Drill

Details Drill Drill

1999-03-08

2000-05-23

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With product handling or receiving means

175415, 175418, 408144, 408226, B23B 5102, E21B 1036

Patent

active

060659084

ABSTRACT:
A drill for forming bores in constructional components and including a tubular stem (2; 22; 32; 42) having an axially extending through-channel (3; 23; 33; 43) which opens into at least one suction opening (7; 11; 27; 37; 47), a shank (5) provided at a rear end of the stem for connecting the drill to a drilling tool (M), and a drilling head (8; 28; 38; 48) having lips (9; 29; 39; 49) and formed entirely of a cutting material and substantially butt-joined to the stem (2; 22; 32; 42) at a free front end of the stem (2; 22; 32; 42), with at least one suction opening being formed by a mouth opening of a front channel (12; 26; 36; 46) which is limited, at least partially by a material of the drilling head (8; 28; 38; 48) and a mouth surface of which, at least partially is arranged in a circumferential region of at least one of the stem (2; 22; 32; 42) and the drilling head (8; 28; 38; 48).

REFERENCES:
patent: 2802642 (1957-08-01), Feucht
patent: 4190128 (1980-02-01), Emmerich
patent: 4243113 (1981-01-01), Kleine
patent: 4515230 (1985-05-01), Means et al.
patent: 4964476 (1990-10-01), Fischer
patent: 5234294 (1993-08-01), Hoppe et al.
Machine Design, Theory and Practice, Aaron D. Deutschman et al. Macmillan Publishing Company, Inc., pp. 833-836, 1975.

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