公开(公告)号：US4989439A

公开(公告)日：1991-02-05

申请号：US272403

申请日：1988-11-17

Applicant: Lee R. Ewert ,  Sumner B. Sargent ,  Walter Leodolter

Inventor： Lee R. Ewert ,  Sumner B. Sargent ,  Walter Leodolter

IPC: B21D25/02

CPC classification number: B21D25/02 ,  Y10S72/702

Abstract: A device and method for taking to account the elasticity of materials during bending operations to cause the proper amount of overbending such that after springback and while at rest, the material assumes its intended shape.

Abstract translation: 一种用于在弯曲操作期间考虑材料的弹性以引起适当量的过度弯曲的装置和方法，使得在回弹之后并且在静止时材料呈现其预期的形状。