中文摘要：

为提高叶栅通道加工质量，针对径向进给的电解加工方式，分析了通道可加工性问题，通过通道模型离散化处理，得到了加工边界曲面；讨论了进给角度与加工余量均匀性的影响，确定了合理的进给方向。在此基础上对阴极侧面轮廓和端面型面进行了设计，并制备了加工所需的工具阴极，利用自行研制的整体叶盘电解加工平台开展了工艺实验。结果表明：加工出的通道试件轮毂成形精度高，叶根部位加工质量好，叶盆、叶背余量分布均匀一致，能够满足后续叶片精加工要求。

英文摘要：

In order to improve the processing quality of cascade channel, a method of ECM with cathode radial feed was proposed. The machinability of the cascade channel was analyzed, boundary surfaces of the channel which can be processed were acquired by the data processing on the cascade channel model, the impact of different machining angles on the channel surface margin was analyzed to determine the reasonable feed direction. The side profile and end surface of cathode were designed on the basis of model analysis, the tool cathode was prepared subsequently. To verify the correctness of the cathode design proposed, the experimental investigations were carried out and the results reveal that the wheel hub can be machined with good accuracy, the processing quality in the blade root is improved, the inargin distribution of channel surfaces is uniformed to conform the requirements of subsequent finishing.