TiN陶瓷超声振动辅助混粉电火花加工实验平台设计  

Design of Experimental Platform for TiN Ceramic Ultrasonic Vibration Assisted Powder Mixed EDM

作　　者：周永强 高翔 韩建庆 张勤河[1] ZHOU Yongqiang;GAO Xiang;HAN Jianqing;ZHANG Qinhe(Key Laboratory of High-efficiency and Clean Mechanical Manufacture(Shandong University),Ministry of Education,School of Mechanical Engineering,Shandong University,Shandong 250014,China)

机构地区：[1]山东大学机械工程学院,高效洁净机械制造教育部重点实验室,山东济南250014

出　　处：《电加工与模具》2023年第5期54-58,共5页Electromachining & Mould

摘　　要：氮化钛陶瓷材料广泛应用于航空航天行业。由于传统机械加工氮化钛存在刀具损耗现象、常规电火花加工陶瓷材料的效率低,提出了超声振动辅助混粉电火花加工氮化钛的方法,并搭建实验平台验证其可行性。首先,利用ABAQUS有限元分析软件对超声振动系统进行模态分析,并利用振幅测量仪和阻抗分析仪对超声主轴进行性能测试;接着,利用Fluent流仿真软件对混粉颗粒循环系统进行油箱流场仿真分析;最后,分别采用超声振动辅助混粉电火花加工、普通电火花加工、超声振动辅助电火花加工及混粉电火花加工四种方式加工盲孔并进行对比试验。结果表明:超声振动辅助混粉电火花加工氧化钛的表面粗糙度最低、材料去除率最高、加工表面质量得到改善。Titanium nitride(TiN)ceramic materials are widely used in the aerospace industry because of their high strength and other excellent properties.The traditional machining method has the phenomenon of tool loss,and the efficiency of conventional electrical discharge machining ceramic materials is low.Therefore,the ultrasonic vibration-assisted powder-mixed electrical discharge machining(UV-PMEDM)method for TiN machining is proposed,and an experimental platform is built to verify its feasibility.The modal analysis of the ultrasonic vibration system is carried out by using ABAQUS simulation software,and the performance test of the ultrasonic spindle is completed by using amplitude measuring instrument and impedance analyzer.Fluent software was used to simulate and analyze the flow field in the fuel tank of the powder mixing particle circulation system.The comparative tests of four kinds of machining blind holes were carried out,including UV-PMEDM,EDM,UV-EDM,and PMEDM.The results show that UV-PMEDM has the lowest roughness,the highest material removal rate,and the machined surface quality is improved.

关 键 词：氮化钛陶瓷 混粉电火花加工 超声振动 平台设计 仿真分析 

分 类 号：TG669[金属学及工艺—金属切削加工及机床]