Invention Grant
- Patent Title: Method of producing forged part and method of producing suspension arm for automotive vehicles
- Patent Title (中): 制造锻造件的方法及制造汽车悬臂的方法
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Application No.: US11176684Application Date: 2005-07-08
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Publication No.: US07251979B2Publication Date: 2007-08-07
- Inventor: Hideyori Sakuragi , Yoshihiro Konno , Hidenobu Kawai
- Applicant: Hideyori Sakuragi , Yoshihiro Konno , Hidenobu Kawai
- Applicant Address: JP Yokohama-shi JP Tokyo
- Assignee: Nissan Motor Co., Ltd.,Nippon Light Metal Company, Ltd.
- Current Assignee: Nissan Motor Co., Ltd.,Nippon Light Metal Company, Ltd.
- Current Assignee Address: JP Yokohama-shi JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2004-203246 20040709
- Main IPC: B21J5/08
- IPC: B21J5/08

Abstract:
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.
Public/Granted literature
- US20060005596A1 Method of producing forged part and method of producing suspension arm for automotive vehicles Public/Granted day:2006-01-12
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