An electrochemical machining method for aeroengine blades based on four-directional synchronous feeding of cathode tools

作     者：Jia LIU Libing HUI Dongqian JIA Yan LIU Di ZHU Jia LIU;Libing HUI;Dongqian JIA;Yan LIU;Di ZHU

作者机构：College of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第9期

页      面：380-391页

核心收录：

学科分类：08[工学] 082503[工学-航空宇航制造工程] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Natural Science Foundation of China(Grant 52075253) the National Science and Technology Major Project(Grant 2017-VII-0004-0097) 

主　　题：Aero-engine Blade Dynamic simulation Electrochemical machining Experiment 

摘      要：Blades are critical components of modern *** the many characteristic structures of the blade,the leading/trailing edges are key structures that have the greatest influence on the aerodynamic effect and power conversion of the *** machining(ECM)is regarded as one of the most important techniques in blade manufacturing due to its process characteristics of high material removal rates,virtually no tool wear,and no areas of thermal or mechanical damage to the workpiece rim ***,an ECM method based on the fourdirectional synchronous feeding of four cathode tools is proposed to improve the machining accuracy of the leading and trailing edges of the *** blade ECM using this method,four cathode tools feed toward the basin/back surfaces and leading/trailing edges *** dynamic processing simulation and flow field simulation results of the ECM process show that the proposed method eliminates the sharp changes in the electric field and electrolyte flow field at the leading and trailing edges seen in traditional machining ***,the electric field and flow field stability of the leading and trailing edges at the final stage of machining is greatly *** comparison of the conventional and proposed ECM methods showed that four-directional synchronous feeding results in improved profile accuracy over repeated machining processes and good surface quality.