Cutting insert

Details Cutting insert Cutting insert

1994-07-05

1996-04-30

Hughes, S. Thomas

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407116, B23B 2722

Patent

active

055119115

ABSTRACT:
A cutting insert for metal cutting includes a body portion of a generally polygonal shape having a cutting end including a front end wall, sides, and top and bottom surfaces. The intersection of the top surface, end wall and sides forming a cutting edge. The top surface includes a cutting land of a generally concave shape about an axis longitudinally extending between the sides and sloping downwardly and inwardly from the cutting edge, a chipgroove area adjoining the cutting land and extending inwardly therefrom and disposed at a lower elevation than the cutting edge, and an upsloping chipbreaker portion adjoining the chipgroove area and the cutting land and leading to a plateau disposed at a higher elevation than the cutting edge and chipgroove area. The chipbreaker portion is configured symmetrically about the axis and includes a forwardly extending fingerlike projection on either side of and continuous with a rearwardly recessed region bisected by the axis.

REFERENCES:
patent: 4963060 (1990-10-01), Niebauer et al.
patent: 4969779 (1990-11-01), Barten
patent: 5192171 (1993-03-01), Ther et al.
patent: 5330296 (1994-07-01), Beeghly et al.
patent: 5375948 (1994-12-01), Lindstedt

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