Gear cutting – milling – or planing – Milling – Process
Patent
1996-08-21
1999-03-02
Howell, Daniel W.
Gear cutting, milling, or planing
Milling
Process
407113, 407 42, B23C 502
Patent
active
058761608
ABSTRACT:
The cutting inserts of this patent are provided with positive cutting geometry and are especially adapted for service in face milling and shoulder milling raw castings and other hard-shelled workpieces by providing a cutting edge land which varies in width along the cut from narrowest at the bottom of the main cutting edge to broadest where the cutting edge meets the hard surface of the workpiece. In double-ended cutting edges, i.e., where the cutting edge is designed to cut equally in cutters of either hand of rotation, the maximum land width occurs at cutting edge midpoint and tapers to minimum width at each end. The surface of the land may also desirably be warped, twisting from radially positive rake at the bottom of the main cutting edge to neutral or even negative radial rake where the cutting edge meets the hard surface of the workpiece.
REFERENCES:
patent: 3786541 (1974-01-01), Lundgren
patent: 3882580 (1975-05-01), Lundgren
patent: 5032049 (1991-07-01), Hessman et al.
patent: 5078550 (1992-01-01), Satran et al.
patent: 5199827 (1993-04-01), Pantzar
patent: 5244318 (1993-09-01), Arae et al.
patent: 5544984 (1996-08-01), Pantzar
Howell Daniel W.
Ingersoll Cutting Tool Company
Williams Mark
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