Indexable insert drill

Details Indexable insert drill Indexable insert drill

1979-05-03

1981-07-14

Vlachos, Leonidas

Cutting by use of rotating axially moving tool

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

Pivotable tool

408199, 407114, B23B 5100

Patent

active

042783739

ABSTRACT:
An indexable insert drill particularly suited for use in machining soft metals such as aluminum or the like. The drill includes an elongated body having a drilling portion with at least one groove extending axially along a portion thereof from the drilling portion end. In one embodiment, a generally triangular cutting insert is fixedly mounted in a receiving pocket included in the groove so that in cutting presentment, the insert cutting edge extends radially of the drilling portion from an innermost end area at the drilling portion longitudinal axis to an outermost end area outwardly of the drilling portion side wall. The cutting insert is configured so that the cutting edge will have neutral lead, neutral radial rake and positive axial rake when the insert is mounted in the receiving pocket. The receiving pocket includes a back tapered side wall defining an insert retaining area for conveniently capturing a side of the cutting insert. In another embodiment, the body drilling portion includes a pair of grooves and a cutting insert associated with each in a manner such that the cutting edges are disposed diametrically across the body drilling portion in a radially and axially offset relationship. Preferably, the inserts used in both embodiment each have a pair of cutting edges which may be selectively placed in drilling presentment. When one of these cutting edges is in cutting presentment, the other is captured in and protected by the insert retaining area of the associated receiving pocket.

REFERENCES:
patent: 3027786 (1962-04-01), Severson
patent: 3816018 (1974-06-01), Hlocky
patent: 4066376 (1978-01-01), Eckle et al.
patent: 4072438 (1978-02-01), Powers
patent: 4131383 (1978-12-01), Powers
patent: 4149821 (1979-04-01), Faber

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