Drill changing device

Details Drill changing device Drill changing device

1975-01-10

1976-08-10

Simpson, Othell M.

Cutting by use of rotating axially moving tool

Miscellaneous

Drill guide

29 26A, 29568, 211 69, 279 41R, 408 31, B23Q 3157

Patent

active

039738639

ABSTRACT:
This invention provides a drill changing device for a drilling machine in which a collar is provided on the shank of a drill at a predetermined location relative to the tip of the drill, the collar being frictionally gripped by a split sleeve so that the shank projects outwardly from the sleeve, the sleeve being slidable relative to a fixed support and normally biased against a shoulder on the support, allowing overtravel when the collet of a drilling machine engages the collar and receives the shank. The tip of the drill is at a predetermined position relative to the collet when the collet engages the collar so that the drill will effect proper penetration of the workpiece in a drilling operation.

REFERENCES:
patent: 2883890 (1959-04-01), Fink et al.
patent: 2931516 (1960-04-01), Sharp
patent: 3073024 (1963-01-01), Hutchens et al.
patent: 3171327 (1965-03-01), Williamson
patent: 3188736 (1965-06-01), Brainard et al.
patent: 3191260 (1965-06-01), Jorgensen
patent: 3604565 (1971-09-01), Freeman
patent: 3790182 (1974-02-01), Shuman

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