Formed rotary cutting tool having varying diameter and constant

Details Formed rotary cutting tool having varying diameter and constant Formed rotary cutting tool having varying diameter and constant

1999-03-09

2000-12-26

Tsai, Henry W. H.

Cutters, for shaping

Rotary cutting tool

Having peripherally spaced teeth

407 62, 82 111, 82 13, B23B 2706

Patent

active

061648779

ABSTRACT:
A formed rotary cutting tool including; a generally cylindrical body portion having (a) a plurality of flutes which are formed in the body portion to generally axially extend and which are located around the axis so as to be angularly spaced apart from each other, and (b) cutting edges which cooperate with each other to have a diameter that changes in the axial direction, so that the body portion has a desired configuration. The tool is rotated about the axis to form a groove whose configuration corresponds to the desired configuration, in a solid workpiece. Each of the cutting edges is defined by an intersection of a rake face and a flank face which has a predetermined clearance angle that is constant in the axial direction, irrespective of the change of the diameter.

REFERENCES:
patent: Re26544 (1969-03-01), Castro, Sr.
patent: 3775819 (1973-12-01), Ribich
patent: 4770567 (1988-09-01), Moriarty
patent: 5908269 (1999-06-01), Cox

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