Control apparatus for a machine tool

Details Control apparatus for a machine tool Control apparatus for a machine tool

1975-10-09

1977-05-10

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318571, 5116577, G05B 1924

Patent

active

040230848

ABSTRACT:
A control apparatus for a machine tool having a tool support supporting a tool for machining a workpiece and movable relative to the workpiece through a feed screw is disclosed. When the tool support is moved to a position in the vicinity of an original position, a signal indicator generates an output signal. In response to the output signal, one of reference pulses generated in response to the relation of the feed screw is specified to define the original position. A digital switch sets a distance between the original position and a start position. The tool support is moved toward the workpiece by the distance set by the digital switch from the original position defined by the specified reference pulse.

REFERENCES:
patent: 3699720 (1972-10-01), Lenning
patent: 3840792 (1974-10-01), Yokoe
patent: 3934185 (1976-01-01), Schoonouer
patent: 3940675 (1976-02-01), Schroeder

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