Cutters – for shaping – Rotary cutting tool – Face or end mill
Patent
1981-07-31
1983-10-25
Bray, W. D.
Cutters, for shaping
Rotary cutting tool
Face or end mill
76108R, 408224, 408230, B23B 5102
Patent
active
044115636
ABSTRACT:
A cutter device for use in end milling, or profile cutting or combined end milling and profile cutting operations having an elongated tool body with an elongated flute section and an exposed end. A first plurality of cutting flutes, which are spiral shaped, are integral with and extend outwardly from the surface of the flute section. The flutes in the first pair are equidistantly spaced apart and define a first outer diameter. The first plurality of flutes extends along said surface from a point intermediate the ends of the tool body to a first end position on the exposed end. The first plurality of flutes in said first end position defines a first set of cutting blades lying in a first plane of cut for end milling. A second plurality of cutting flutes, which are spiral shaped, are integral with and extend outwardly from the surface beyond the first pair of flutes. The flutes in said second plurality are spaced apart and define a second outer diameter which is larger than said first diameter. The flutes in said pluralities are interleaved. The second plurality of flutes is usable for profile cutting and extends along said surface from said intermediate point to a second end position on said exposed end. The second plurality of flutes in said second end position defines a second set of cutting blades lying in a second plane of cut for end milling. The first plane of cut lies below said second plane of cut when the body is disposed vertically with the exposed end pointing downward.
REFERENCES:
patent: 2129417 (1938-09-01), Gase
patent: 2389909 (1945-11-01), Hafbauer
patent: 3456316 (1969-07-01), Dawson
patent: 3737245 (1973-06-01), Mater
patent: 3811163 (1974-05-01), Frederick et al.
patent: 3977807 (1976-08-01), Siddall
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