Drill speeder for machine tools

Details Drill speeder for machine tools Drill speeder for machine tools

1977-04-01

1978-03-07

Vlachos, Leonidas

Cutting by use of rotating axially moving tool

With signal, indicator, illuminator or optical means

408 6, 408 9, 408124, 29568, 511345R, 90 11A, 173163, 279 1A, B23B 4706, B23B 4900

Patent

active

040777367

ABSTRACT:
An electric motor driven drill and a battery therefor are mounted within a toolholder for a machine tool. The battery is coupled to the motor through a centrifugal switch which closes when the toolholder is rotated about its axis above a predetermined speed and opens when the rotary speed of the toolholder falls below the predetermined speed. The toolholder is mounted in the spindle of a machine tool and the drill turns on when the spindle is rotated and turns off when the spindle stops, the rotary speed of the spindle being added to the rotary speed of the drill in one direction of spindle rotation and subtracted from the rotary speed of the drill in the opposite direction of spindle rotation.

REFERENCES:
patent: 2357109 (1944-08-01), Heath
patent: 3687467 (1972-08-01), Kosmowski
patent: 3752595 (1973-08-01), Woythal et al.
patent: 3803981 (1974-04-01), Allgeyer

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