Computer aided method for generating topological features for manual input in generating numerically controlled machining program for a workpiece

摘要

The method, associated system and associated program produce numerically controlled machining instructions for converting a workpiece (shown dashed) to a physical object. A solid model of the object and a solid model of the workpiece are provided using graphical software, and the model of the object is combined with the model of the workpiece to produce the numerical control model shown depicting volume portions of the workpiece to be removed to form the object. A plurality of topological feature types 36 - 64 are provided, and the volume portions to be removed are partitioned into a plurality of machining features, each of which is produced by a human user choosing one of the plurality of feature types and a surface of the numerical model to associate the two and define each machining feature. Tool paths for machining each of the machining features are then provided.