公开(公告)号：US11052455B2

公开(公告)日：2021-07-06

申请号：US16109372

申请日：2018-08-22

Applicant: NHK SPRING CO., LTD.

Inventor： Satoshi Hirano ,  Arata Tatsumi ,  Takatoshi Nanbu

IPC: B21J15/48 ,  H01L21/687 ,  G05B19/402 ,  G05B19/409 ,  B23P19/04 ,  B21D39/00

Abstract: A caulking jig comprises a main body, a blade portion having a blade edge, a projection member fit in the main body, an urging member which urges the projection member, and an engagement mechanism configured to engage the projection member to the main body. In a state in which the projection member is not engaged, the projection member is held at a projected position where a distal end portion of the projection member is projected from the blade edge. In a state in which the projection member is engaged, the projection member is held at an entered position where the distal end portion is retracted to a more entered position than the blade edge.