Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Work and feed motors
Patent
1981-11-16
1984-04-03
Dobeck, B.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Work and feed motors
318571, 318603, 408 11, G05B 1924
Patent
active
044410590
ABSTRACT:
A feed rate sensing system for a drilling machine or the like in which a linearly movable cutting tool-supporting block carries a rotatable tool spindle. Linear motion of the supporting block is converted to rotation of a screw and an encoder driven by the screw generates feed pulses representing feeding of the tool toward a workpiece. A proximity switch unit monitors rotation of the tool spindle and produces rotation pulses in relation thereto. A counter and latch circuit produces a digital output representing the feed rate of the tool-supporting block per revolution of the tool spindle and this digital output is converted to a voltage level representing the actual feed rate. A circuit compares such actual feed rate voltage with a desired feed rate voltage, the difference therebetween being applied to a meter.
REFERENCES:
patent: 3906324 (1975-09-01), Smith
patent: 4260986 (1981-04-01), Kobayashi et al.
patent: 4315200 (1982-02-01), Yamada et al.
patent: 4330832 (1982-05-01), Kohzai et al.
patent: 4379987 (1983-04-01), Kohzai et al.
Dobeck B.
Fuji Seiki Machine Works Ltd.
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