Study On The Applications Of Computer Aided Technologies And Management Information To Ceramics Enterprises

The project of this dissertation is to design and construct the integrated CAD/CAM/CAE scheme for Tangshan Ceramics Group. The object is to realize the integration of information flow, material flow and financial flow within the group, and what we've done belongs to the group's CMIS project.Corresponding to C3P(CAD/CAM/CAE & PDM), the C3M(CAD/CAM/CAE & MIS) system is presented, which is virtually an economic C3P scheme customed to ceramics enterprises. This scheme integrates the activities of design, manufacturing and production management. On one hand, C3M seeks a kind of integration environment of all items of CAx technology and the inner data logic among them, on the other it studies the object-oriented MIS development methodology.In this thesis, the following questions are studied and discussed:(1) Through the investigation of the product design and manufacturing process in ceramics enterprises, the integrated technology of 3D CAD/CAM&RPM is introduced to ensure the design accuracy to be transmitted into the manufacturing stage well and truly. Meanwhile a concurrent R&D model of ceramics is presented under the environment of Computer Supported Cooperative Design for the improvement of design efficiency.(2) In view of the fact that medium and small enterprises are comparatively weak in finance and technology, a method is put forward that the product design information can be interactively transmitted to the BOM in MIS by means of the users' development of CAD/CAM software.(3) The Extended-OOA tools, policies and model are put forward for the analysis of large-scale MIS, and the Visual Modelor 2.0 based on Unified Modeling Language is used to develop the Ceramics Products Management Information System, which integrates the OOA, OOD and OOP. The object-oriented data model is transformed to relationship data model by means of the translation of relationship tables in OODBMS to conventionally data definition language in RDBMS.(4) System security is one of the chief problems in large-scale database design. The methodcalled "Double Bases"(manage database and system database) is presented to isolate the users from the system data, and thus the system security is guaranteed.(5) At the stage of system implementation, several formulations are presented for the evaluation of flux charge of network, which is used as the reference to select equipment of computers and network. Finally, the network planning technology in system engineering is introduced to guide the implement and construction.