Kawasaki Jukogyo Kabushiki Kaisha

Yusuke Yoshida

Hideki Okada

Masahiro Miyake

Syuhei Yoshikawa

Kenichi Kamimuki

A double-acting friction stir spot welding apparatus according to the present disclosure includes a pin member () formed in a cylindrical shape, a shoulder member () formed in a hollow cylindrical shape and into which the pin member () is inserted, a rotary drive () that rotates the pin member () and the shoulder member () on an axis (Xr) coaxial with the pin member (), and a linear drive () that reciprocates each of the pin member () and the shoulder member () along the axis (Xr). Oil solution () is disposed at at least one circumferential surface among an outer circumferential surface () of the pin member (), an inner circumferential surface () of the shoulder member (), an outer circumferential surface () of the shoulder member (), and an inner circumferential surface () of a clamp member ().

Double-acting friction stir spot welding apparatus and method of operating double-acting friction stir spot welding apparatus

A friction stir welding apparatus is used at a butted portion where a second workpiece is butted against a first workpiece such that the second workpiece is upright on the first workpiece. The friction stir welding apparatus includes: a rotary tool that is plunged into one inner corner of a pair of inner corners that are positioned, at the butted portion, on both sides of the second workpiece, respectively; an inner corner presser that presses the other inner corner of the pair of inner corners; and a mover that moves the rotary tool and the inner corner presser along a direction in which the butted portion extends. The inner corner presser includes a pressing roller that presses the other inner corner while rolling in a state where the inner corner presser is being moved by the mover.

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Kobe, Japan

Yusuke Yoshida