Numerical control apparatus
AssigneeFanuc Corporation
InventorsHideaki Kawamura, Kentaro Fujibayashi, Morimasa Sato
Life of this patent
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Abstract
A numerical control apparatus according to the invention has a mode designating interface for deciding a control mode and an interface which receives position and velocity commands, these interfaces being interposed between the apparatus and a servo-processor. A mode for controlling the servomotor is automatically decided internally of the numerical control apparatus. Changeover is possible in which the servomotor is used as a motor for positional control or in order to control rotational velocity in the manner of a spindle motor to achieve continuous rotation.
Claims3
A numerical control apparatus for controlling a servomotor of a machine tool having a controlled axis subjected to position control or rotational-velocity control by the same servomotor, comprising:
- commanding means for forming a position command, velocity command and mode setting signal;
- first means for designating at least one of a positional control mode and a rotational-velocity control mode for the servomotor;
- and
- second means for receiving a position command signal in the positional control mode and the velocity command signal in the rotational-velocity control mode.
Dependencies are inferred from the claim text.