Cutting insert and cutter

Details Cutting insert and cutter Cutting insert and cutter

1992-09-03

1994-05-24

Kisliuk, Bruce M.

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

407113, 407 56, 407 58, B26D 112

Patent

active

053142691

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.

REFERENCES:
patent: 830778 (1906-09-01), Geer
patent: 2322578 (1943-06-01), Kutscha
patent: 3576200 (1971-04-01), Elmes
patent: 3940835 (1976-03-01), Friedline et al.
patent: 4090801 (1978-05-01), Faber
patent: 4616962 (1986-10-01), Ushijima et al.
patent: 4645384 (1987-02-01), Shimomura et al.
patent: 4681488 (1987-07-01), Markusson
patent: 4934880 (1990-06-01), Stashko
patent: 5007775 (1991-04-01), Pantzar
patent: 5020944 (1991-06-01), Pawlik
patent: 5090845 (1992-02-01), Bentjens
patent: 5145295 (1992-09-01), Satran

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