| 摘要 |
<p>External data (12) consisting of the interface data of an object (1) is divided by octtree dividing into rectangular parallelepiped cells (13) having interface planes crossing perpendicularly, and V-CAD data that classify the divided cells into internal cells (13a) located inside the object and interface cells (13b) including interface surfaces is prepared, and die data and die machining data for producing the object (1) are generated from data on reference surfaces at least partially contacting the object (1)and the V-CAD data. Die machining data is used to select a plurality of machining tools (2) in the order of decreasing size according to the sizes of internal cells (13a) in a machining unit to move the machining tools (2) within the planes and the thickness directions of the die to thereby machine the die. Therefore, V-CAD data used can simplify a die-machining NC machining program and significantly reduce a die machining time.</p> |
