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. 10, 2024
Filed:
May. 22, 2019
Osg Corporation, Toyokawa, JP;
OSG CORPORATION, Toyokawa, JP;
Abstract
A rotary cutting tool includes: a blade portion; a shank portion having a diameter larger than a diameter of the blade portion; and a tapered connecting portion connecting the blade portion and the shank portion. The shank portion includes a plurality of coolant-guide recessed grooves provided in its outer circumferential surface. Each of the coolant-guide recessed grooves has a groove depth and a groove width that is larger than the groove depth. Each of the coolant-guide recessed grooves has a groove bottom that is shaped such that the groove depth is reduced as the each of the coolant-guide recessed grooves extends from its start end toward a groove-depth regional-change position in which a tendency of change of the groove depth is changed.