公开(公告)号：US20160207091A1

公开(公告)日：2016-07-21

申请号：US15024511

申请日：2014-09-02

Applicant: CHUO HATSUJO KABUSHIKI KAISHA

Inventor： Takashi GOTO ,  Shinsuke OKURA ,  Takashi YAMASHITA

IPC: B21F35/02 ,  B21F3/04

CPC classification number: B21F35/02 ,  B21F3/04

Abstract: 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.

Abstract translation: 将线形成螺旋弹簧的方法包括将线缠绕在卷绕心轴上以将线形成为圆柱形线圈形状，将线的一端夹紧成圆柱形线圈形状，将线的中间部分夹紧 夹线的一端; 并且至少沿着圆柱形线圈形状的轴线方向相对于夹持的中间位置移动所述线的被夹持的一端，由此形成具有期望形状的尾纤。