There is provided an arc welding control method of performing a forward/reverse feeding control of alternating a feeding rate of a welding wire between a forward feeding period and a reverse feeding period, and generating short-circuiting periods and arc periods to perform welding. The welding wire is fed forwardly at a time of staring the welding. The forward/reverse feeding control is started from the reverse feeding period of the welding wire after starting conduction of a welding current.

There is provided an arc welding control method of performing a forward/reverse feeding control of alternating a feeding rate of a welding wire between a forward feeding period and a reverse feeding period, and generating short-circuiting periods and arc periods to perform welding. The welding wire is fed forwardly at a time of staring the welding. The forward/reverse feeding control is started from the reverse feeding period of the welding wire after starting conduction of a welding current.

A welding rod dispenser comprising: a deck, where the deck angles downward from back to front; a rotating assembly located at the front of the deck, where the rotating assembly comprises grabber teeth; and a leveler assembly located atop the deck. Welding rods placed atop the deck may tend to slide forward under the leveler assembly where the leveler assembly levels them into a single layer. Individual welding rods may then be grabbed by the grabber teeth one at a time before being moved forward by the rotating assembly for retrieval by the user.

A contact tip assembly having an electric contact unit containing a contact tip with an electric energy source, where the electric contact unit is positioned at a distance away from the outlet opening of a guide.

In one embodiment, a welding system having a welding power supply configured to provide welding power is provided. The welding system additionally includes a weld cable coupled to the welding power supply and configured to transmit the welding power. The welding system further includes a processor configured to transmit and to receive a plurality of tones to provide communications with a device external to the welding power supply via the weld cable.

A welding torch having a nozzle assembly with multiple attachment methods is disclosed. The nozzle assembly includes a nozzle shell, an electrically insulating sleeve, and a nozzle insert. The nozzle insert is configured for attachment to gas diffuser assemblies with different attachment mechanisms (e.g. a slip-on mechanism relying on frictional force, and/or screw-on mechanism relying on torque).

A welding torch having a nozzle assembly with multiple attachment methods is disclosed. The nozzle assembly includes a nozzle shell, an electrically insulating sleeve, and a nozzle insert. The nozzle insert is configured for attachment to gas diffuser assemblies with different attachment mechanisms (e.g. a slip-on mechanism relying on frictional force, and/or screw-on mechanism relying on torque).

A robot controller controls an arc motion of a robot. The robot controller includes an interpolation point setting unit that sets an interpolation point between movement points in an operation program. The robot controller includes a movement-point angle calculation unit that calculates an angle relating to a reference direction for determining the orientation of the robot, and an interpolation-point angle calculation unit that calculates an angle relating to the reference direction at an interpolation point by interpolating angles relating to the reference direction at the movement points. The reference direction is a direction independent from the positions of the movement points and is set in an operation program in a predetermined coordinate system.

A robot controller controls an arc motion of a robot. The robot controller includes an interpolation point setting unit that sets an interpolation point between movement points in an operation program. The robot controller includes a movement-point angle calculation unit that calculates an angle relating to a reference direction for determining the orientation of the robot, and an interpolation-point angle calculation unit that calculates an angle relating to the reference direction at an interpolation point by interpolating angles relating to the reference direction at the movement points. The reference direction is a direction independent from the positions of the movement points and is set in an operation program in a predetermined coordinate system.

Disclosed is a system for feeding welding wire for welding-type applications. The system includes a welding wire feeder and a separate wire source including a wire source housing. The wire source is connectable to and disconnectable from the wire feeder.