The laser processing machine includes a beam oscillation mechanism that oscillates a beam spot on a surface of a sheet metal. The control device controls the beam oscillation mechanism so as to oscillate the beam spot with an oscillation component in a direction orthogonal to a cutting direction of the sheet metal in a non-holding region, in which a holding portion of the conveyance apparatus for conveying a product is not held, when cutting the product from the sheet metal by irradiating the sheet metal with the laser beam. The non-holding region is at least a part of a periphery of a protrusion portion of the product, or at least a part of a periphery of a recess forming region in which a recess of the product is formed.

The invention relates a torch body for thermal joining of at least one workpiece, in particular for arc welding or arc brazing, said torch body comprising a non-consumable electrode provided in the body, in particular a tungsten electrode, for generating an arc between the electrode and the workpiece. The torch body has an end nozzle, which is devoid of potential, for discharging a shielding gas flow from a gas outlet. A secondary flow channel is provided for dividing the shielding gas flow into a main gas flow and a secondary gas flow, the secondary gas flow annularly surrounding the main gas flow at the gas outlet.

A reflow soldering system comprising one or a plurality of individually heatable soldering process zones. The reflow soldering system is configured to supply heat to a workpiece selectively through condensation or through convection or as a combination of convection and condensation.

A robot controller includes a contact detection unit that detects contact of a welding wire protruding from a welding torch with a welding target, an override-value adjustment unit that sets and changes an override value for increasing or decreasing an operating speed of the robot from a predetermined speed, and a control unit which receives an operation signal from a teaching operation device and that controls the robot according to the operation signal at the operating speed based on the override value which is set by the override-value adjustment unit. When the contact of the welding wire with the welding target is detected by the contact detection unit, the control unit temporarily stops the robot, and the override-value adjustment unit decreases the override value.

A welding system can include a carriage having a top surface and a bottom surface. A first set of wheels can be coupled to the top surface of the carriage, and a second set of wheels can be coupled to the top surface of the carriage, spaced apart from the first set of wheels to create a first beam channel. The welding system can further include a first beam that includes a rack extending along a side of the first beam. The first beam can extend through the first beam channel and engage with the first and second sets of wheels. The welding system can further include a first positioning motor that includes a pinion gear. The first positioning motor is removeably coupled to the carriage such that the pinion gear is positioned to engage the rack extending along the first beam.

A self-contained track or wheeled welders' cart may be driven at a wheel or set of wheels and/or at a track or set of tracks by hydraulic wheel drive motor(s). The hydraulic wheel/track motor(s) may in turn be driven by high-pressure hydraulic oil provided by an electric-hydraulic pump motor driven by electricity that is generated on the cart by an internal combustion engine. The powered cart may be moved forward and backward via, for example, a radio or other non-wired-signal remote controller in communication with a drive system for the cart's electric-hydraulic driven tracks(s) and/or wheels(s) on the cart. Also, the remote controller may be in communication with a rack and pinion type steering mechanism, for example. Electricity created on the cart may be used also for a portable welding system carried on the cart.

A welding apparatus comprises support members adapted to support parts to be welded, a slit being defined between planes of the support members to expose the parts to be welded. A linear actuator unit having a carriage linearly displaceable along the slit. A welding unit is mounted to the carriage having a torch located substantially below the planes of the support members, and is adapted to be in proximity to the parts via the slit to transmit current to the parts to weld same.

A GTAW system and a welding method suitable for ultra-narrow gaps, and belongs to the technical field of narrow gap welding. The device includes a argon arc welding machine, a GTAW torch, a welding trolley, a wire feeding device, and a gas protection device. The GTAW torch includes a rotating motor, a rotating tungsten, a conductive system, and a gas supply system. The non-axisymmetric rotating tungsten is drived by the rotating motor through the central rotating shaft. The conductive system is used for connecting and supplying electric power from the argon arc welding machine, and the air supply system is used for providing shielding gas into the welding torch. The GTAW torch is fixed on the welding trolley, and the GTAW torch is moved by the welding trolley, and the wire feeding device moves synchronously with the welding torch.

A support ring supports a welding ring to guide welding bugs around a coated pipe section. The support ring has a tubular body to support the welding ring, the body having substantially circular curvature around a longitudinal axis. At least one grounding extension connected to the body is offset longitudinally and radially outwardly with respect to the body and the longitudinal axis. This allows the grounding extension to lie radially outboard of a parent coating of the pipe section while the body encircles a cut-back end zone where the parent coating has been cut back. Pipe sections abutting end-to-end for welding can each be fitted with these support rings. This enables welding rings to encircle both of the cut-back end zones and allows effective grounding connections to be made without enlarging the cut-back end zones.

A fastener welding apparatus having a frame assembly, a welding assembly, a coupling assembly and a locating assembly. The welding assembly has a welder frame and a welding electrode assembly coupled thereto. The coupling assembly has a suspension frame, a frame axle and a welding axle. The frame axle is fixedly engaged to the frame assembly and the welding axle is fixedly engaged to the welding assembly. The suspension frame is pivotably coupled to each of the frame axle and the welding axle. The locating assembly is structurally configured to selectively allow the suspension frame to pivot relative to the frame axle and the welding axle.