| 摘要 |
<p>Region machining method by which the interior of a region (AB) is machined by moving a tool along a plurality of offset passages which are in turn offset inwardly by a predetermined space from a closed curved line (OLC) which defines the region. In this region machining method, a judgement whether the region (AR) encompassed by the closed curved line (OLC) should be or should not be divided is made, and, when it is necessary that the region be divided, the degrees of suitability for dividing of all pairs, each of which consists of two arbitrary vertexes, are determined by using evaluating functions indicating preset degrees of suitability for dividing. The region is divided by a straight line which connects a pair of two vertexes (P5, P7) having the highest degree of suitability for dividing. The divided regions (PG1, PG2) are then processed in the same manner as mentioned above. Tool passages are determined on the basis of finally-divided regions, and the region machining is carried out by moving the tool along this tool passages.</p> |
