Research And Development Of CAPP Database System Based On Client/server

Along with the deepening of the process of infomationization of manufacturing, the CAPP moves towards integration, intelligence and network. As the basic support of CAPP system, process-planning database is the core technology to ensure the normal running of CAPP system and the integration with other subsystems of CIMS.In this thesis, the principle of CAPP, the developments, the application status in quo, the trend of CAPP and the effects of process-planning database in CAPP system are analyzed and summarized, point to the information integration of design and manufacture and the process-planning data management, a CAPP network database system based on client/server architecture is proposed, the secondary development technology of Oracle database and UG CAD are synthesized, the CAPP part information input module and the process-planning data management system are developed in object-oriented programming language C++. The main contents are as follows:1,The CAPP system requirement is analyzed, the architecture of network database based on client/server is applied, the network setting and communication in different locality in firewall mode is realized.2,On the base of the feature modeling technology, the part information module and the characteristics of manufacturing information are analyzed, an information conversion method of design domain and manufacturing domain and a transfer pathway of part geometric information and process information are proposed , the description method of part information based on feature and the ER methods are presented, the part information model based on feature describing method is established, the program is embedded seamlessly in CAD process by DLL, and the feature information of 3D solid model is extracted and stored.3,By depth seeking and recursive calls ,the assembling structure of solid model is accessed , the database of product, part, feature and process planning are established, the information management module is developed based on products assembly tree.4,The characteristics and connotations of process data are analyzed, the variable storage structures of dynamic data and static data are studied, the manufacturing knowledge and resources database are established, the method of redefining and expanding of the manufacturing knowledge and resources database are concerned,...