Patent ID: 7043955
Filing Date: 2006-05-16
Classification: B21J,B21K

Abstract:
1. A forging die apparatus for forging a forging material by using a mechanical press for converting a rotary driving force of a rotary driving source into reciprocating motion of a ram, said apparatus comprising: a first die member formed with a cavity for arranging said forging material therein; a second die member for making reciprocating motion integrally with said ram to apply a pressurizing force to said forging material arranged in said cavity; a punch member movably disposed on said second die member; and a buffering mechanism provided for said second die member, for determining positions of said first die member and a lower most surface of said second die member in a height direction by allowing said lower most surface of said second die member to first abut against said first die member before arrival of said punch member at a bottom dead center position, and then permitting further movement of said punch member to said bottom dead center position, and absorbing a residual displacement amount of said punch member during a period from said abutment of said lower most surface of said second die member against said first die member to said arrival at said bottom dead center position.