发明授权
- 专利标题: Method of producing forged part and method of producing suspension arm for automotive vehicles
- 专利标题(中): 制造锻造件的方法及制造汽车悬臂的方法
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申请号: US11176684申请日: 2005-07-08
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公开(公告)号: US07251979B2公开(公告)日: 2007-08-07
- 发明人: Hideyori Sakuragi , Yoshihiro Konno , Hidenobu Kawai
- 申请人: Hideyori Sakuragi , Yoshihiro Konno , Hidenobu Kawai
- 申请人地址: JP Yokohama-shi JP Tokyo
- 专利权人: Nissan Motor Co., Ltd.,Nippon Light Metal Company, Ltd.
- 当前专利权人: Nissan Motor Co., Ltd.,Nippon Light Metal Company, Ltd.
- 当前专利权人地址: JP Yokohama-shi JP Tokyo
- 代理机构: Foley & Lardner LLP
- 优先权: JP2004-203246 20040709
- 主分类号: B21J5/08
- IPC分类号: B21J5/08
摘要:
A method of producing a forged part includes holding a material by a jig, upsetting the material, held by the jig, to a predetermined length by a pair of upsetting dies disposed on both ends of the material, while pressing the upsetting dies on the material, so as to produce large-diameter portions at the respective axial ends of the material. Next, a bending operation and a forging operation are made to the upset material, in that order. When forging, a direction, in which the material is forged, is set, so that a burr generated on the material by upsetting is included in a burr generated on the material by forging. Next, a finish-machining operation is made to the forged material to remove the burr left on the outer periphery of the material after forging. Thereafter, the finish-machined material is drilled to form bush-mounting holes in the large-diameter portions.
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