| 摘要 |
PROBLEM TO BE SOLVED: To obtain a numerical control device which is capable of smoothing a tool path without generating an inward-turning error in the case of a curve trajectory and, in the case of a straight trajectory, smooths the tool path in such a manner that the tool path gets on the straight trajectory.SOLUTION: A reference point group extraction section 102 extracts a plurality of command points around a correction target point from a processing program 108 in such a manner that numbers or total distances of command points to be outputted before the target point and command points to be outputted after the target point become asymmetric, and sets the plurality of extracted command points to a reference point group. A reference straight line creation section 103 calculates a reference straight line connecting a command point to be outputted first in the reference point group and a command point to be outputted finally, and calculates a vertical component average vector which is an average of vectors from the reference points down to the reference straight line. A target point correction section 104 corrects a position of the target point into a position obtained by adding the vertical component average vector to a foot of a perpendicular line from the target point down to the reference straight line. |
