery of a welding current, the features of the concentric rings penetrate surface oxides or other conductivity barriers. When ongoing welding operations have eroded the contoured rings they may be rapidly reformed in the weld face in a surface re-dressing operation.

A hand held electrode holder has a power on/off switch on the handle of the electrode holder and a trigger to open the clamping jaws that clamp the electrode. The holder has internal parts which operate such that the trigger cannot open the clamping jaws while the switch is in the power on position thereby reducing the possibility of an electric hazard when changing electrodes.

A portable wire feeder system is disclosed that includes multiple wire supplies disposed in a case or luggage. The system has a number of embodiments each including multiple wire sources and at least one wire feeder disposed in the case. In a one embodiment multiple wire supplies and a wire feeder are mounted in a fixed position, and are configured to enable feeding of the wire from either supply to the wire feeder. In other embodiments, either the wire supplies or the wire feeder moves to align the wire supply with the wire feeder. In another embodiment, a wire guide is disposed between the wire feeder and wire supplies. In another embodiment, a second wire feeder is disposed within the case and is configured to align with a second wire supply while the first wire feeder is aligned with the first wire supply.

A retaining head for a MIG welding device includes a contact tip mounting end, an opposite retaining head mounting end, and a throughbore extending from one of the ends to the other end. A deflector is disposed along the throughbore and is adjustable for imparting a bend in welding wire passing through the throughbore. The deflector provides a straight wire contour for the welding wire that is fed out of the welding torch, while maintaining sufficient contact force between the welding wire and the contact tip. The deflector also reduces the effect of wire twist on the contact point between the welding wire and the contact tip.

A modular welding wire feed drive for use in a welding system. The welding wire feed drive is designed to be detachably connected to the welding wire feed system of the welding system. The welding wire feed drive includes a drive housing designed to be detachably connectable to the welding wire feed system, a wire contact arrangement designed to controllably feed welding wire through the welding wire feed drive, and a drive motor that is connected to or interconnected to the wire contact arrangement to at least partially drive the wire contact arrangement.

A coated welding tip and nozzle assembly is disclosed. The tip and the nozzle are coated with a coating composition comprising titanium dioxide. The coating provides resistance to adhesion and accumulation of weld spatter on the nozzle and tip and facilitates weld spatter removal. The coating also protects against thermal damage of the nozzle by providing a thermal barrier.

A securement member for securing a contact tip to a welding torch assembly is provided. A channel extends axially therethrough and has an internal shoulder that extends into this channel. This internal shoulder abuts against a shoulder on the contact tip, capturing the contact tip between the shoulder and a seating surface on the diffuser and securing the contact tip in the torch assembly. The contact tip is securely seated without threading engagement, facilitating quick release and installation. The exemplary securement member couples to the diffuser such that the egress of fluid from the diffuser is blocked when used for gasless welding. This blocking allows a user to leave the diffuser secured to the welding torch when a gasless electrode is in use.

The invention relates to a method for repairing a crack and a chipping a shunt ring of a case, which comprises the following steps of: (1) trimming and polishing the chipping part of the shunt ring to form a square or oblong notch by using an air drill and a grinding wheel; (2) performing dyeing inspection on the periphery of the polished notch, and determining as qualified if no crack exists; (3) taking a patch material from the corresponding portion of a discarded case by using a linear cutting method, trimming the patch material by using the grinding wheel according to the shape of the notch so that the trimmed patch is matched with the notch; (4) placing the trimmed patch in the notch, supporting the patch with a support frame, firstly performing positioning welding on the patch by using low current argon arc welding, and then performing sectional symmetry welding; (5) performing dyeing inspection on the welding portion, and determining as qualified if no crack or eyehole exists; and (6) eliminating welding stress by ultrasonic waves. The repairing method provided by the invention has the advantages of low equipment investment, low repairing expense and short repairing period.

Welding gun with double conductor composed by a torch body (1) and electronic scales (2) to measure the intensity of the sensors (6) located in each conductor (3) and with mechanisms to trigger an alarm when there is an imbalance of the intensities circulating through both conductors. To this end, a microcontroller (5) connected to intensity (6) and temperature (8) sensors in the conductors is used, with indicators of failure or anomaly. The microcontroller (5) program calculates the difference between the magnitudes of both intensity signals and determines which of the two is higher, and, based on predefined parameters, triggers the corresponding alarm signal.

A welding wire for use in electric arc welding and method of making same, wherein the wire has an effective outer diameter and comprises a length of solid metal formed into a series of distinct segments each having a selected volume and having an indented and non-indented region with the cross sectional area of the solid metal at said non-indented region being greater than the cross sectional area of the solid metal at the indented region.

A weld joint automatic tracking control method and system based on magnetic controlling arcs and laser vision sensing mainly solves the technical problem that an existing space weld joint is low in automatic real-time tracking accuracy, not good in system fault tolerance and the like. According to the key points of the technical scheme, all deviation information, obtained by a magnetic controlling arc sensor (10) and a laser vision sensor (11), of the butt welded seam center of a welding gun (1) is input to a tracking system central control unit (8), information processing is conducted through a double-sensing estimating, examining and correcting fusion method, infused deviation information is taken as weld joint deviation regulating amount of an executing mechanism, the executing mechanism executes weld joint deviation regulating, weld joint automatic tracking is achieved, and the automated welding is completed. The weld joint automatic following control method and system is mainly used for weld joint automatic tracking.

A contact tip for a welding torch is provided. In one embodiment, the contact tip includes a body formed of an electrically conductive material and a non-linear passage that extends through the body. The non-linear passage of this embodiment is configured to receive a wire electrode and to facilitate electrical communication between the body and the wire electrode. Various contact tip assemblies and manufacturing techniques for forming contact tips are also provided.

A consumable electrode arc-welding machine comprising an arc resistance calculating part that calculates an arc resistance from a welding current and a welding voltage to develop an arc resistance signal, wherein the welding current and welding voltage are controlled by a short-circuit waveform control signal and an arc waveform control signal that vary in accordance with the arc resistance signal. In this way, the spatter control and the arc stability can be achieved. During an arc period, if the arc resistance signal exhibits a level greater than a predetermined level for a predetermined period, a constant current control signal is developed to perform a constant current control of the welding current by use of a predetermined current value that is higher than the current value developed during the development of the arc waveform control signal, thereby preventing the arc from going off.

A method of forming a sputtering target assembly and other metal articles is described. Sputtering target assemblies and metal articles are also described. The method includes bonding a sputter target to a backing plate using resistance heating or welding to bond assembly members that respectively include mating projections and grooves formed in bonding surfaces thereof.

A gripping device is disclosed for a set of pinch rollers used in a wire feeder that supplies a welding operation with a consumable welding wire. The welding wire passes between the pinch rollers whereby the pinch rollers engage the wire with a gripping force and incrementally rotate to control the outflow of the wire to the welding operation. The gripping device has a first member which is displaceable relative to a second member and a spring mechanism extending between the first and second members which has at least a first and a second spring modulus. The spring mechanism produces the gripping force as the first and the second members are displaced toward one another. The gripper urges one roller of the set of pinch rollers toward the other roller of the set to engage the wire and to apply the gripping force. By including a spring with a first and second spring modulus, the gripper can apply a first range of gripping forces with the force produced by the first spring modulus and a second range of gripping forces with the force produced by the second spring modulus.

A welding system, in certain embodiments, includes a torch having a neck with an arcuate portion, and a resilient jump liner disposed in the neck and extending through the arcuate portion. The resilient jump liner includes a pathway having a curvature configured to bend a welding wire passing through the pathway. The system also includes an annular support disposed about the resilient jump liner inside the neck, wherein the annular support is configured to at least substantially fix the curvature to force the welding wire to achieve a wire curvature. The system also includes a contact tip coupled to the neck, wherein the wire curvature is configured to bias the welding wire into substantially consistent contact with an interior pathway through the contact tip.

A material processing system includes a power supply and a wire feeder to feed a wire electrode for a material processing operation. The enthalpy and/or temperature of a region of the tip of the electrode is maintained substantially constant via closed loop control. The control may be based upon regulation of current applied to the electrode. The control of the current may be based upon an electrode extension error. Wire feed speed may also be controlled to assist in maintaining a substantially constant enthalpy and/or temperature near the electrode tip.

A method and system are provided for a trackless autonomous crawling all-position arc welding robot with wheels and permanent magnet caterpillar belts. A sensor detects a welding seam position and transmits the position to a tracking controller. The tracking controller sends instructions to a welding torch which may be moved in generally horizontal and vertical directions based upon the instructions. Additionally, a crawler drive controller receives the welding seam position and sends a control signal to an AC servomotor drive that positions the crawler based on the control signal.

A method for bonding airfoil sections includes aligning upper and stub airfoil sections having upper airfoil pressure and suction sides and stub airfoil pressure and suction sides respectively, pressing together upper and stub airfoil cross sections at upper and stub airfoil distal ends of the upper and stub airfoil sections respectively, and then resistance welding, preferably solid state resistance welding, the upper and stub airfoil sections together along the upper and stub airfoil cross sections by passing electrical current across the upper and stub airfoil cross sections. The upper and stub airfoil sections may be clamped between pressure and suction side upper airfoil electrodes and between the stub airfoil pressure and suction sides respectively. The method may be performed while the stub airfoil section is attached to an airfoil carrier such as a rotor disk rim, a gas turbine engine drum, or a gas turbine engine blade platform.

Provided herein are systems including a wire spool having a core with a core diameter and wire wound around the core and having a wire diameter. An outer diameter of the wire spool is defined by a sum of the core diameter and the wire diameter. The systems may also include a sensing system having a sensor component disposed on the wire spool and/or a wire spool hub. The sensing system is adapted to acquire data corresponding to a parameter indicative of the outer diameter of the wire spool.

Several aspects of an in-line welding gun are disclosed. In one aspect, the welding gun has a variable profile insulating boot disposed over the torch barrel of the gun. The variable profile insulating boot may be comprised of a molded material having varying thickness to provide the desired insulating properties. In another aspect of the welding gun, a speed control mechanism for the motor driving the wire feed assembly is positioned in a recess in the housing such that it reduces the risk of being unintentionally adjusted during operation of the welding gun. In another aspect of the welding gun, the wire feed mechanism features a feeder roller and an idler roller that may be separated without opening the housing of the welding gun. To separate the rollers, the user may depress a portion on the exterior of the housing to press on a pivotable lever on which the idler roller is disposed.

The invention discloses an automatic welding platform for double annular welding seams and a welding process. The automatic welding platform consists of a mechanical part and a control system and comprises a bed body (1), a program control system (8) and an operation box (9), wherein a modification mechanism (2) and a pneumatic feeding and discharging platform (5) are adjacent to each other and are arranged in front of the bed body (1) by a bolt respectively; a pneumatic clamp (3) is arranged on the modification mechanism (2); and the clamping station of the pneumatic clamp (3) is opposite to the feeding station of the pneumatic feeding and discharging platform (5). Two sets of welding gun control mechanisms (15 and 16) are arranged at two directions different from the modification mechanism (2) and are connected with the bed body (1); and the modification mechanism (2), the pneumatic clamp (3) and two welding guns on the two sets of welding gun control mechanisms (15 and 16) form the welding stations of double annular welding seams respectively. In the welding process, the welding current parameter of each gun can be regulated by the program respectively; and a controller can adjust the speed to display the welding power source of each part, and controls each part to be isolated from one another completely, and the reliability is high.

A portable welding wire feeder including a plastic instrument case having a base and a lid which are injection molded; the lid defining an interior cavity and the base defining an interior base cavity, a chassis mounted in the base cavity and adapted to support a spool of weld wire, a wire feeder mounted within the base and adapted to feed wire from the spool to an exterior of the instrument case; and a tool box shaped to conform to the interior of the lid and reside therein.

A weld stability system for an arc welding apparatus and method of operation is disclosed. The weld stability system may comprise a shielding gas supply and a control assembly. The shielding gas supply may include a first source of gas, a second source of gas, a mixing chamber, a first valve selectively connecting the first source of gas to the mixing chamber, a second valve selectively connecting the second source of gas to the mixing chamber, and a shielding gas supply line configured to direct gas from the mixing chamber to a weld gun. The control assembly may include a controller operatively engaging the first and second valves, and at least one sensor configured to monitor a parameter of an arc welding process and communicate with the controller.

The present invention discloses one kind of stud welding gun with force measuring sensor and its welding process. During welding and after the stud moves to contact with the workpiece, the contact force is transmitted through the resistance strain gage in the pressure sensor, which is connected be the rotating mechanism of the welding gun and the stud fixture, to the data acquiring card of the control computer. After the detected contact force reaches the set value, the welding current to the stud fixture is turned on, the motion controller connected electrically to the motor makes the motor rotate reversely and the stud is raised for ignite electric arc. During welding feed, the welding current is first turned off, the motion controller drives the motor to rotate and the stud is fed to the workpiece; and after the detected feeding pressure of the stud to the workpiece reaches the set value, the motor is stopped.

Welding conditions are set for a power supply apparatus for use with a welding machine, using a control panel unit (96). A memory (105) stores therein welding conditions as set through the control unit (96), and holds the set welding conditions after turning off of a main power supply switch (1) of the power supply apparatus. Upon turning on of the main power switch (1) for starting welding, the welding conditions stored and held in the memory (105) are read out and set in the power supply apparatus.

The invention relates to the technical field of automatic welding, in particular to a welding oscillator with a seam tracking function. The welding oscillator comprises a welding oscillator and a seam tracking sensor; the welding oscillator comprises a welding gun straight oscillating device, a welding gun pitch angle device and a welding gun pendulum device; and the welding gun pitch angle device is installed at the front end of the welding gun straight oscillating device. The welding oscillator has the advantages that the structure is reasonable and compact, and the welding oscillator is convenient to use; torque output by a transverse driving motor is transmitted through a connecting screw, so that the horizontal movement adjustment of a welding gun is realized; a longitudinal driving motor adjusts the pitch angle of the welding gun through chain transmission; the pendulum movement of the welding gun can be realized through the positive and negative rotation of a rotary driving motor; the movement range of the welding gun is increased, and the welding oscillator has high practicability; and simultaneously double I-shaped lasers perform seam tracking and camera imaging, the welding gun can be monitored remotely, the welding process can be realized through seam tracking, the welding oscillator has high stability, and the welding quality and the welding efficiency are improved.

A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy (“aluminum”) workpiece together includes several steps. One step involves providing a workpiece stack-up with a steel workpiece and an aluminum workpiece. Another step involves attaching a cover over a weld face of a welding electrode. The cover is made of a metal material with an electrical resistivity that is greater than an electrical resistivity of a material of the welding electrode. Yet another step involves performing multiple individual resistance spot welds to the workpiece stack-up. The cover abuts the aluminum workpiece while the individual resistance spot welds are performed. And another step involves removing the cover from the welding electrode after the individual spot welds are performed.