Capp System Based On Knowledge Of The Electronic Assembly, Research And Development

Electronic assembly process planning, especially the PCA (Print Circuit Assembly) process planning concerns much skill and knowledge. To enhance the efficiency of process planning and to improve the condition of the process management, a knowledge-based CAPP(Computer Aided Process Planning) system was established in this paper. On the basis of analyzing the knowledge used in the course of electronic assembly process planning, an object model of knowledge and Electronic Assembly Knowledge Representation Language (EAKRL) which integrates the object class with generative rules were presented. By means of EAKRL, knowledge model of electronic assembly was built. This paper also introduced an Object-Oriented knowledge management system. Using the EAKRL, CAPP system described in this paper implemented computer aided PCA process planning, which includes the selection of the assembly method, the generation of process route, the automatically query of parameters of SMT and THT operations. This paper also carried out a research on cable assembly process, a method of generating cable connection scheme as well as a method of cable assembly process planning based on typical process plan was presented.