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:
Nov. 01, 2016
Filed:
Dec. 10, 2013
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Koichi Ichihara, Yokosuka, JP;
Hironobu Ishida, Yokosuka, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A work surface is ground by moving a grinding wheel, on an outer periphery of which a helical dressed groove having no intersection is formed, in a first direction being tilted with respect to a forward direction. Then, the work surface is ground by moving the grinding wheel in a second direction which is tilted with respect to a backward direction. When the grinding wheel is virtually moved for grinding in the forward direction, an extending direction of a virtual grinding trace formed by the dressed groove transcribed and the first direction are tilted in mutually opposite directions with respect to the forward direction. An absolute value of a tilt angle of the first direction is smaller than that of the extending direction of the virtual grinding trace. Rotation directions from the forward direction to the first direction and from the backward direction to the second direction are opposite.