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:
Sep. 05, 2006
Filed:
May. 10, 2005
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 ball nose end mill includes a tool body and a throwaway insert mountable on the tool body. The throwaway insert includes a bottom face as a mounting face, an upper face on an opposite side from the bottom face, a side face formed between the bottom face and the upper face, and a cutting edge formed along an intersecting ridge between the upper face and the side face in a substantially arc shape such that the rotational trace of the cutting edge when the throwaway insert is attached to the tool body in use substantially forms a partial spherical surface. An undulating portion, which is formed by alternately arranged concave portions and convex portions, is provided on the upper face so as to intersect the cutting edge. At least one of the concave portions is formed as a deep-concave portion which has a greater depth than that of the others.