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. 17, 1991
Filed:
Nov. 16, 1990
Yasutami Matsumoto, Yamato, JP;
Nippon Seiko Co., Ltd., Tokyo, JP;
Abstract
This invention provides a grinding method and a grinding machine therefor with controlled grinding force which detects the grinding force and grinding rate during operations, calculates in real time the threshold force and grinding wheel sharpness coefficient for each grinding cycle by an arithmetic operation unit, monitors the changes in sharpness of the grinding wheel, and properly changes values instructed by the grinding force commands based on the threshold force, the sharpness coefficient and the predetermined grinding rate value for controlling the feed of the grinding wheel. When the deflection of the grinding wheel shaft changes due to the changes in grinding force, the swivel angle of the grinding wheel shaft or a workpiece is adjusted to prevent the surface of the workpiece from tapering.