| 摘要 |
<p>PURPOSE:To reduce the block of NC data outputted in a machining program for roughing in region cutting and shorten roughing time. CONSTITUTION:At the cutting end point 3 of machined material 1, a further commanded one depth part is cut in the axial direction of a cutting tool 2 to perform region cutting reversely toward a cutting start point 4 from the cutting end point 3. The block of outputted NC data can be thereby reduced, and roughing time can be shortened because of eliminating NC data for performing rapid traverse movement from the cutting end point 3 to the cutting start point 4.</p> |
