- 专利标题: FORMED MATERIAL MANUFACTURING METHOD
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申请号: US15562051申请日: 2016-03-15
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公开(公告)号: US20180099325A1公开(公告)日: 2018-04-12
- 发明人: Naofumi NAKAMURA , Yudai YAMAMOTO
- 申请人: NISSHIN STEEL CO., LTD.
- 申请人地址: JP Tokyo
- 专利权人: NISSHIN STEEL CO., LTD.
- 当前专利权人: NISSHIN STEEL CO., LTD.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2015-070609 20150331
- 国际申请: PCT/JP2016/058136 WO 20160315
- 主分类号: B21D22/28
- IPC分类号: B21D22/28
摘要:
A formed material 1 having a cylindrical trunk portion 10 and a flange portion 11 formed at an end section of the trunk portion is manufactured by performing multi-stage drawing of a material metal sheet. Multi-stage drawing includes: preliminary drawing that forms, from a material metal sheet 2, a preform 20 having a trunk element 20a; compression drawing that is performed at least once after the preliminary drawing and that forms the trunk portion 10 by drawing the trunk element 20a while applying a pressure-adjustable compressive force to the trunk element 20a; and finish-ironing that is performed for securing dimensional precision at least once following the compression drawing.
公开/授权文献
- US11072013B2 Formed material manufacturing method 公开/授权日:2021-07-27
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