Kawasaki Jukogyo Kabushiki Kaisha

Syuhei Yoshikawa

Hideki Okada

Masahiro Miyake

Toshiyuki Hirashima

Shirou Honma

Hidehito Nishida

Ryoichi Hatano

Kenichi Kamimuki

Kenji Waki

Mitsuhiro Kamioka

Yusuke Yoshida

Masahiro Takagi

Hiroki Oribe

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 tool and method, by which influence on durability of the tool is suppressed even when resistance force generated when the tool moves for joining acts on facing end portions of workpieces which are located close to an attachment side of the tool. The tool includes: a stirring shaft; a first shoulder portion provided to be unrotatable relative to the shaft and configured to rotate together with the shaft when it rotates; a second shoulder portion provided to be unrotatable relative to the shaft and configured to rotate together with the shaft when it rotates; and a third shoulder portion attached around the shaft located between the first and second shoulder portions, and includes an inclination preventing portion to prevent inclination of the shaft by contacting the workpieces to receive reaction force from the workpieces when the shaft is made to move along joining lines.

Friction stir welding tool and friction stir welding method

A method for operating a double-action friction stir welding device including a welding tool having a pin member and a shoulder member, a projection/retraction mechanism for causing the pin member to project/retract relative to the shoulder member, a rotation mechanism for rotating a welding tool, and an advancing/retracting mechanism for advancing/retracting the welding tool, the method including cleaning at least one of the outer circumferential surface of the pin member and the inner circumferential surface of a through hole of the shoulder member on the basis of the level of an adhesion parameter correlated with the degree of adhesion of the material of a welding object, caused by friction stir welding, on the outer circumferential surface of the pin member and the inner circumferential surface of the through hole of the shoulder member.

Method for operating double-action friction stir welding device, and double-action friction stir welding device

A friction stir welding apparatus includes: a rotating shaft, on which a thread for friction stirring is formed; and a drive unit rotatably supporting the rotating shaft. A rotating shoulder configured to rotate together with the rotating shaft to generate frictional heat between the rotating shoulder and back surfaces of workpieces is fixed to a distal end of the rotating shaft. The rotating shoulder is pushed against the back surfaces of the workpieces by a pushing mechanism. A stationary shoulder penetrated by the rotating shaft and configured to hold the workpieces in a sandwiching manner together with the rotating shoulder is non-rotatably mounted to the drive unit or a member connected to the drive unit.

Friction stir welding apparatus with an L-shaped support

Growing community of inventors

Kobe, Japan

Syuhei Yoshikawa