Machining clamping jig for wind power casting

The utility model relates to the technical field of wind driven generator parts, in particular to a machining and clamping jig for a wind power casting. The machining device comprises a machining table, and a first bidirectional lead screw sliding table is arranged in the machining table. According to the machining clamping jig for the wind power casting, the arranged first bidirectional lead screw sliding table and the arranged second bidirectional lead screw sliding table can drive the two first supporting plates and the two second supporting plates to conduct relative movement adjustment correspondingly, and the four supporting plates can adapt to brake disc castings with different calibers according to the adjusted calibers; threaded rods in threaded connection with the surfaces of the first supporting plate and the second supporting plate can rotate downwards, so that pressing plates at the lower ends of the threaded rods are pressed on the surface of the brake disc casting, and the brake disc casting is