A welding or cutting device includes an internal combustion engine coupled to a generator for generating electrical power. A welding or cutting power supply is powered by the generator. The welding or cutting power supply supplies a welding or cutting output signal. An auxiliary outlet circuit is configured to receive power from the generator. The auxiliary outlet circuit includes at least one auxiliary load outlet. A controller controls an engine speed of the internal combustion engine. The controller is configured to determine an anticipated load on the generator to be supplied through the auxiliary load outlet, based on a no load condition of the auxiliary load outlet, and adjust an idle speed of the engine based on the anticipated load. The controller is further configured to subsequently increase the engine speed, from the idle speed to an auxiliary load speed, when the generator supplies power through the auxiliary load outlet.

Provided is a weaving control method for obtaining an excellent weld quality of various kinds of position welding such as flat welding, horizontal welding, and vertical welding using a portable welding robot that moves on a guide rail. The weaving control method includes: a setting step of setting at least a condition of a weaving reference trajectory relating to a reference distance for determining a weaving pattern; and a speed condition calculation step of calculating a speed condition for giving an instruction to a robot movement mechanism that moves the portable welding robot for each of a plurality of predetermined direction components based on the weaving pattern determined based on the setting step, in which an instruction of a stop signal and an instruction of a departure signal to be given immediately after instructing the stop signal or after the lapse of a predetermined stop time are synchronized with the speed condition of each of the plurality of direction components calculated in the speed condition calculation step at least when a weaving end is reached.

In a method in which a welding process is carried out on a workpiece with a welding torch and to a welding device for carrying out the method, a welding current source is supplied in order to provide a welding voltage, and an electrical voltage is applied, at least temporarily, during the welding process to an external element of the welding torch, in particular to an outer wall of a gas nozzle, and a possibly occurring electrical contact between the external element and a further element, in particular the workpiece or a contact tube, is detected by the electrical voltage applied. The welding current source is electrically connected via at least one first resistor to the external element of the welding torch and the external element of the welding torch is connected to the electrical potential of the workpiece via at least one second resistor.

A method and apparatus for welding a first component to a second component. A scanning head is positionally calibrated within a localised work envelope including the components, the positional calibration being referenced to at least one datum feature within the work envelope. Profiles of the components are scanned within the localised work envelope using the calibrated scanning head. A cloud point data image of defined coordinate positions of surfaces and edges to be welded within a space envelope is generated from the scanned profiles. A robotic welding torch electrode tip is scanned using the calibrated scanning head to determine a defined coordinate position of the electrode tip within the space envelope. The components are welded using the torch, the torch controlled using the cloud point data image and the defined coordinate position such that the electrode tip is held at pre-determined stand-off positions around the components during the welding.

A system and method to correct for height error during a robotic welding additive manufacturing process. One or both of a welding output current and a wire feed speed are sampled during a robotic welding additive manufacturing process when creating a current weld layer. A plurality of instantaneous contact tip-to-work distances (CTWD's) are determined based on at least one or both of the welding output current and the wire feed speed. An average CTWD is determined based on the plurality of instantaneous CTWD's. A correction factor is generated, based on at least the average CTWD, which is used to compensate for any error in height of the current weld layer.

A tip-base metal distance control method is provided. In this method, actual welding currents are measured under a predetermined actual welding condition, and an average actual welding current under the actual welding condition is then calculated. From a reference-current storage table, an average welding current under a welding condition that corresponds to the actual welding condition is extracted, and the extracted current value is set as a reference current. The calculated average actual welding current is then compared with the reference current to obtain a comparison result. The position of a welding torch in an upward or a downward direction is then corrected based on the comparison result.

The present invention relates to a welding torch including a mounting jig for mounting a wire-aiming guide which feeds a welding wire toward a molten pool of a work piece, wherein the mounting jig has a male screw that can be screwed into a female screw provided in a torch body, and is detachably mounted to the torch body; and a mounting jig. The present invention provides the welding torch with which a wire-aiming guide can be stably mounted and which can mount a highly versatile wire-aiming guide; and the mounting jig.

A TIG welding device (10) includes a welding robot (11), robot control device (12), welding torch (13), welding control device (14), gas feeder (15), and a height detection device (16). The welding torch (13) is set at a reference position, and the height detection device (16) detects the respective heights of two tip parts (4e). The robot control device (12) drives the welding robot (11) such that a torch electrode (13c) of the welding torch (13) abuts on central part of the higher tip part (4e). When the torch electrode (13c) is moved toward the reference position while power is supplied to the torch electrode (13c), and inert gas flows in the periphery of the torch electrode (13c), arc (AC) is generated in a gap between the tip parts (4e) and the torch electrode (13c). The overall two tip parts (4e) are melted and welded by this arc (AC).

A first aspect of the present disclosure is related to a computer-based method for welding by a robot, comprising the steps: obtaining a welding location relative to an object by a user; obtaining an environment information based on and/or comprising the welding location; computing a welding representation based on the welding location and the environment information; providing information for a robot to weld the object based on the welding representation.

Disclosed is a welding system configured to perform additive manufacturing, particularly a welding system to achieve a stable a laser metal deposition with hot wire process by controlling the contact point between the welding wire and the workpiece. For example, the resistance of the stick-out wire is measured and the measured resistance is converted to a distance signal, which can then be used for comparison to a desired distance. The distance between the contact tip and the workpiece can then be adjusted based on the comparison. The present disclosure also relates to using a constant enthalpy system to determine and control the contact tip to workpiece distance.