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对由离散点描述的叶片型面进行了几何分析及曲面拟合。介绍了数控展成电解加工整体叶轮的ＣＡＤ／ＣＡＭ软件编制特点，并给出了加工实例。
Geometric analysis and surface fitting were performed on the blade profiles described by the discrete points. This paper introduces the compilation of NC / EDM CAD / CAM software for the machining of whole impeller and gives the processing examples.