Research & Development On Reused CAPP System Based On COM+ Theory

By the rapid progress of economical globalization, the more and more drastic competition in international markets and the dynamic change of market demands, the producing style in enterprise is now changing a lot from products oriented to customers oriented. Many countries try their best to do much research on new manufacturing modes such as agile manufacturing (AM),reconfigurable manufacturing system(RMS) to satisfy this transformation. It's a big impact to computer-aided process planning (CAPP). And CAPP is required to shorten its developing time,reduce its developing costs, and to increase its transplanting ability,avoid its narrow applications. reused CAPP, with bigger influence, is considered as one of those effective solutions, but research in this field hasn't been deepen. Under this situation, this dissertation clarifies the basic definition,main characteristics ,practical approach and some key techniques of reused CAPP by the research on the basic roles of process planning and the theory of computer software major. And the development and practice have been done concentrating on the process planning in a factory based on the research result. The object of this dissertation is not only to provide a practical CAPP software, more important is to give a thought, a computer- aided process planning strategy towards advanced manufacturing modes in future and the dynamic change of market environment, and a methodology of research on the basic rules of reused CAPP.The main research work in this dissertation is:1, Systematically collecting and analyzing the course of CAPP and its basic rules in main kinds and making some forecasting and viewpoints;2, Clarifying the definition of reused CAPP facing advanced manufacturing modes such as AM,RMS by analyzing their impacts on CAPP. Discussing the main function,basic structure and basic information models.3, Analyzing computer software theory COM/DCOM/COM+, providing a method to guide the development and practical route of reused CAPP;4, In detail, researching on some key techniques such as database design for process and knowledge data ,process card customization and structured storage. In the aspect of software, building up frame model of component exchange, which realizes the communication among components and platform,components and components by four protocols.5, Giving a example of reused CAPP system developing strategy based on the research above and practical situation.