4 +4 TYPE HYDROSTATIC PISTON CAP SECONDS ON THE DEVELOPMENT OF COLD FORGING STRUCTURE

摘要

PURPOSE: the 4+4 types for developing the static pressure piston cap of cold forging mode structure are provided to concentrate pressure, improve static pressure due to trapezoidal, semicircle and triangular punch and one; The groove of shape is formed in four positions. ;CONSTITUTION: the 4+4 types for developing the static pressure piston cap of cold forging mode structure are as follows. Trapezoidal, semicircle and triangular punch and a Ge & phgr; The groove of shape is formed. Insert pad is mounted on die holder to protect trapezoidal, semicircle and triangular-shaped punch from damage. ;The 2012 of copyright KIPO submissions