The utility model discloses a
water cooling plate
friction stir welding tool for a motor, which comprises a
welding operation table, the surface of the
welding operation table is uniformly provided with threaded mounting holes, the four corners of the surface of the
welding operation table are provided with clamping mechanisms, and each clamping mechanism comprises a lower pressing block, a supporting screw rod, an inner hexagonal screw rod, an anti-skid
gasket and a supporting block. A strip-shaped hole is formed in the surface of the lower pressing block, the surface, penetrating through the strip-shaped hole, of the top end of the inner hexagonal screw is sleeved with an anti-skid
gasket, and the surface, penetrating through the threaded mounting hole, of the bottom end of the inner hexagonal screw is sleeved with a limiting nut. The clamping mechanisms are installed at the four corners of the welding operation table, the clamping mechanisms can be installed at the corresponding positions according to the size of the
water cooling plate, meanwhile, the clamping position of the lower pressing block can be adjusted by adjusting the position of an anti-skid
gasket in a strip-shaped hole, and the height of the supporting position of the supporting block is conveniently adjusted by arranging two adjusting nuts on the surface of a supporting screw in a sleeving mode; and the four corners of the
water cooling plate can be clamped more stably by the lower pressing blocks of the clamping mechanisms.