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:
Sep. 03, 2013
Filed:
Jul. 21, 2009
Nagatoshi Okabe, Yokohama, JP;
Eiji Yamashita, Chigasaki, JP;
Nagatoshi Okabe, Yokohama, JP;
Eiji Yamashita, Chigasaki, JP;
Neturen Co., Ltd., Tokyo, JP;
Abstract
A workpiece enlarging method is provided, by which an enlarged portion can stably be formed on a portion of a workpiece such as a shaft member, and a drive force required to form the enlarged portion can be reduced. The workpiece enlarging method forms the enlarged portion on the workpiece (W) by applying, with respect to the workpiece (W), alternating shear energy in a transverse direction thereof so as to suppress deformation of the workpiece (W) within an elastic limit while applying compression energy that produces compressive stress equal to or greater than an initial yield strength to increase internal energy of the workpiece (W), thereby decomposing a portion of the increased internal energy by the alternating shear energy and deforming and enlarging the enlargement intended area of the workpiece (W) with the assistance of the decomposed energy obtained by the decomposition.