GH4169涡轮盘榫槽电解拉削仿真及其试验研究  

Simulation and Experimental Study on Electrochemical Broaching of GH4169 Turbine Disk Slot

作　　者：赖建华 王石莉[1] 刘嘉[1] 朱荻[1] LAI Jianhua;WANG Shili;LIU Jia;ZHU Di(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《南京航空航天大学学报》2024年第1期44-54,共11页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：江苏省前沿引领项目(BK2022010)。

摘　　要：榫槽是航空发动机涡轮盘上的重要结构,电解拉削是实现该结构高效、低成本制造的潜在解决方案。为了掌握电解拉削加工参数对轮廓精度和表面质量的影响规律,建立了电解拉削多场耦合模型,阐明了工具阴极长度对加工间隙产物分布的影响规律,获得了优选的工具阴极长度参数。开展了平面电解拉削加工试验,探究了进给速度和加工间隙对工件表面质量和型面进出口去除量差的影响规律,确定了较优的加工参数。试验结果表明,采用优化的加工参数可以获得较好的表面质量并有效控制了型面进出口去除量差。最后,采用优化的参数开展了典型涡轮盘榫槽结构单元件的电解拉削加工试验,试件具有较好的表面质量和轮廓重复精度。The turbine disk slot is an important structure on the turbine disk of aircraft engines,and electrochemical broaching is a potential solution to achieve efficient and low-cost manufacturing of this structure.In order to study the influence of electrochemical broaching machining parameters on contour accuracy and surface quality,a multi field coupling model for electrochemical broaching is established.The influence of tool cathode length on the distribution of machining gap products is elucidated,and the preferable length parameter is obtained.Experiments on planar electrochemical broaching are conducted to explore the influence of feed speed and machining clearance on the surface quality and profile difference in import and export removal amount of the workpiece,and optimal machining parameters are determined.The experimental results indicate that using optimized processing parameters can achieve good surface quality and effectively control the difference in import and export removal amount of the profile.Finally,electrochemical broaching experiments are conducted on a single component of a typical turbine disk slot structure using optimized parameters,and the specimens exhibit good surface quality and contour repeatability accuracy.

关 键 词：涡轮盘榫槽 电解拉削 多场耦合仿真 参数优化 试验 

分 类 号：TG66[金属学及工艺—金属切削加工及机床]