Research & Realization On NC Machining Arrangement And Code Simulation For Developing And Integrated CAD/CAM System

The subject sources from the key project provided by the scientific and technological bureau of Guangxi.The title of the project is "Informational application demonstration project for the manufacturingindustry in Guangxi -development of the general platform system fornumerical control machine tool with the function of lathing, milling, punching and linear incision(No. 0228018G)".It is required to research and develop a suit of general integrated platform system which possesses independent copyright and suits numerical control equipment of lathing, milling, punching and linear incision. Researches on NC machining simulation and realization for an integrated CAD/CAM system have been thoroughly carried out in this thesis. The work covers:1 , Researches on tool path arrangement and generating algorithm for NC machining. Combined with self-developing CAD/CAM system, the algorithms and its applicability for generating the tool paths have been discussed. The researches focus on the plane contour machining, plane area machining and the surface machining.2, Entire design for the integrated CAD/CAM system. The design of whole structure and data structure for the integrated CAD/CAM system was presented according to the system's requirement and function description.3 , Researches on code simulation of NC programming system. In response to the principles of simulation and the feature of NC code, work on simulation of machining code has been carried out in the areas of NC program analysis, conversion, machine tool compensation and data interpolation.4, Generation of the tool path and the dynamic simulation of the process were implemented in the developed prototype system, for the plane contour machining and the plane area machining.The solutions to several important issues related to the simulation of NC machining in the development of integrated CAD/CAM system were achieved, these issues include Arrangement and generation of tool path, automatic generation of NC code and the visual simulation for the NC machining etc. The methods for the simulation of NC machining was implemented in the developed system, to provider approaches for the design of integrated CAD/CAM system, thus meet the requirement of development of information and integrated manufacture.