公开(公告)号：US3635061A

公开(公告)日：1972-01-18

申请号：US3635061D

申请日：1969-12-05

Applicant: SAAB AB

Inventor： RYDELL NILS FOLKE

IPC: B21D22/20 ,  B21D22/12

CPC classification number: B21D22/205

Abstract: In a hydraulic forming tool of the diaphragm type, the punch and the work holder or die member are rigidly mounted on separate pistons that move in communicated cylinders, so that downward movement of one effects upward movement of the other by reason of displacement of fluid from the bottom of one of said cylinders to the bottom of the other. Adequate forming force is assured by metering outflow of fluid from the upper portion of the cylinder having the upgoing piston.

Abstract translation: 在隔膜式的液压成形工具中，冲头和工件保持器或模具构件刚性地安装在在连通的气缸中移动的单独的活塞上，使得一个的向下运动由于流体从 一个所述气缸的底部到另一个的底部。 通过计量流体从具有上活塞的气缸的上部流出来确保足够的成形力。