Research On Product Design, Simulation And NC Machining Heterogeneous Information Integrated Technology

This dissertation research on product design, simulation, analysis and NC machining heterogeneous information integrated technologies. And the corresponding heterogeneous information integrated technologies which include product design and simulation heterogeneous information integrated model, multi-body dynamic and finite element heterogeneous integrated technology based on time-varying loading course model, finite element analysis reused technology based on integrated information model, and NC (Numerical Control) machining information integrated model based on PDM(Product Data Management) are deeply researched. The theory and method this paper put forword have been proved that it is correct and advanced by the application in low voltage electrical apparatus industry.The organization structure of full text is as follows:In chapter 1, a history and review of the theory research and application situation of heterogeneous information integrated technologies between product design, simulation, analysis and NC machining is pointed out by the induction of correlative technique. Finally, the contents, significance and the frame of this dissertation is put forward.In chapter 2, product design and simulation heterogeneous information integrated model. This chapter first analyzed the integrated information model of products design and simulation. Then, researched technology of information integration and data transform between 3-D geometry modeling system, multi-body dynamic simulation system, FEM (finite element method) analysis system and KM (knowledge management) systems. Finally, the heterogeneous information integration for products design and simulation analysis was carried out.In chapter 3, Multi-body dynamic and finite element heterogeneous integrated technology base on time-varying loading course model. This chapter first set up a time-varying loading course model. Then used APDL (ANSYS Parametric Design Language) and macro injunction exploit the FEA system, abstract the load information from multi-body dynamic system, import the load information into the FEA system, and transform the concentrative loads to the asymmetric distributed loads. Finally, the heterogeneous integration of multi-body dynamic and finite element analysis was solved, and the co-simulation based on multi-body dynamic and finite element analysis was carried out.In chapter 4, Finite element analysis reused technology based on integrated information model. This chapter first set up the finite element simulation and analysis integrated information model and analyzed the ingredient of this model. Then, used APDL and macro injunction exploit the FEA software ANSYS. Finally, the reuse of process and information for finite element simulation and analysis was carried out through abstract and integrate the information of FEA. The method this chapter put forward can improve the efficiency of finite element simulation and analysis and has been used for products exploitation.In chapter 5, NC machining information integrated model based on PDM. This chapter first set up a NC machining information integrated model from CAD modeling, part information management, product BOM (bill of material) management, CAM management, creation of NC program, Shop Scheduling and NC database etc. Then, the integration of product digital design, Shop Scheduling, and manufacture based on PDM was carried out by integrating product configuration and part information, relating Shop Scheduling and NC information, and using serial communication method between NC systems and computers.In chapter 6, the theory and method discussed this paper put forword are applied in low voltage electrical apparatus industry. The integrated platform of product design, simulation and NC machining has been developed. The main functions and application of this integrated platform are described and presented. The application and implement result of this integrated platform have proved that the theories and the methods is steady and credible.In chapter 7, the research results of this dissertation are summarized and the direction for further research is pointed out.