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:
Apr. 11, 2023
Filed:
Jun. 22, 2018
Osg Corporation, Toyokawa, JP;
Ryogo Kawai, Toyokawa, JP;
OSG CORPORATION, Toyokawa, JP;
Abstract
A tapered end mill includes an outer circumferential cutting edge, a flute is disposed such that a flute bottom radius defined as a distance between a flute bottom and the tool axis decreases from a shank side toward the tool tip side, the flute bottom radius linearly changes at a predetermined gradient angle in the tool axis direction, the gradient angle changes at a predetermined change point to become smaller on the tool tip side as compared to the shank side, and a gradient angle θon the tool tip side relative to the change point is equal to or larger than 0° and smaller than a taper half angle α of a cutting portion provided with the outer circumferential cutting edge, and a gradient angle θon the shank side relative to the change point is larger than the taper half angle α.