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:
Jul. 21, 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;
Katsumi Okamura, Itami, JP;
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Abstract
A cutting tool according to an aspect of the present disclosure includes a shank, a joint, and a cutting portion attached through the joint to the shank. The cutting portion includes a core and a surface portion. The surface portion is disposed around a central axis of the cutting portion to cover an outer circumferential surface of the core. The surface portion includes a cutting edge. The cutting edge is disposed on an outer circumferential surface of the surface portion and formed in a helical shape about the central axis. The surface portion is a composite sintered material including a hard phase formed of a plurality of diamond particles and a plurality of cubic boron nitride particles, and a binder phase forming the remainder.