发明名称 Assembly for stamping metal components
摘要 The assembly includes an internal matrix (1) which acts against a metal blank (14). An outer matrix (2) acts against the external side of the metal blank. A further matrix is coaxial with the blank and includes an oblique shaping surface (3a) to act against the blank and shape a connecting wall (14b). - A central matrix (4) forms a cavity within the blank, and an axial orifice opening into the cavity. The central matrix is formed of three detachable components (5-7) to permit removal after formation of the metal cap.
申请公布号 ES2005873(A6) 申请公布日期 1989.04.01
申请号 ES19870001463 申请日期 1987.05.18
申请人 NGK INSULATORS, LTD. 发明人 MATSUO HIROTO;NISHIWAKI YOSHITAKA;YAMAMORI ITSUO;TANAKA NORIO
分类号 B21K21/14;(IPC1-7):B21K21/14 主分类号 B21K21/14
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