整体叶轮的几何形状结构比较复杂，应用的范围比较广，其材料不仅难加工，而且加工时容易发生变形，尺寸精度方面的要求比较高。如何实现整体叶轮加工的高精度、高效率以及高质量，始终是制造领域面临的亟需解决的技术难题。由此，论文重点从后置处理、数控加工仿真及切削参数优化等方面对整体叶轮五轴数控加工的相关技术进行了探讨与研究。主要工作内容如下： 在分析整体叶轮的几何特征、技术要求和加工工艺难点的基础上，对叶轮的数控加工工艺进行了规划，并基于UG对其进行了数控编程，生成了刀具轨迹；针对实际加工使用的双转台五轴数控机床JK30的结构形式，给出了具体的后置处理算法，重点探讨了基于UG/Post Builder的JK30型五轴数控机床后置处理的构建过程，并运用创建的后置处理文件将刀位文件转化为数控机床可以识别的NC代码；基于VERICUT环境对生成的NC代码进行了仿真加工验证并在系统中对叶轮零件进行了加工质量检查，在虚拟环境下验证了所创建的后置处理文件的正确性；研究了整体叶轮切削参数优化的方法，通过建立切削参数优化数学模型对切削参数优化原理进行了理论性研究，利用计算机辅助制造优化切削参数的方法，来设定约束条件中切削参数，实现了对叶轮数控加工程序的优化，进而使加工效率得到了提升。 利用优化后的程序在JK30五轴数控机床上加工了整体叶轮，分别使用表面粗糙度仪和三坐标测量机对叶轮加工质量进行了检测，对课题的理论研究部分进行了验证。结果表明，针对JK30型机床所构建的后置处理能够满足叶轮的加工要求，进一步验证了后置处理文件创建的正确性，同时也验证了切削参数优化方法的可行性。

The geometric structure of the integral impeller is relatively complicated, and the application range is relatively wide. The material is not only difficult to process, but also prone to deformation during processing, and the requirements for dimensional accuracy are relatively high. How to achieve high precision, high efficiency and high quality of the overall impeller machining is always a technical problem that needs to be solved in the manufacturing field. Therefore, this paper focuses on the related technologies of the five-axis NC machining of the integral impeller from the aspects of post-processing, NC machining simulation and cutting parameter optimization. The main work is as follows: On the basis of analyzing the geometric characteristics,technical requirements and machining process difficulties of the integral impeller,the NC machining process of the impeller is planned and the NC programming is carried out based on UG, the tool path is also generated;A specific post-processing algorithm is given for the structural form of the double-turn five-axis CNC machine tool JK30 used in actual machining,the construction process of post-processing of JK30 five-axis CNC machine based on UG/Post Builder is discussed in detail, and the post-processing file is used to convert the tool position file into NC code that CNC machine tool can recognize;Based on the VERICUT environment, the NC code generated is verified by simulation and the processing quality of impeller parts is inspected in the system, the correctness of the post-processing files created is verified in the virtual environment;The method of optimizing the cutting parameters of the Integral impeller is studied,theoretical research on cutting parameter optimization principle is done by establishing cutting parameter optimization mathematical model,using computer-aided manufacturing method to optimize cutting parameters, the cutting parameters in the constraint conditions are set, and the optimization of the impeller NC machining program is realized, and the machining efficiency is improved. Using the optimized program machine the integral impeller on JK30 five-axis NC machine tool,the surface roughness and the coordinate measuring machine were used to test the machining quality of the impeller, and the theoretical research part of the subject is verified. The results show that the post-processing of the JK30 machine tool can meet the machining requirements of the impeller, further verify the correctness of the post-processing file creation, and also verify the feasibility of the cutting parameter optimization method.