NUMERISCHE STEUERVORRICHTUNG FUER EINE FLAECHENSCHNEIDBEARBEITUNG UND VERFAHREN ZUR BEREITSTELLUNG VON BEARBEITUNGSDATEN FUER DIE FLAECHENSCHNEIDBEARBEITUNG

摘要

A numerical control apparatus having a function of cutting the interior of an area bounded by a closed curve in a workpiece and a method for preparing a machining program for the area cutting. The numerical control apparatus is capable of machining a workpiece completely as required, even if tool paths have an intersection or intersections with themselves.