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. 06, 2016
Filed:
Mar. 14, 2014
Mitsubishi Heavy Industries Machine Tool Co., Ltd., Ritto, Shiga, JP;
Hitoshi Yoshimura, Tokyo, JP;
Hideaki Arisawa, Tokyo, JP;
Abstract
Provided are a gear machining apparatus and a gear machining method with which the surface roughness, in a tooth profile evaluation range, of the surfaces of the teeth of a gear can be improved. This gear machining apparatus () machines shapes a gear () by machining a workpiece () with a grinding wheel, and comprises: a threaded grinding wheel () that shapes a gear () by machining a workpiece (); and a disc-shaped dresser () that shapes the threaded grinding wheel () while rotating with the threaded grinding wheel () in a meshed state. A pressure angle (a) of the dresser () is designed to be dislocated such that a reference pitch circle diameter (PCD) of the gear () shaped by the threaded grinding wheel () is outside the tooth profile evaluation range of a tooth surface ().