METHOD AND MEANS FOR RELIEVING STRESSES IN DIE ASSEMBLIES

摘要

METHOD AND MEANS FOR REDUCING STRESSES IN DIE ASSEMBLIES A method and means for relieving unwanted tensile stresses in a die are disclosed. The method involves steps of determining level of stress in critical regions of the die and then supporting the die in a way to induce counterstresses that substantially eliminate unwanted tensile stresses therein during a forming operation. A supporting means for reacting to the axial component of loads applied to the die cavity during the forming operation includes a supporting surface which is geometrically related to a contacting surface of the die to effectively reduce or eliminate tensile stresses during the forming operation.