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:
Aug. 10, 2010
Filed:
May. 30, 2006
Satoru Kukino, Itami, JP;
Yoshihiro Kuroda, Itami, JP;
Tomohiro Fukaya, Itami, JP;
Katsumi Okamura, Itami, JP;
Satoru Kukino, Itami, JP;
Yoshihiro Kuroda, Itami, JP;
Tomohiro Fukaya, Itami, JP;
Katsumi Okamura, Itami, JP;
Sumitomo Electric Hardmetal Corp., Hyogo, JP;
Abstract
To provide a high cBN content ratio sintered body that improves fatigue life of the machined part and has a longer tool lifespan than conventional cBN sintered body tools by suppressing the production of the affected layer by machining formed on the machined surface of the workpiece to be cut and by promoting residual compression stress. That is a cBN sintered body according to the present invention is a cBN sintered body for high surface integrity machining having a cBN component of not less than 87% and not more than 99% by volume % and a thermal conductivity of 100 W/m·K or more; and the outermost surface of the cBN sintered bodyis coated with a heat resistant filmhaving a thickness of 0.5 μm to 12 μm comprising a compound of at least one element selected from 4a, 5a, 6a group elements and Al, and at least one element selected from C, N, and O.