基于间隙阻抗的微细孔电解加工伺服控制  

Servo Control of Electrochemical Machining of Micro Holes Based on Gap Impedance

作　　者：牛献礼 孔全存[1] 刘桂礼[1] 祝福莉 NIU Xianli;KONG Quancun;LIU Guili;ZHU Fuli(Institute of Precision Measurement Technology and Instruments,School of Instrument Science and Photoelectric Engineering,Beijing University of Information Technology,Beijing 100192,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,精密测量技术与仪器研究所,北京100192

出　　处：《电加工与模具》2020年第5期31-35,共5页Electromachining & Mould

基　　金：国家自然科学基金面上项目(51675054,51775302);北京市教委科技发展计划面上项目(KM201711232005)。

摘　　要：为提高直径在100~200μm微细孔的电解加工效率,从间隙控制的角度出发,采用侧壁绝缘电极、高压中空冲液和高频脉冲电源的加工工艺下,建立微细孔加工模型,提出了基于间隙阻抗的微细孔电解加工的伺服控制方法,并对比恒速进给模型、平均电压电流的伺服控制方法,对微细孔的电解加工间隙进行控制。实验表明,基于间隙阻抗的微细孔模型伺服控制方法加工时间短、加工效率高,所得孔的出、入口尺寸小。In order to improve the efficiency of electrochemical machining of micro holes with a diameter of 100~200μm,the article established a micro-hole machining model and put forward a servo control method of electrochemical machining of micro holes based on gap impedance using the machining technology of sidewall insulated electrodes,high-voltage hollow flushing fluid and high-frequency pulse power supply from the perspective of gap control.Simultaneously,the servo control method of the constant speed feed model and the average voltage and current are compared to control the electrochemical machining gap of micro holes.The experiment results showed that the micro-hole model servo control method based on gap impedance has short processing time and high processing efficiency,and the machined hole has a small inlet and outlet size.

关 键 词：电解加工 微细孔 侧壁绝缘中空电极 间隙阻抗 伺服控制 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]