Lightweight brake caliper body blank forming die

The utility model discloses a light-weight brake caliper body blank forming die which comprises a lower die and an upper die, protruding blocks are arranged on the outer wall of the lower die and the outer wall of the upper die, a sealing groove is formed in the outer wall of the top of the lower die, and a sealing ring clamped in the sealing groove is arranged on the outer wall of the bottom of the upper die. Mounting bases are fixed to the outer walls of the two sides of the lower die through bolts, long-neck bolts are in threaded connection with the outer walls of one sides of the mounting bases, and one ends of the long-neck bolts are rotationally connected with extrusion blocks through bearings. The long-neck bolt is rotated to drive the extrusion block to move, the extrusion block can extrude the protruding blocks on the upper die and the lower die, the sealing ring is clamped in the sealing groove in a matched mode, the sealing performance between the lower die and the upper die can be higher, and the