Correction apparatus for NC lathe

摘要

A correction apparatus 1 comprises a correction amount setting section 3 and a correction execution section 4 and provides in an NC lathe 100 equipped with a first tool rest 106 and a second tool rest 108 which are movable in the X-axis direction and in the Z-axis direction. The correction amount setting section 3 sets correction amounts for canceling the displacement of the second tool rest 108 in the X-axis direction caused depending on the position of the first tool rest 106 in the Z-axis direction and for canceling the displacement of the first tool rest 106 in the X-axis direction caused depending on the position of the second tool rest 108 in the Z-axis direction. The correction execution section 4 corrects movement target position data regarding the first tool rest 106 and the second tool rest 108 in the X-axis direction on the basis of the correction amounts.