发明申请
- 专利标题: TRIPOD TYPE CONSTANT-VELOCITY UNIVERSAL JOINT AND METHOD FOR PRODUCING THE SAME
- 专利标题(中): 三重类型恒定速度通用接头及其制造方法
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申请号: US13259504申请日: 2010-04-02
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公开(公告)号: US20120021842A1公开(公告)日: 2012-01-26
- 发明人: Junichi Izumino , Kenji Konaka , Hiroshi Murakami , Akira Sera , Jiahua Miao , Shunsuke Makino
- 申请人: Junichi Izumino , Kenji Konaka , Hiroshi Murakami , Akira Sera , Jiahua Miao , Shunsuke Makino
- 优先权: JP2009-102144 20090420
- 国际申请: PCT/JP2010/056070 WO 20100402
- 主分类号: F16D3/205
- IPC分类号: F16D3/205 ; B21K1/14
摘要:
Provided is a manufacturing method for a tripod type constant velocity universal joint including: an outer joint member having an inner peripheral surface provided with: three track grooves extending in an axial direction; and roller-guide surfaces extending in the axial direction on both sides of each of the three track grooves; a tripod member including three journals each projected into a radial direction; and a roller unit supported rotatably around each of the three journals of the tripod member and inserted rollably in each of the three track grooves of the outer joint member, the manufacturing method including, when forging a raw-shaped material corresponding to each of the three journals into a journal shape with use of a molding surface of a die, under a state in which a relief portion is provided on a raw-shaped-material-leading-end-side of the die, molding an outer peripheral surface of the raw-shaped material into a projected round shape with use of a tapered surface formed on the molding surface with which the outer peripheral surface of the raw-shaped material is held in contact and a recessed round surface formed between the molding surface and the tapered surface.