The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Dec. 10, 2004
Fumio Takeshima, Utsunomiya, JP;
Koji Satake, Kokubunji, JP;
Hideo Kurasawa, Wako, JP;
Kozo Ono, Niigata, JP;
Fumio Takeshima, Utsunomiya, JP;
Koji Satake, Kokubunji, JP;
Hideo Kurasawa, Wako, JP;
Kozo Ono, Niigata, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A method of manufacturing a cam for a camshaft, comprising the steps of continuously applying, to a billet having a volume larger by a specified volume than a final product, a plurality of cold forging steps formed of a preliminary outline upsetting, an outline drawing, a simultaneous piercing of inner and outer diameter surfaces, a press-molding forming excess amount as burrs on the inner diameter surface, a piercing of the inner diameter surface for removing the burrs from the inner diameter surface, and a simultaneous ironing of the inner and outer diameter surfaces. The final finishing (machining) of a cam (profile) surface can be eliminated, and the final product of the cam for the camshaft having a high dimensional accuracy can be provided.