Research And Development On Process Design Sub-System Of CAPP Tool System

The contest of the world mainly focuses on the contest of the whole strength of the country. Under the tide of the new century global economy integration, manufacturing is facing great challenge and opportunity. Process plan is an important component of the enterprise management. The quality of process plan should directly affect the level of the production and development of enterprise. In order to enhance its competitive ability in the market, enterprise must change the traditional method of manual process plan and management. After investigated and analyzed the development trend of manufacturing,and research status and development trend of CAPP, the theory, methods and key technologies of process design sub-system of CAPP tool system for products are studied systematically. Main research contents are followed:(1) The present status and trends of the research on manufacturing and on CAPP are reviewed, and the function of CAPP in CAD/CAE/CAPP/CAM, and the relevant contents and goals of the project are put forward.(2) Based on putting forward the object-oriented technique, the information integration of CAD/CAPP based on PDM is studied, the object-oriented information model is built. The relevant function model and architecture framework about process design of CAPP sub-system are built.(3) The application of web data-base and the technology of FTP in the Process Design sub-system is studied; The data-base designing method and the linking mode of applications and data-base are expatiated; The programming process of codes is expounded detailedly, and the using of FTP technology is explained.(4) The decision function model and inferential policy based on the multi-decision methods of CAPP tool system for products are studied. Then the theory and realization technology of the index CAPP system, the variant CAPP system based on instance inference and the Interactive-Filling-Card CAPP system are dissertated.(5) Based on the study of theory, methods and key technologies of process design sub-system of CAPP tool system for products, the process design sub-system for products is studied and developed; And applied to the process planning of screw pump, and finally the CAPP system of screw pump have been completed. Finally, a summary of the research work and the results is made and plans for future research is presented.