发明申请
- 专利标题： COIL SPRING FORMING METHOD AND FORMING DEVICE
- 专利标题（中）： 线圈弹簧成形方法和成形装置
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申请号： US15024511申请日： 2014-09-02
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公开(公告)号： US20160207091A1公开(公告)日： 2016-07-21
- 发明人: Takashi GOTO , Shinsuke OKURA , Takashi YAMASHITA
- 申请人： CHUO HATSUJO KABUSHIKI KAISHA
- 优先权： JP2013-199377 20130926
- 国际申请： PCT/JP2014/073060 WO 20140902
- 主分类号： B21F35/02
- IPC分类号： B21F35/02 ; B21F3/04
摘要：
A method for forming a wire into a coil spring includes winding the wire around a coiling mandrel to form the wire into a cylindrical coil shape, clamping one end of the wire formed into the cylindrical coil shape, clamping an intermediate portion of the wire spaced from the clamped one end of the wire; and moving the clamped one end of the wire relative to the clamped intermediate position at least in an axis direction of the cylindrical coil shape, whereby a pigtail having a desired shape is formed.
公开/授权文献
- US10022778B2 Coil spring forming method and forming device 公开/授权日：2018-07-17
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