Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1978-06-01
1980-05-13
Dobeck, B.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318 39, 335274, G05B 1924
Patent
active
042030625
ABSTRACT:
The invention relates to an attachment for the machining by stock removal of parts to be turned, particularly such which have surface longitudinal profiles which differ from the exact circular shape and may furthermore be irregular, with the aid of a tool whose in-feed movements are brought about by an electrically contolled servo-motor, whose follow-up time is very short, so that the tool nose can follow the pattern of the desired non-circular shapes without any limitation of the cutting speed which are usual in turning.
The machine to control system comprises spindle transmitter means for providing a signal indicative of the angular position of the machine tool spindle, position transmitter means for providing a signal indicative of the relative axial position of the machine tool cutting head and a work piece rotatable by said tool spindle, control means for storing information representing desired angular and longitudinal parameters of the desired workpiece shape and including first and second inputs for receiving the signals from said position and spindle transmitters respectively and an output for actuating said motor means in dependence upon the stored information and said input signals, and an electromagnetic plunger-type coil motor connected to receive the output signal from said control means and cutting head for moving said head towards and away from the axis of the tool spindle.
REFERENCES:
patent: 3174367 (1965-03-01), Lukens
patent: 3273182 (1966-09-01), McDonald
patent: 3454799 (1969-07-01), Albinger, Jr.
patent: 3573588 (1971-04-01), Geyer et al.
patent: 3698268 (1972-10-01), Cutler
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