Research And Development Of Commercial CAPP System Based On 3D CAD

The application of 3D CAD to enterprise reaches a high level today, but the study of CAPP system based on 3D CAD just starts. This thesis makes serial fundamental researches on commercial CAPP system based on 3D CAD, and it also provides a prototype system with main functions developed according to the requirement of enterprise.The main content of this thesis are shown as follows:Analyses the requirement of enterprise based on the state that they apply CAPP to manufacturing, and describes the integral goal of the system: Putting forward the process design mode adapted to manufacturing industry in china and the blue print of digital CAPP based on tool platform, developing integrated CAPP system based on 3D CAD and founding special CAPP tool system based on 3D CAD oriented to whole set equipment, automobile and numerical control industry. It also describes the main technology targets of the system.Brings forward multilayer system structure based on COM (Component Object Model) and introduces the application of the key technologies which support this structure. This structure is classified as core layer, platform frame layer and application layer. The whole system is based on COM technology and data of child system is transmitted through the interface of COM object. In this process, XML (eXtensible Markup Language) file is the carrier that carries information and database system stores and manages data.Discusses the resolvents to the main technology problems that need to be solved during the whole process of system design. The main problems include how information store in XML file and some problems needed to be solved during the process of technics design. Develops the prototype system and describes the process of technics design of this CAPP prototype system based on 3D CAD. To the process of technics design of the prototype system, introduces the design of machining process and the design of assembly process.