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:
May. 24, 1994
Filed:
Sep. 03, 1992
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A cutting insert is disclosed which includes a polygonal plate-shaped insert body having two opposite faces directed in the direction of insert thickness and a plurality of peripheral faces lying between the opposite faces. The opposite faces have marginal edges with at least one of the marginal edges defining a main cutting edge. The peripheral faces intersect one another to form marginal edges with one of the marginal edges defining an auxiliary cutting edge which intersects the main cutting edge. The peripheral surface which includes the marginal edges defining the main and auxiliary cutting edges includes a rake region extending along the main and auxiliary cutting edge. This rake region is formed into a stepped formation of a plurality of sections disposed adjacent to one another to define marginal edges terminating at one ends at the main cutting edge and to be convexly shaped in such a manner that an angle defined between a respective section and one of the opposite faces which extends from the main cutting edge decreases stepwise in a direction away from the nose portion. At least one of the marginal edges of the sections has the other end extending to the marginal edge defined between the peripheral faces. Moreover, an insert cutter which employs the aforesaid insert is also disclosed.