STUDY ON THE INTEGRATED INTELLIGENT CAD/CAMSYSTEM FOR COLD-AND-PRECISION FORGING

摘要

Cold-and-precision forging is an important part of advancedrnmanufacturing technology. However, complexity of coldrnforging parts and long developing cycle make it difficult torndesign mould automatically. Therefore, the intelligentrnsystems which apply artificial intelligent (AI) on CAD/CAMrnbecame an important research field. In this paper, therncharacteristics of design information and its processingrnmethods are analysed, then a GC/GD-ANN-ES modelrnestablished. GC/GD, ES, and ANN sub-systems processrndifferent information, cooperating to perform design tasks. Arntypical cold forging part, Constant Velocity Joint (CVJ) InnerrnRace, is illustrated to study the structure of each sub-system.rnGC/GD sub-system applied parametric design andrnconstructive solid geometry technology to set up solid modelrnand generate shape and dimension parameter files. ES subsystemrncomprises process planning, mould design andrnelectrode manufacture knowledge bases, using rule-and-framerncombination as knowledge presentation technology, andrnblackboard reasoning as inference engine. ANN sub-systemrnhelps to deal with some complicated non-linear predictionrnproblems.