ACTUAL PUNCH FOR HYDROFORMING EQUIPMENT FOR INSERTING SOCKETS PARTS INTO HOLLOW PARTS DIVIDED BY RIB SO THAT THE SAME HYDRAULIC PRESSURE IS SUPPLIED TO HOLLOW PARTS TO PREVENT DEFORMATION OF RIB AND HAVE PIPE EXPANDED UNIFORMLY

PURPOSE: To provide an actual punch for hydroforming equipment for enabling the pipe to be uniformly expanded by uniformly supplying hydraulic pressure into a pipe constructed by installing a rib inside the workpiece to reinforce strength and stiffness of a pipe workpiece for hydroforming itself. CONSTITUTION: In an actual punch for hydroforming equipment inserted into both ends of a pipe with a rib by an axial directional supply unit to supply axial compression and hydraulic pressure into the pipe that is inserted into a hydroforming mold, the actual punch for hydroforming equipment comprises a body part(23) penetrated into both sides of the hydroforming mold respectively; a flange part(27) formed on a rear portion of the body part through a connection part(25) and clamped to the front of an operation rod of the axial directional supply unit; and a plural socket parts(31) projectingly mounted on the front surface of the body part in such a shape that the socket part are divided into two socket parts around the rib of the pipe, wherein at least one or more of the actual punches comprise a hydraulic pressure line(21) formed inside the body part, and hydraulic pressure discharge ports(35) installed in the respective socket parts so that the hydraulic pressure discharge ports are connected to the hydraulic pressure line inside the body part.