公开(公告)号：US11203052B2

公开(公告)日：2021-12-21

申请号：US16530991

申请日：2019-08-02

Applicant: CITIC Dicastal CO., LTD.

Inventor： Zuo Xu ,  Jinling Yang ,  Li Yang ,  Xiaoting Zhu ,  Zhen Wang ,  Weizhou Liu ,  Yukun Yang ,  Haifeng Li ,  Zhiwei Yang

IPC: B21J5/02

Abstract: A forging and inclined window hole punching composite die includes an upper die holder, a connection sleeve, an upper die sliding sleeve, a pressure plate, inclined window puncher pins, a center puncher pin, first connection screw rods, first springs, second connection screw rods, second springs, hydraulic assistant systems, a lower die and a bottom plate. Bottom surface of the pressure plate of the composite die is a plane to avoid deformation of a front molding surface. Hydraulic power is added to the inclined window puncher pins to increase the pressure for punching inclined holes, avoid quality problems and increase a demolding force. A multi-split synchronous hydraulic device may well realize synchronization of the plurality of inclined window puncher pins.