GEOMETRY SIMULATION OF EDM-NC MACHINING BASED ON BLENDING OCTREE MODEL

摘要

The data structure of blending octree model is introduced into geometry simulation algorithm of EDM-NC machining in this paper firstly, and the useful algorithm to compensate the electrode spoilage is put forward. At the same time, the discharge gap is taken into account in the machining simulation process. Then the method used in converting CSG model or B-rep model of part to corresponded blending octree data structure is described, and by means of blending octree model the geometry simulation process is implemented. Finally, the feasibility and validity of this algorithm proposed in this paper is validated through geometry simulation of machining one part.