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. 28, 2015
Filed:
Oct. 28, 2010
Applicants:
Katsumi Okamura, Itami, JP;
Satoru Kukino, Itami, JP;
Tomohiro Fukaya, Itami, JP;
Inventors:
Assignee:
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23C 3/02 (2006.01);
U.S. Cl.
CPC ...
B23C 3/02 (2013.01); B23C 2222/14 (2013.01); B23C 2226/125 (2013.01);
Abstract
In a pilot hole of a workpiece made of a difficult-to-cut cast iron, a cutting tool having a leading end to which a cutting insert is attached is inserted to cut the surface of the wall of the pilot hole. At this time, the cutting tool rotates about an axis (α) and also revolves about another axis (β), so that contouring is performed on the workpiece by the tool. The cutting insert is formed of a sintered body having a CBN content of not less than 85% by volume, and the cutting insert has a thermal conductivity of not less than 100 W/(mK).