Control system for stopping spindle at predetermined rotational

Details Control system for stopping spindle at predetermined rotational Control system for stopping spindle at predetermined rotational

1980-12-15

1983-09-06

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318592, G05B 106

Patent

active

044031815

ABSTRACT:
A system for stopping a spindle, which is provided in a machine tool, in such a manner that a specified point on the spindle is stopped at a predetermined rotational position. The system includes device for detecting the direction of spindle rotation. When the spindle arrives at a region where it is to be controlled in order to stop at the predetermined rotational position, a position deviation signal is applied as the input signal of a speed control loop for controlling the rotation of the spindle. This signal turns the specified point on the spindle to the predetermined rotational position, in the same direction in which the spindle is rotating, on the basis of the direction signal from the detecting means. That is, the specified point on the spindle is rotated to the predetermined rotational position in a direction which is the same as the direction of rotation during tool operation.

REFERENCES:
patent: 3569815 (1971-03-01), McNaughton
patent: 3663880 (1972-05-01), Gabor
patent: 3824891 (1974-07-01), Carroll
patent: 4025839 (1977-05-01), Muary
patent: 4117386 (1978-09-01), Cohen et al.
patent: 4138633 (1979-02-01), Narikiyo et al.
patent: 4263539 (1981-04-01), Barton
patent: 4345192 (1982-06-01), Kohzai et al.

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