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:
Mar. 02, 1993
Filed:
Mar. 25, 1992
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A rotary cutter is disclosed which includes a cutter body having an axis of rotation therethrough and a cutting insert releasably secured to a forward end of the cutter body. The cutting insert has marginal ridges defining a main cutting edge and an auxilliary cutting edge. The main cutting edge is directed radially outwardly of the cutter body while the auxiliary cutting edge is directed axially forwardly of the cutter body. The cutting insert has faces defining a first rake surface and a second rake surface. The first rake surface is disposed adjacent to the main and auxiliary cutting edges such that an axial rake angle is no less than +30.degree.. The second rake surface is disposed between the first rake surface and the auxiliary cutting edge such that an angle, defined between the second rake surface and the axis of rotation of the body as viewed in a cross-section perpendicular to the auxiliary cutting edge, is no larger than .degree.20.degree.. The second rake surface is formed such that a distance, measured in a direction parallel to the first rake surface and defined between the auxiliary cutting edge and the intersection of the first rake surface with the second rake surface, is set so as to range from 0.5 mm to 1.5 mm.