Patent ID: 8899468
Filing Date: 2014-12-02
Classification: B23B,B23K

Abstract:
1. A friction stir welding tool for joining materials to be joined by rotating a pin part at a speed to generate frictional heat to thereby cause plastic flow in the materials to be joined, the tool comprising: a probe having the pin part at a distal end thereof, the probe having, at a base portion thereof, probe-side protrusions, probe-side recesses, and a female screw part; a columnar holder having, at a distal end thereof, holder-side recesses and holder-side protrusions, respectively, fitted with the probe-side protrusions and the probe-side recesses, the holder further having a through-hole extending along a center axis thereof; and a bolt inserted through the through-hole and having a male screw part at a distal end thereof, the male screw part being threaded into the female screw part to thereby retain the probe on the distal end of the holder.