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. 28, 2020
Filed:
Dec. 07, 2015
Mitsubishi Heavy Industries Machine Tool Co., Ltd., Ritto-shi, Shiga, JP;
Hideaki Arisawa, Tokyo, JP;
Abstract
The object of the present invention is to provide a grinding tool capable of continuing machining in a dry state and of being manufactured in a short time and at low cost, and a manufacturing method therefor. For said purpose, a grinding tool (-) for grinding a workpiece includes a threaded helical groove () formed on an outer circumferential surface of a cylindrical metal head portion (), ridgetop surfaces that result from the formation of the helical groove () and are formed so as to protrude with a trapezoidal cross-sectional shape, and abrasive grain surfaces () formed by winding an insulating resin rope in the helical groove () to mask the inside of the helical groove () and fixing abrasive grains on the ridgetop surfaces. A helix angle of the helical groove () with respect to an axial direction of the grinding tool (-) is set to be at least 80° and less than 90°.