中文摘要：

电解加工技术是航空发动机整体叶盘零件主流加工技术之一。电解加工中阴极进给方向与阳极型面法线方向夹角的均匀性是影响加工精度的重要因素。为进一步提升整体叶盘型面电解加工精度，针对工具阴极进给方向优化设计问题开展研究。通过研究阴极进给方向与阳极型面法线方向夹角变化对电解加工极间间隙的影响，在分析传统进给方向存在的不足基础上，提出一种叶盘电解加工阴极进给方向优化方法。该方法以阴极进给方向与叶片型面法线方向夹角集合中的最大夹角值为评判指标，以评判指标值最小为判优准则。为验证优化方法的有效性，开展整体叶盘电解加工中阴极进给方向优化设计，采用黄金分割法获得了优化进给方向的最优解。与传统进给方向相比，优化后的进给方向显著提升了夹角分布的均匀性。开展传统进给方向与优化进给方向的加工比较试验以及多叶片扇段加工试验，试验结果表明采用优化进给方向可显著提高加工精度。

英文摘要：

Electrochemical machining （ECM） is used as one of the main technologies to produce blisk. The uniformity of the angles between feeding and workpiece surface normal directions is a critical factor to affect the ECM process accuracy. In order to improve the ECM accuracy of turbine blisk, the method to optimize the feeding direction in ECM is studied. Gaps between the cathodes and anode are influenced by the uniformity of angles which between feeding and workpiece surface normal directions. On the base of analyzing the disadvantage of traditional feeding direction, a new method to optimize the feeding direction of ECM blisk is presented. The optimization method is based on the evaluation parameter which refers to the maximum angle between feeding and workpiece surface normal direction. The optimization method is to minimize the evaluation parameter. In order to verify the validity of the optimization method, the optimization of feeding direction design in ECM blisk is carried. The rational feeding direction is obtained by using the golden section method. The experimental investigations are carried out to evaluate the rationality of the feeding direction. The results reveal that the accuracy ofblisk is enhanced with this optimal feed direction.