Patent ID: 6947809
Filing Date: 2005-09-20
Classification: B21D

Abstract:
1. A method of developing a stamping die for a design intent three-dimensional profile workpiece comprising the steps of: (1) stamping a workpiece of material in a current die; (2) measuring the current die stamped workpiece to determine a three-dimensional profile of the stamped workpiece; (3) comparing the current die stamped workpiece profile to the design intent workpiece profile to determine if a positive or negative variance between the profiles is within predetermined limits and designating the current die as the final die if the profile variance is within the predeteimined limits; (4) determining the residual forces in the stamped workpiece when the current die stamped workpiece is conceptually stamped by a standard die configured by the design intent three-dimensional profile of the workpiece if the profile positive or negative variance is not within the predetermined limits; (5) reversing the determined residual forces in the current die stamped workpiece to develop a new current die; and repeating steps (1)-(5), until the profile variance of the current die stamped workpiece is within the predetermined limits.