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:
Jan. 16, 2018
Filed:
Aug. 22, 2014
Mitsubishi Heavy Industries Machine Tool Co., Ltd., Ritto-shi, Shiga, JP;
Toshimasa Kikuchi, Tokyo, JP;
Kazutaka Maruyama, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO., LTD., Ritto-shi, JP;
Abstract
This gear cutting machine, which is equipped with a cutter (), a cutter spindle motor () that causes, via a crank mechanism () and a cutter spindle (), the cutter () perform a stroke operation, and a motor control unit () that controls the rotation angle of the cutter spindle motor (), is provided with a relieving spindle motor () that causes the cutter () to move in the direction of a relieving spindle via a link mechanism (four-joint link mechanism ()). The motor control unit () controls the rotation angle of the relieving spindle motor () on the basis of the rotation angle of the cutter spindle motor (). Consequently, a gear cutting machine that accurately controls the relieving operation in accordance with a desired shape, such as crowning and tapering of a gear to be cut can be provided.