SUCTION PAD, FRICTION STIR WELDING DEVICE, AND FRICTION STIR WELDING SYSTEM

摘要

Provided are a friction sir welding device that is light in weight and can travel by a small force, a suction pad used for the friction sir welding device, and a friction stir welding system. The suction pad (46) includes a plate-like facing section (51) facing an object to which the suction pad sticks; an annular pad section (52) projecting from one surface in the thickness direction of the facing section (51) at its end near the object and making a round on the surface of the facing section (51); a gliding body (53) provided on the surface of the pad section (52) at a portion near the object; and one or more deformation prevention projections (56) projecting from the one surface in the thickness direction of the facing section (51). The gliding body (53) is made of a material having a friction coefficient against the object which is smaller than the friction coefficient of the pad section (52) against the object.