| 摘要 |
<p>Method of preparing NC data for an NC program which is required to instruct a machine to effect machining of work into the same configuration. At least one pattern (FIG) is registered which is defined by an independent coordinate system (Xp - Yp). To machine a work into the registered pattern, shift amounts (SX1, SY1, SR1) between a machine coordinate system (Xm - Ym) and the coordinate system (Xp - Yp) by which the registered pattern is defined, together with the pattern defining name of the registered pattern, are input in order to effect coordinate transformation, thereby preparing NC data corresponding to the machine coordinate system. To machine a work into an inverted pattern (FIG') which is a mirror image of the registered pattern, inversion instructions are input together with shift amounts (SX2, SY2, SR2), and coordinate transformation is effected, thereby preparing NC data corresponding to the inverted pattern.</p> |
