Control device for industrial machine

Details Control device for industrial machine Control device for industrial machine

1989-09-15

1991-02-12

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318573, 318571, 36447415, G05B 1918

Patent

active

049927124

ABSTRACT:
A control device for an industrial machine comprising a numerical control device and a programmable controller, the numerical control device comprising: a data processing section essentially comprising a memory and a central processing unit, for analyzing and operating input numerical data, outputs of the data processing section being used for performing numerical control of a machine to be controlled and of rotation of a spindle of the machine; a gear ratio data memory for storing gear ratio data of gears through which a spindle motor is coupled to a spindle head holding a tool, the gear ratio data being applied to the gear ratio data memory through a bus from the programmable controller adapted to perform sequence control of the machine; and synchronous operation controller for calculating actual speed of rotation of the tool through operation using the gear ratio data and a feedback signal of the spindle motor, and performing synchronous operation control of the tool and a feed shaft.

REFERENCES:
patent: 4079235 (1978-03-01), Froyd et al.
patent: 4353018 (1982-10-01), Kohzai et al.
patent: 4879660 (1989-11-01), Asakura et al.

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