带冠整体叶轮电火花加工电极及其运动轨迹同步设计方法  

Synchronous Design of Electrode and Its Feeding Path in EDM for Cowled Integral Impeller

作　　者：赵建社[1] 周学德 周旭娇 汪文峰[1] ZHAO Jian-she ZHOU Xue-de ZHOU Xu-jiao WANG Wen-feng(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics Nanjing 210016, Jiangsu, China Patent Examination Cooperation Center of the Patent Office, State Intellectual Property Office of The P.R. C Chengdu 610213, Sichuan, China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]国家知识产权局专利局专利审查协作四川中心,四川成都610213

出　　处：《兵工学报》2017年第4期744-749,共6页Acta Armamentarii

基　　金：国家国防科技工业局技术基础科研项目(B0618-052);航空科学基金项目(2011ZE52055)

摘　　要：电火花加工是带冠整体叶轮整体制造的重要工艺方法,其电极及加工运动轨迹设计直接影响加工质量和加工效率。由于带冠整体叶轮叶间流道弯扭狭窄,使得电极及其运动轨迹设计往往比较复杂。提出一种以保证电极成形面完整和最大刚度为核心的电极及其运动轨迹同步设计方法,并基于计算机辅助设计UG二次开发平台研究了该同步设计方案的实现方法。以某型带冠整体叶轮的试制加工为例进行了试验验证,结果表明该方法可显著提高设计效率,并能够满足加工精度和加工稳定性要求。Electrical discharge machining （EDM） is an important process technique to machine the cowled integral impeller, and the processing quality and efficiency are directly influenced by the design of electrode and its feeding path. The design of electrode and its feeding path is very complicated because of the narrow and twisted channel between two blades. A synchronous design method of electrode and its feeding path is put forward to get a maximum stiffness electrode with complete forming surface correspond- ing to the blade＇s surface, and its implement method is also studied based on UG software. The design ef- ficiency, machining accuracy and stability are all improved significantly. A cowled integral impeller＇s EDM experiment is verified.

关 键 词：机械制造工艺与设备 带冠整体叶轮 电火花加工 工具电极 运动轨迹 同步设计 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]