发明授权
US09149859B2 Forging method, molding device for forgings, and tripod uniform motion universal joint
有权
锻造方法，锻件成型装置，三脚架均匀运动万向节
- 专利标题： Forging method, molding device for forgings, and tripod uniform motion universal joint
- 专利标题（中）： 锻造方法，锻件成型装置，三脚架均匀运动万向节
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申请号： US13129650申请日： 2009-11-30
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公开(公告)号： US09149859B2公开(公告)日： 2015-10-06
- 发明人: Jiahua Miao , Akira Sera , Shunsuke Makino
- 申请人： Jiahua Miao , Akira Sera , Shunsuke Makino
- 申请人地址： JP Osaka
- 专利权人： NTN CORPORATION
- 当前专利权人： NTN CORPORATION
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2008-325955 20081222
- 国际申请： PCT/JP2009/070105 WO 20091130
- 国际公布： WO2010/073878 WO 20100701
- 主分类号： B21J5/02
- IPC分类号： B21J5/02 ; B21K1/76 ; F16D3/205 ; B21J9/02 ; F16D3/34
摘要：
After molding a preliminarily molded product as a material, the preliminarily molded product is put into a full-enclosed forging die so that a product is molded with the full-enclosed forging die. A shear-drop suppressing portion for suppressing thickness reduction on a boss-portion side of an outer peripheral portion of a leading end surface of each of shaft portions of the product is formed on the preliminary leading-end surface configuring a leading end surface of each of the shaft portions of the product in the preliminarily molded product. When the preliminarily molded product is put into the full-enclosed forging die and the product is to be molded, a relief portion is formed between the leading end surface of each of the shaft portions to be molded and a cavity of the full-enclosed forging die.
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