- Patent Title: Manufacturing method and manufacturing device of sheared components
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Application No.: US15309142Application Date: 2015-05-07
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Publication No.: US10335846B2Publication Date: 2019-07-02
- Inventor: Takashi Matsuno , Koichi Sato , Takashi Yasutomi
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2014-097044 20140508
- International Application: PCT/JP2015/063215 WO 20150507
- International Announcement: WO2015/170707 WO 20151112
- Main IPC: B21D28/02
- IPC: B21D28/02 ; B21D28/14 ; B21D28/16

Abstract:
In a manufacturing method of sheared components, the shearing including a process of fixing a workpiece to a die, and a process of punching the workpiece by bringing a punch and the die relatively close to each other, is performed a plurality of times, and when a shearing sequence is started, the shearing is performed by using a punch including a first cutting edge having a first tip end surface which opposes the workpiece, and a first retracting surface which retracts from the first tip end surface considering an approaching direction to the die as a standard; and a die including a second cutting edge having a second tip end surface which opposes the workpiece, and a second retracting surface which retracts from the second tip end surface considering an approaching direction to the punch as a standard.
Public/Granted literature
- US20170080475A1 MANUFACTURING METHOD AND MANUFACTURING DEVICE OF SHEARED COMPONENTS Public/Granted day:2017-03-23
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