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探讨了用基于几何推理的参数化方法建立注塑件的型芯与型腔模型，以AUtOCADR12．0或R13，0为支撑软件，用ADS为二次开发语言。实现了由注塑件尺寸到型芯型腔尺寸的自动转换。
This paper discusses the core and cavity model of injection molded parts based on geometrical reasoning and parameterization method, and uses AUtOCADR12.0 or R13,0 as support software and ADS as secondary development language. Achieved from the size of the injection molding parts to the cavity size of the automatic conversion.