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. 05, 2005
Filed:
May. 21, 2003
Nobukazu Horiike, Tsukuba, JP;
Jun Kitajima, Tsukuba, JP;
Hiroshi Shimomura, Tsukuba, JP;
Koichi Ikenaga, Moriya, JP;
Nobukazu Horiike, Tsukuba, JP;
Jun Kitajima, Tsukuba, JP;
Hiroshi Shimomura, Tsukuba, JP;
Koichi Ikenaga, Moriya, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A throwaway insert enables reduction in cutting force and improves chip separation ability without sacrificing the strength of cutting edge thereof. An upper face of the throwaway insert is provided with an undulating portion, which is formed by alternately arranged concave portions and convex portions, so as to provide a wavy shape to the cutting edge. The undulating portion comprises four concave portions, i.e., a first deep-concave portion, a first shallow-concave portion, a second deep-concave portion, and a second shallow-concave portion. The first deep-concave portion and the second deep-concave portion are located so that effective cutting region of the cutting edge is divided into three portions having lengths substantially equal to each other, and the second deep-concave portion is made deeper than the first deep-concave portion.