Control system for the stroke limitation of a machine tool eleme

Details Control system for the stroke limitation of a machine tool eleme Control system for the stroke limitation of a machine tool eleme

1977-10-27

1981-03-17

Dobeck, B.

Electricity: motive power systems

Positional servo systems

318626, 318285, G05B 106

Patent

active

042569990

ABSTRACT:
A control system for the stroke limitation of a machine tool element in which the element is connected with the slider of a potentiometer so that the voltage on the potentiometer slider varies in a respective direction with each direction of movement of the tool element. A pair of adjustable resistors are provided which form voltage sources with voltages conforming substantially to that of the potentiometer slider at the desired points of reversal of the tool element. The slider voltage is compared with the voltage at the adjustable resistors and the tool element is reversed when the slider voltage bears a predetermined relation to the voltage with which it is compared. A selectively adjustable delay could also be provided to delay the reversing of the tool element at at least one of the limits of travel thereof.

REFERENCES:
patent: 3403310 (1968-09-01), Davidoff
patent: 3714537 (1973-01-01), Burr
patent: 3924171 (1975-12-01), Ukai et al.
patent: 3935522 (1976-01-01), Tsay
patent: 4122379 (1978-10-01), Richter et al.

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