Invention Grant
- Patent Title: Pressing machine and a method for manufacturing a press-formed product
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Application No.: US16068705Application Date: 2017-01-25
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Publication No.: US10933457B2Publication Date: 2021-03-02
- Inventor: Yasuhiro Ito
- 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: Clark & Brody LP
- Priority: JPJP2016-011980 20160126
- International Application: PCT/JP2017/002576 WO 20170125
- International Announcement: WO2017/131042 WO 20170803
- Main IPC: B21D22/26
- IPC: B21D22/26 ; B21D24/00

Abstract:
A method for manufacturing a press-formed product includes a first step and a second step. In the first step, a concavity is press formed in a blank by use of a punch and a first die. The punch has a shape corresponding to the shape of the entire press-formed product. The first die has a shape corresponding to at least the shape of the concavity. In the second step, a vertical wall and an edge portion are press formed in the blank by use of the punch and a second die. The second die is located adjacent to the first die. The second die has a shape corresponding to at least the shape of the vertical wall and the edge portion. The first step is completed after the second step is completed. The method allows production of a press-formed product which is excellent in fatigue resistance.
Public/Granted literature
- US20190015887A1 A PRESSING MACHINE AND A METHOD FOR MANUFACTURING A PRESS-FORMED PRODUCT Public/Granted day:2019-01-17
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