Self-colleting drill

Details Self-colleting drill Self-colleting drill

1980-01-09

1981-09-01

Vlachos, Leonidas

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

408 10, 408 51, 408112, B23B 4514

Patent

active

042869021

ABSTRACT:
A self-colleting drill that includes a pair of parallel output shafts arranged to drive a pair of drill bits and means for retaining the work piece against a foot member of the drill so that the holes will be spaced therein in accordance with the spacing between the drill bits or shafts. A plurality of drill guide members having varying hole spacings therein, provide a variety of center distances between the shafts that extend therethrough. A plurality of foot members are also provided that have mating hole spacings to the drill bushings providing for the variable drill bit spacing.

REFERENCES:
patent: 1521158 (1924-12-01), King
patent: 2706918 (1955-04-01), Blatt
patent: 2909949 (1959-10-01), Winslow
patent: 2963927 (1960-12-01), Hanger

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