The Study And Explore Of The CAPP System Of Shaft Part Based On Feature

CAPP is the abbreviation for Computer Aided Process Planning. Process planning is the first step of the preparation of the production technology, it is also the bridge which connects product design with product manufacture. The traditional process planning is difficult to be standardized, low design efficiency and goes against uniform management maintenance. By making use of the technologists experience knowledge and all kind of process datum, the system of CAPP mot only accomplishes the decision-making of process, and automatically accomphshes the process regulation, it but also automatically calculates the working-procedure dimensions, draws the working-procedure drawings selects the manufacture parameters and optimizes the process. All the excellence can design the process regulation which is better quality and coherence. The system of CAPP can well and truly, quickly, effectively recognize the model message of the part's CAD and reasonably make the decision-making of process, which is the key of the system of CAPP.According to the old-timely information input identification method: GT code, SETP exchange and so on, this system adopts the method of recognize and input the model information which is based on facing the factures of working course. By making use of the method of facing manufacture, feature-model technology and face-object technology, database technology the system is accomplished. The system accomplishes the definition of facing the manufacture course by the design method of facing manufacture; is makes user of the technology of facing object database to pack the part feature, which includes all the information from design to process, so the system can accomplish the design function of the part model. The feature packing accomplished the seamless integration of model design and process design about the function, process and information and so on.The process-making method of the system: firstly the system accomplishes the process-making about the feature, it adopts the role-making based on knowledge to determine the mother-feature's...