Indexable insert drill

Details Indexable insert drill Indexable insert drill

1979-03-26

1981-05-19

Hinson, Harrison L.

Cutting by use of rotating axially moving tool

Tool-support with means to permit positioning of the tool...

408705, 408713, B23B 5100

Patent

active

042681987

ABSTRACT:
A drill having at least two indexable radially spaced inserts arranged with axially projecting cutting points to machine overlapping concentric grooves, the outermost insert machining a groove having an outside diameter equal to the diameter of the hole and the innermost insert machining a groove overlapping the center of the hole, and radial components of the cutting thrust on said inserts being in opposition and balancing each other. The cutting thrust may be balanced by the number, shape and/or the rake of the cutting edges.

REFERENCES:
patent: 3540323 (1970-11-01), Rishel
patent: 3816018 (1974-06-01), Hlocky
patent: 3963365 (1976-06-01), Shallenberger, Jr.
patent: 4124328 (1978-11-01), Hopkins
patent: 4149821 (1979-04-01), Faber

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