Application Analysis of Machining Simulation and Post-Processing of NC Turning Center

Abstract

NC machining simulation, as one of the key technology in the field of CAD/CAM, can effectively check out the interference collisions that may occur in the machining process, significantly improve the safety usage of NC machine tools, has important practical significance to prevent the occurrence of machine accidents. Based on the integrated simulation module of UG NX software, this paper established the simulation model of NC turning center and elaborated the establishing process of machining simulation system, including the creation and verification of tool path, the digital model assembly, machine driver and motion model and so on. So tool path simulation and processing simulation were achieved, and the phenomenon of over-cutting and under-cutting between the parts and the cutting tool can be discovered timely. Meanwhile, on the basis of UG/Post module, the special postprocessor for NC turning center was developed to automatically output NC program, and the generated NC program can directly enter the NC machine tool for processing without manual modification, which will improve the efficiency and quality of automatic programming of machine tools, thereby shortening production cycle and reducing processing costs. Finally, the product processing examples verify the correctness and practicability of the special post-processor and process simulation system.