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 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 process of welding fittings to ends of a double wall pipe comprising forming a first welded joint between an inner pipe and an inner receiver of a first fitting; forming a second welded joint between an outer pipe and an outer receiver of the first fitting; forming a third welded joint between the outer pipe and an outer receiver of a second fitting; and forming a fourth welded joint between the inner pipe and an inner receiver of the second fitting.

A frame like structure supporting a laser engraving machine between left and right vertically adjustable pedestal. Each pedestal is mounted to a set of vertically oriented screw shafts wherein at least one shaft on each side frame is driven by a stepper motor connected to the screw shaft adjacent the bottom end thereof. Manually operated locks are provided at the tops of the screw shaft to prevent inadvertent rotation caused by the weight of the engraving machine in the event of a motor failure. The pairs of screw shafts on each side of the frame are coupled by belts to permit one motor to rotate both shafts and one lock to lock both shafts.

A frame like structure supporting a laser engraving machine between left and right vertically adjustable pedestal. Each pedestal is mounted to a set of vertically oriented screw shafts wherein at least one shaft on each side frame is driven by a stepper motor connected to the screw shaft adjacent the bottom end thereof. Manually operated locks are provided at the tops of the screw shaft to prevent inadvertent rotation caused by the weight of the engraving machine in the event of a motor failure. The pairs of screw shafts on each side of the frame are coupled by belts to permit one motor to rotate both shafts and one lock to lock both shafts.

A portable welding system casing includes front, rear, top and bottom portions. First and second side members can each have a plurality of fastening lug portions. The first and second side members may each have a recess so that the recess of the first side member receives a first perimeter edge of the front, rear, top and bottom portions and the recess of the second side member receives a second perimeter edge of the front, rear, top and bottom portions. A plurality of handle members can be coupled between associated fastening lug portions of the first and second side member. First and second foot members coupled to respective surfaces of the front, rear and bottom portions. The resulting casing has improved structural strength and rigidity.

An automatic welding system, an automatic welding method, a welding assistance device, and a program wherein the amount of correction of the welding speed is determined on the basis of the distance between an arc and the tip of a molten pool when the distance between the arc and the tip of the molten pool is within a predetermined range in arc welding performed while alternately weaving a welding torch in the front downward direction and the rear upward direction when the welding progress direction is the frontward direction with respect to a horizontally extending groove formed between two members to be welded aligned in the vertical direction.

A welding unit for welding rails of a track includes a first sub-unit which is displaceable on unit guides in a rail longitudinal direction relative to a second sub-unit by using displacement cylinders. Each sub-unit includes clamping cylinders disposed underneath the unit guides and coupled to clamping jaws for clamping the rails. The two sub-units are connected by the displacement cylinders in that a cylinder body of the respective displacement cylinder is connected to one sub-unit and a piston rod of the respective displacement cylinder is connected to the other sub-unit. Thus, it is not necessary to support the displacement cylinders relative to a transverse beam disposed at the front.

A computer-numerically-controlled (CNC) machine is configured to (i) measure a power of a beam of electromagnetic energy at a location between a source of the electromagnetic energy and a destination in the CNC machine, the beam of electromagnetic energy traveling from the source to the destination being susceptible to one or more interferences, and the one or more interferences being capable of altering the power of the beam of electromagnetic energy by at least diverting, away from an intended path for the beam of electromagnetic energy, at least a portion of the beam of electromagnetic energy, (ii) detect, based at least on the measured power of the beam of electromagnetic energy being less than a threshold value, an interference of the beam of electromagnetic energy, and (iii) in response to detecting the interference of the beam of electromagnetic energy, perform one or more actions.

A rotating are sensor is provided. The rotating arc sensor includes a motor, a connecting rod for driving a welding gun to perform an annular movement, a sliding assembly for supporting a weight of the connecting rod and supporting a free movement of a first end of the connecting rod, and an eccentric oscillating member for driving a second end of the connecting rod to perform the annular movement, wherein a center of a rotating shaft of the motor is provided with a hollow cavity capable of communicating with both ends of the motor, the sliding assembly is disposed at a top end of the motor, and the first end of the connecting rod protrudes out of the top end of the motor through the hollow cavity and is connected with the sliding assembly. The eccentric oscillating member includes a first flange and a second flange.