发明授权
- 专利标题： Method of forming curled portion
- 专利标题（中）： 形成卷曲部分的方法
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申请号： US12830119申请日： 2010-07-02
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公开(公告)号： US08312753B2公开(公告)日： 2012-11-20
- 发明人: Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi
- 申请人： Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi
- 申请人地址： JP Tokyo
- 专利权人： Honda Motor Co., Ltd.
- 当前专利权人： Honda Motor Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Rankin, Hill & Clark LLP
- 优先权： JP2009-160918 20090707
- 主分类号： B21D22/00
- IPC分类号： B21D22/00 ; B21D22/21
摘要：
A method of forming a hollow curled portion on a hollow body, the curled portion being oriented from one end to the other end of the hollow body. The method includes a bending step of curving an end of the hollow body toward another end of the hollow body, thereby forming a curled portion, an ironing step of ironing the curled portion with a die, and a recurving step of stopping the die from ironing the curled portion and allowing the curled portion to recurve under its own resiliency in a direction opposite to the direction in which the end of the hollow body has been curved. The ironing step and the recurving step are repeated.
公开/授权文献
- US20110005292A1 METHOD OF FORMING CURLED PORTION 公开/授权日：2011-01-13
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