METHOD AND DEVICE FOR CONTROLLING MECHANICAL DEVICE BY NUMERICAL CONTROL

摘要

PROBLEM TO BE SOLVED: To highly efficiently operate a driving means without causing any overheat and without decelerating command sending speed even when the driving means is continuously operated at high speed with acceleration/deceleration such as fast forwarding by preparing temperature data by predictively operating the temperature of the driving means, and comparing these data with the previously set temperature data of the driving means. ;SOLUTION: A temperature data operation part 21 predictively operates the temperature of the driving means with the passage of time by comparing current data or torque command data extracted from a servo control part 15 with the relation between current data or torque command data extracted from a data storage part 19 and the temperature of the driving means. While receiving the operated result from the temperature data operation part 19, an acceleration/deceleration time constant operation part 23 operates the acceleration/ deceleration time constant of feeding shaft corresponding to the state at every time from the relation between the inclination of temperature curve stored in the data storage part 19 and the acceleration/deceleration time constant and outputs it. An acceleration/deceleration time constant command part 25 commands this acceleration/deceleration time constant of feeding shaft to a preservation/acceleration/deceleration control part 13 while matching timing with the progress of operation of a mechanical device 1.;COPYRIGHT: (C)1997,JPO