导通角对锥形孔电解加工精度的影响研究  

Research on the Influence of Conduction Angle on ECM Accuracy of Taper Hole

作　　者：谷民凯 赵建社[1] 王轶禹 杨柳柳 纪涛 GU Minkai;ZHAO Jianshe;WANG Yiyu;YANG Liuliu;JI Tao(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《电加工与模具》2020年第6期36-41,共6页Electromachining & Mould

摘　　要：航空发动机燃油喷嘴的喷孔多采用锥形孔结构设计,而电解加工在锥形孔加工方面具有显著优势。为研究导通角对锥形孔电解加工精度的影响,建立了锥形孔振动进给电解加工数学模型,对锥形孔电解成形过程进行了仿真,并开展了锥形孔电解加工工艺试验,研究了导通角大小和分布对锥形孔电解加工精度的影响规律。结果表明,在振动进给电解加工过程中,减小导通角并控制前导通角小于后导通角,可使电化学反应趋于发生在阴极逐渐远离工件的时间段,有利于实现小间隙加工,从而提高锥形孔电解加工精度。The nozzle holes of aero-engine fuel nozzle are mostly designed with a taper hole structure,and the electrochemical machining(ECM)has a significant advantage in taper holes processing.In order to study the influence of conduction angle on the ECM accuracy of taper holes,the mathematical model of vibrating feed ECM of taper hole was established to simulate the electrochemical forming process of taper hole.While the process test of ECM of taper hole was carried out,and the influence of the size and distribution of conduction angle on the ECM accuracy of taper hole was studied.The results showed that in the process of vibrating feed ECM,reducing the conduction angle and controlling the front conduction angle less than back conduction angle,can make the electrochemical reaction tend to occur in the period when the cathode moves away from the workpiece,which is beneficial to achieve small clearance machining and improve the ECM accuracy of tapered holes.

关 键 词：锥形孔 电解加工 导通角 加工精度 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]