Patent ID: 11958127
Assignee: HEFEI UNIVERSITY OF TECHNOLOGY
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 3:
4. The shoulder-angle-adjustable friction stir welding tool suitable for the fillet joint according to claim 1, further comprising a segment, wherein the stirring pin channel is two semicircle orifices in a middle of a joint of the first shoulder and the second shoulder, a diameter of the segment is equal to the sum of radii of the two semicircle orifices, a cylindrical channel that is slightly greater than a diameter of the stirring pin is arranged inside the segment, the segment is mounted on the stirring pin through the cylindrical channel and located between the two semicircle orifices inside the joint of the first shoulder and the second shoulder, an intersecting line of two tangent planes of the segment is consistent with that of lower-side planes of the first shoulder and the second shoulder, and the tangent planes on both sides of the segment are provided with a gasket slot, which is used for locating and mounting a spherical crown gasket.