The Design And Development Of Computer Aided Fixture Design System Based On SV

The research of computer aided fixture design system is very important for improving efficiency of fixture design and design quality and inheriting execellent design skill and experience, besides it is very meaningful for the development of computer aided fixture design system.The target of combination of case-based reasoning with wizard of modular fixture design of computer of aided fixture design system on SINOVATION (S V) is to change the disadvantage that labour intensive, the long design cycle and low efficiency of traditional fixture design method. The visualization of fixture design could be realized by the system, and the experience of the design, design wizard and mechanics analysis could be used by user.First of all, introducing the background and the significance of the research. Summing up the main stages of computer-aided fixture design. Analyzing the situation and the shortage of CAFD at home and abroad. It is proposed the method of combining case-based reasoning with wizard of modular fixture design of computer aided fixture design. In addition, showing the main research contents.Secondly, introducing the definition and characteristics of case-based reasoning, and recommending the feasibility and theory of case-based reasoning technology in SV-CAFD. Based on these, explaining the case-based reasoning technology in SV-CAFD case expression in detail, and including classification of fixture feature units, layered expression of case and case code; using the analytical hierarchy process(AHP) to determine the weights of features and improving the traditional nearest neighbor algorithm to increase in similarity1calculation accuracy to some extent. Finally, showing the algorithm process. Thirdly, introducing the principle of putting forward the wizard of Modularized Design in SV-CAFD basic and the general process of fixture design. Based on these, the phase of fixture design is divided into different modules, and the thought of the wizard of modular fixture design is proposed. Besides, the characteristics and process of the wizard of modular fixture design in S V-CAFD is introduced.Afterwards, machine tool fixture parts are classified in detail and parametric technology and the developing thought of parts library is explained. The structure of the parts library is classified into five parts. Besides, each part of the function of the library is illustrated and using the interfaces to explain.Finally, introducing the operation platform and development toll of the system, and analysising the characteristics of the SV-CAFD system. Based on these, explaining the basic thought of the system design and showing the structure and working process of the SV-CAFD system. Then, stating the development and realization of the system function.