Integral impeller is widely used in engine of aeronautics and astronautics, turbine, and hydraulic pump, and so on. There are some problems in processing of integral impeller because complex space sur-faces of integral impeller need to be five-axis machined, such as difficult machining, the no means guaran-teed machining quality, etc. To solve these problems, software UG NX8. 0 is used to plan tool paths of inte-gral impeller and papers of tool paths are generated. Besides, special post-processor is set to generate NC codes based on UG Post Builder module. The research results improve application range of software UG in multi-axis machining, and provide valid references for rational planning of integral impeller machining.%整体叶轮是由复杂空间曲面构成的五轴加工零件,其广泛的应用于航空航天的发动机、汽轮机、液压泵等设备,存在加工困难、加工质量难以保证等问题. 为提高整体叶轮的加工效率和加工质量,在UG NX 8. 0环境下进行整体叶轮的刀轨规划并生成刀轨文件,并在UG Post Builder模块中设置专用的后处理器以生成NC代码. 研究结果为提高UG软件在多轴加工领域的应用,为合理规划整体叶轮加工工艺,提高叶轮的加工效率和加工精度提供了实际参考.
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