电化学放电铣削加工工艺研究
发布时间:2018-04-16 09:05
本文选题:电化学放电加工 + 铣削加工 ; 参考:《南京航空航天大学》2017年硕士论文
【摘要】:绝缘脆硬材料由于具有绝缘性、耐磨损、耐腐蚀等优良特性,在生命科学、半导体等行业发挥着重要作用。电化学放电加工(ECDM)作为一种加工脆硬材料的方法被越来越多的研究者所关注。本文采用钨丝电极对高硼玻璃进行电化学放电铣削加工工艺研究,开展的主要研究工作和获取的成果如下:(1)介绍了电化学放电加工机理和氢气膜等效电路模型,搭建了铣削实验平台,完成了铣削加工软件的编写。(2)选择合适的工具电极与加工液对高硼玻璃进行了微槽加工。采用直流电源通过正交实验法研究了电压、溶液浓度、进给速度对于微槽宽度的影响。采用脉冲电源研究了脉冲占空比对于微槽宽度的影响。(3)介绍了电化学放电铣削原理,在不同的电极重叠率、电压、溶液浓度条件下进行平面铣削加工实验,研究了各种工艺参数对于表面粗糙度的影响。(4)分析了电化学放电加工过程中存在的误差及形成原因,进行铣削加工的补偿试验,提高了工件的加工精度。进行三维结构的铣削实验,证明电化学放电铣削加工有潜力运用于实际生产中。
[Abstract]:Insulating brittle and hard materials play an important role in life science, semiconductor and other industries because of their excellent properties such as insulation, wear resistance and corrosion resistance.Electrochemical discharge Machining (ECDM) as a method of processing brittle hard materials has been paid more and more attention by researchers.The electrochemical discharge milling process of high boron glass with tungsten wire electrode is studied in this paper. The main research work and the obtained results are as follows: 1) the mechanism of electrochemical discharge machining and the equivalent circuit model of hydrogen film are introduced.The milling experiment platform was set up, and the milling software was compiled. (2) the suitable tool electrode and the machining fluid were selected to process the high boron glass microgrooves.The effects of voltage, solution concentration and feed speed on the width of the microgroove were studied by orthogonal experiment with DC power supply.The influence of pulse duty cycle on the width of microgroove is studied by using pulse power supply. The principle of electrochemical discharge milling is introduced. The experiments of planar milling are carried out under different electrode overlap rate, voltage and solution concentration.The influence of various process parameters on surface roughness is studied. The error and its formation in electrochemical discharge machining are analyzed, and the compensation test of milling is carried out to improve the machining accuracy of the workpiece.The experiments of 3D milling show that electrochemical discharge milling has the potential to be used in practical production.
【学位授予单位】:南京航空航天大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TG662
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