EFFICIENT HIGH-PRECISION MODELING OF MATERIAL REMOVAL

摘要

The invention relates to a workpiece (2) which is machined by means of material-removing machining (for example, milling) using a tool (1) of a machine tool (for example, a CNC milling machine), wherein the tool (1) is moved along a path. In the determination method according to the invention for regions of the final contour of the workpiece (2), the positions (x, y, z) valid for the machining time points of the path are supplied to a computing device (8), and the workpiece (2) is modeled by means of a Dexel model. The determination method according to the invention is characterized in that the computing device determines the effect of the tool (1) on the workpiece (2) for the specified areas only (virtual regions) (11), and does so with high spatial resolution. For regions outside the specified areas, on the other hand, either no determination of the effect takes place or a determination of the effect takes place, however, with a coarser spatial resolution. Due to the fact that, as a rule, only relatively small virtual regions (11) are specified, the computing effort remains manageable.