A welding system that, using a junction at which a standing plate and a bottom plate meet as a welding line, makes an electrode weave centered on the welding line and thereby welds along the welding line. In this welding system, control is performed such that the arc voltage at a standing-plate-side weaving edge is equal to or less than the arc voltage at a welding-line center position, such that the arc voltage at a bottom-plate-side weaving edge becomes equal to or greater than the arc voltage at the welding-line center position, and such that the arc voltage at the standing-plate-side weaving edge becomes lower than the arc voltage at the bottom-plate-side weaving edge. The system can suppress occurrence of inferior bead appearance and of welding defects in horizontal fillet welding.

A welding system that, using a junction at which a standing plate and a bottom plate meet as a welding line, makes an electrode weave centered on the welding line and thereby welds along the welding line. In this welding system, control is performed such that the arc voltage at a standing-plate-side weaving edge is equal to or less than the arc voltage at a welding-line center position, such that the arc voltage at a bottom-plate-side weaving edge becomes equal to or greater than the arc voltage at the welding-line center position, and such that the arc voltage at the standing-plate-side weaving edge becomes lower than the arc voltage at the bottom-plate-side weaving edge. The system can suppress occurrence of inferior bead appearance and of welding defects in horizontal fillet welding.

The invention relates to a welding assembly for the permanent joining of a first tubular component with a second component along a two- or three-dimensional intersection curve, along which both components contact, comprising a securing assembly for detachably securely joining on a tubular end of the first component facing away from the intersection curve, a manipulator unit mounted directly or indirectly on the securing assembly such that it can pivot about a tube longitudinal axis assigned to the first component. The manipulator unit has a freely positionable manipulator end, with a welding tool attached to the freely positionable manipulator end. The securing assembly comprises a clamping module that can at least partially be introduced into the tubular end of the first component on the end side and in an axial manner. The clamping module is detachably securely to a tube inner wall of the first tubular component, as well as a carrier ring module which is rotatably attached to the clamping module, which axially extends beyond the tubular end of the first tubular component.

The invention relates to a welding assembly for the permanent joining of a first tubular component with a second component along a two- or three-dimensional intersection curve, along which both components contact, comprising a securing assembly for detachably securely joining on a tubular end of the first component facing away from the intersection curve, a manipulator unit mounted directly or indirectly on the securing assembly such that it can pivot about a tube longitudinal axis assigned to the first component. The manipulator unit has a freely positionable manipulator end, with a welding tool attached to the freely positionable manipulator end. The securing assembly comprises a clamping module that can at least partially be introduced into the tubular end of the first component on the end side and in an axial manner. The clamping module is detachably securely to a tube inner wall of the first tubular component, as well as a carrier ring module which is rotatably attached to the clamping module, which axially extends beyond the tubular end of the first tubular component.

Provided is a welded joint that suppresses occurrences of blow holes in initial parts and final parts in a Zn plated steel sheet and reduces the occupancy ratio for blow holes in the welded part as a whole. The arc welded joint is obtained by the method of arc-welding Zn-based plated steel sheets, in which a blowhole occupancy over the entirety of the welding length is less than 30%.

Provided is a welded joint that suppresses occurrences of blow holes in initial parts and final parts in a Zn plated steel sheet and reduces the occupancy ratio for blow holes in the welded part as a whole. The arc welded joint is obtained by the method of arc-welding Zn-based plated steel sheets, in which a blowhole occupancy over the entirety of the welding length is less than 30%.

A first wheel and a second wheel are attached to a vehicle body, the first wheel and the second wheel being attractable to a contact surface and being switchable between an attracted state and an attraction release state. A traveling motor rotates the first wheel and the second wheel. A control unit switches each of the first wheel and the second wheel between the attracted state and the attraction release state and controls rotation. The control unit implements a first traveling mode for traveling on a first surface in a direction from the second wheel toward the first wheel, and a second traveling mode for traveling by setting the first wheel to the attraction release state and setting the second wheel to the attracted state, and rotating the second wheel until the first wheel comes into contact with a second surface rising from the first surface.

A robotic welding system having detection means for in one embodiment detecting a path of a ferro-magnetic, light-reflective or radioactive material traced over a weld seam, and a controller for providing machine commands to cause a torch tip electrode to move the weld seam. Alternatively the detection means comprises means for detecting and tracking a) a position in 3D space of a pointer tip which is in known positional relationship to determined GPS coordinates of a reference point on the welder when traced along a desired weld seam; b) the path of a point source of light when traced along a location of a desired weld seam; c) the path of light-reflective material traced or positioned over the desired weld seam; or d) a path of a tip of a digitized pointer object when traced along a desired weld seam. Methods of operating such robotic welder also disclosed.

A control system for forming a tapered structure includes a sensor providing feedback for a machine for forming a tapered structure including at least three rolls having at least one bend roll and at least two guide rolls. The guide rolls may include rollette banks having a plurality of rollettes. The machine may also include an adjustment mechanism to position at least one of the rolls, where a diameter of the tapered structure being formed is controlled by relative positions of the rolls. The machine may also include a joining element to join edges of a stock of material together as it is rolled through the rolls to form the tapered structure. The control system may also include a controller to receive feedback from the sensor and to send a control signal based on the feedback to the adjustment mechanism for positioning at least one of the rolls.

A control information generation device includes: a coordinate information acquisition unit configured to acquire coordinate information on a plurality of passing points in a path; a movement amount calculation unit configured to set a repulsion force applied to adjacent passing points among the passing points, and obtain, when the set repulsion force is applied to the passing point, a movement amount of the passing point from a position before the repulsion force is applied to a position where the passing point is in dynamic equilibrium by calculation for the plurality of passing points; a path update unit configured to update the path by correcting coordinates of the plurality of passing points according to the movement amount; and a control information output unit configured to output information on the updated path.