The present invention includes: a primary joining process in which a coarse portion having a predetermined width is formed in the vicinity of a step side face within a plasticized region while the rotary tool is being moved one round along a first butted portion to perform friction stirring in a state that a tip of a stirring pin of a rotary tool being rotated is inserted to the same depth as or slightly deeper than a step bottom face and a bottom face of a shoulder portion is in contact with a front face of a sealing body and the stirring pin is slightly in contact with at least an upper portion of a jacket body; and an inspection process in which a passed position of the stirring pin is specified by performing, after the primary joining process, a flaw detection to detect the coarse portion.

A system includes a tool configured to be positioned proximate to respective welding surface of separate components. The tool includes a tool head and an actuator configured to drive rotation of the tool head. The tool also includes a controller having a memory operatively coupled to a processor. The processor is configured to provide a command signal to the actuator to apply a pulsed torque to drive rotation of the tool head to facilitate joining the respective welding surfaces of the separate components to one another.

The present invention discloses an electromagnetic pulse-aided friction stir lock welding processing device and method, which comprises an upper die body and a lower die body. The upper end of the lower die body is provided with a frustum-shaped settling tank. The lower end of the upper die body is provided with a tip inserted into the settling tank, an outer wall of the tip is fitted with an inner wall of the settling tank, a gap for placing parts to be processed is arranged between the upper die body and the lower die body.

A friction stir spot welding apparatus according to the present invention includes: a rotary tool; and a perpendicular-to-plane detector, which detects whether or not the rotary tool is positioned to be in a perpendicular-to-plane state relative to a joining target portion of workpieces. The perpendicular-to-plane detector measures distances to at least three measurement positions set around the joining target portion by means of, for example, position sensors. The measurement positions are set to be positioned at the vertices of a polygon on a reference plane to which forward and backward movement directions of the rotary tool are normal. The perpendicular-to-plane detector detects that the rotary tool is positioned to be in the perpendicular-to-plane state relative to the joining target portion of the workpieces if all the distances to the measurement positions are equal to each other.

A retaining device (3) is provided for a workpiece (7), which is machined by an industrial robot (2), including a machining tool (4), along a machining path (16). The retaining device (3) includes a clamping tool (5) for clamping tool parts (13, 14) on the machining path (16) and a multi-axis guiding device (6) for the clamping tool (5) and for the independent movement thereof relative to the workpiece (7) during the machining process.

The presently disclosed technology includes a friction stir welding apparatus comprising a frame, a moving platform and a parallel mechanism composed of three branch mechanisms, wherein a first branch mechanism comprises a first sliding pair, a first revolute pair, a telescopic rod and a first spherical pair connected in sequence. A second branch mechanism and a third branch mechanism both comprise a third sliding pair, a second revolute pair, a third linkage and a second spherical pair connected in sequence. The friction stir welding apparatus has high stiffness, low inertia, high dynamic performance and high accuracy, which can achieve precision welding with high requirements on processing quality and accuracy for jointing annular seams of large-scale rocket fuel storage tank barrels in the aviation field, for example. The presently disclosed technology also includes a corresponding friction stir welding system.

A friction stir processing tool for friction stir processing includes a shoulder for pressing against a workpiece surface and a pin, which protrudes beyond the shoulder and can be driven to rotate, for plasticizing introduction into at least one workpiece to be processed. The shoulder has an interruption opening on a circumferential region, so that the shoulder is not led around the entire circumference of the pin.

Electrical connection console for a motor vehicle board net comprising a cable 2 with a metallic stranded conductor 4, and an electrical tap electrically and mechanically connected to the stranded conductor 4, characterized in that the tap is formed from a metallic sleeve 10, in that the sleeve 10 is connected to the stranded conductor 4 in a connection region 8 of the stranded conductor 4, and in that the sleeve 10 has a longitudinal extent in a longitudinal axis parallel to a longitudinal axis of the stranded conductor 4, in that the sleeve 10 has a recess 26 whose longitudinal axis runs transversely with respect to the longitudinal axis of the sleeve 10, and in that a contact sleeve 28 is arranged in the recess 26.

A welding tool for joining at least two workpieces at a joining region by friction stir welding includes a tool pin arranged along one axis of the welding tool, for applying frictional heat to the workpieces. The welding tool also includes a shoulder surrounding the tool pin, for separating the joining region from the surrounding area. The shoulder is moveable essentially parallel to the axis of the welding tool.

In the present disclosure, friction stir welding tools having probes and stationary shoulders are disposed at corners between a first workpiece and a second workpiece. A welding device main body includes axially perpendicular movement units for moving spindle units, which hold the respective friction stir welding tools on a frame, in directions perpendicular to rotary shafts of probes, and axial movement units for moving the spindle units in directions parallel to the rotary shafts of the probes.