Patent ID: 6205836
Filing Date: 2001-03-27
Classification: B22D,F02F,F05C

Abstract:
A forging die comprised of a female portion defining an internal cavity into which a blank is inserted and extruded through cooperation of a forging die male portion that extends into said cavity and cooperates with said female die so as to extrude the blank into a desired finished shape that conforms generally to the cavity formed by said male and female die portions at the ends of their stroke, said cavity having a deep extrusion portion that defines a relatively narrow lower peripheral edge, one of said die portions being formed from two pieces that have mating surfaces that extend along the peripheral surface of this cavity and which can move relative to each other slightly under compressive forces, said mating surfaces extending from said peripheral surface of said cavity to an exterior area of each of said two pieces so as to provide stress relief and a path for air escape during the forging process.