Clamp for vertical lathe of balance shaft box

The utility model provides a clamp for a vertical lathe of a balance shaft box body, which relates to the technical field of box body processing clamps and comprises a bottom plate, two supporting rods are fixedly connected to the top surface of the bottom plate, a hydraulic telescopic rod is mounted on one side of each supporting rod in a penetrating manner, and the hydraulic telescopic rod is fixedly connected with the top surface of the bottom plate. A clamping plate is fixedly connected to one end of a movable rod of the hydraulic telescopic rod, a rotating groove is formed in one side of the clamping plate, a movable block is arranged on the inner wall of the rotating groove, and rotating shafts are rotationally connected between the two ends of the movable block and the inner wall of the rotating groove. The hydraulic telescopic rods are started to push the clamping plates to be in pressing contact with the edges of the two sides of the box body, when the clamping plates make contact with the protruding