Patent ID: 8033154
Filing Date: 2011-10-11
Classification: B21J,B21K,B62D,Y10T

Abstract:
1. A die apparatus for performing a flashless forging operation to manufacture the toothed portion of a steering rack, said toothed portion comprising teeth, said die apparatus comprising: first and second die members and a punch member, each having a forming surface shaped substantially as an obverse of an exterior portion of said toothed portion, and at least a portion of the forming surface of said first die member being shaped substantially as the obverse of said teeth, wherein said first and second die members are moveable towards each other to a closed position thereby partially forging said toothed portion from a blank placed in said die apparatus and forming a substantially closed cavity defined by said forming surfaces, said punch member being disposed opposite said first die member, and said punch member being movable towards said first die member into said cavity, once said die members are in said closed position, thereby completing said forging operation.