Patent ID: 11969818
Assignee: HEFEI UNIVERSITY OF TECHNOLOGY
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 2:
3. The split-type friction stir welding tool with the adjustable stirring pin length according to claim 2, further comprising an arc-shaped buckle, wherein an overlapping portion with a plurality of fixing gears is arranged in a circumferential direction outside the ball screw control shaft, the overlapping portion is carried on a step inside the stirring tool housing, an arc-shaped groove is formed in a circumferential direction of the stirring tool housing, the matched arc-shaped buckle is mounted in the arc-shaped groove, racks that are buckled with the fixing gears correspondingly are arranged on an inner side wall of the arc-shaped buckle, and a top of the inner side wall of the arc-shaped buckle is provided with a limiting buckle which is used for preventing the overlapping portion from moving upwards.