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. 07, 2020
Filed:
Nov. 15, 2016
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Yusuke Matsuda, Itami, JP;
Taisuke Higashi, Itami, JP;
Satoru Kukino, Itami, JP;
Takashi Kanda, Osaka, JP;
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
A cutting tool includes a shaft portion and a plurality of edge region groups. The ridgeline between the first rake face portion and the first flank face portion constitutes a first cutting edge portion. The ridgeline between the second rake face portion and the second flank face portion constitutes a second cutting edge portion. As seen from the direction perpendicular to a plane tangent to the outer peripheral surface, in a state where the central axis overlaps a first end on the front end side of the first cutting edge portion, the inclination angle of the first cutting edge portion relative to the central axis is larger than the inclination angle of a straight line relative to the central axis, the straight line connecting the first end to a second end on the front end side of the second cutting edge portion.