| 摘要 |
A numerical control apparatus having a number of control axes is controlled to effect machining operation on a workpiece under a machining program. The method involves establishing an allowable feedrate difference setting for at least one selected control axis. A feedrate difference for the selected control axis is calculated from command data in successive blocks in the machining program for the selected control axis. A deceleration for the selected control axis is calculated from the allowable feedrate difference setting and the calculated feedrate difference. The feedrate difference is held within the allowable feedrate difference setting at a block-to-block junction based on the calculated deceleration.
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