Throw-away insert and face milling cutter

Details Throw-away insert and face milling cutter Throw-away insert and face milling cutter

1993-06-28

1995-10-03

Kisliuk, Bruce M.

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

407114, 407116, B26D 100

Patent

active

054546702

ABSTRACT:
A throw-away insert has four sets of cutting edges with high edge strength and which does not limit the amount which can be cut. An upper half portion of the insert has a set of cutting edges provided at each of two acute-angled corners of a parallelogram. The set of cutting edges includes a major cutting edge defined on one side of the parallelogram and a minor cutting edge defined on the other side and forming an angle of about 90.degree. with the major cutting edge. The lower half portion of the insert has the same structure and dimensions as the upper half portion but is configured as if the upper portion were turned over and further rotated 3.degree.-7.degree. clockwise with respect to the upper half portion. The two sets of cutting edges on the upper half portion and the two on the lower half portion constitute four sets of cutting edges in all.

REFERENCES:
patent: 4294566 (1981-10-01), Boone
patent: 4597695 (1986-07-01), Johnson
patent: 5007775 (1991-04-01), Pantzar
patent: 5067858 (1991-11-01), Cook
patent: 5096338 (1992-03-01), Takahashi
patent: 5114282 (1992-05-01), Pawlik
patent: 5135337 (1992-08-01), Adamson

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