| 摘要 |
<p>Method of preparing NC data of a composite curved surface (10) obtained by synthesizing at least two three-dimensional curved surfaces (11, 12). The preparation thereof is as follows: the NC data are prepared by inputting not only the data that specify the respective curved surfaces (11, 12) but also inputting data that specify cut path patterns (radial linear pattern 21, parallel linear pattern 22) of the curved surfaces; points are discretely determined from cut starting points (Pi) of a curved surface (11) up to boundary points (Ri) relative to another curved surface (12) along the radial cut path pattern (21) that is set on the curved surface (11), and then the points are discretely determined on the other curved surface along the parallel and linear cut path pattern (22) specified for the other curved surface (12); thereafter, the points are picked up to be discretely determined along the cut path patterns on the curved surfaces, and are continuously followed to prepare NC data that form a composite curved surface.</p> |
