| 摘要 |
PROBLEM TO BE SOLVED: To provide a numerical control device which prevents an instantaneous speed projection caused by difference between acceleration time and deceleration time during acceleration/deceleration of a reference axis and a superposition axis.SOLUTION: A superposition control determines a superimposed section where any one of a reference axis and a superposition axis is accelerated and the other axis is decelerated and calculates acceleration time of the accelerated axis and deceleration time of the decelerated axis. When the calculated results are compared and the deceleration time is longer than the acceleration time, a travel speed of the accelerated/decelerated superposition axis and the limit speed of the machine are compared. When the travel speed is larger than the limit speed of the machine, movement pulse of the acceleration is excluded to hold acceleration till the next execution processing. As a result, the decelerated axis is accelerated after being sufficiently decelerated, the travel speed of the superposition axis never exceeds the limit speed of the machine during the acceleration/deceleration section. |
