Steel ball positioning clamp

The utility model discloses a steel ball positioning clamp which comprises a base, a supporting plate and mounting seats distributed on the outer side of the supporting plate are arranged at the top of the base, electric push rods are mounted on the mounting seats, and detachable clamping blocks are mounted at the telescopic ends of the electric push rods. According to the device, the supporting plate is arranged between the multiple mounting seats and connected with the sliding grooves in the side walls of the mounting seats through the sliding blocks, the screws penetrate through the sliding blocks, the positioning pins can be in butt joint with the positioning holes through screwing of the screws and the threaded sleeves so that the supporting plate can be fixed, the positioning holes are distributed in the vertical direction of the mounting seats, and therefore the supporting plate can be fixed conveniently. In other words, the positioning pins are in butt joint with the positioning holes in different pos