System Design And Experiments Of Detection System Based On LaVIEW In Micro-electrochemical Machining

Electrochemical micro-machining(ECM) is a technology that remove materialand shape workpiece based on the principle of anodic dissolution. According tothe machining principle, material is reduced in the form of ions. ECM has manyunique advantages, such as high productivity, good surface quality, tool lossless,has nothing to do with material hardness, the workpieces without stress anddeformation after machining and can process3D complex structure etc, whichmake it play more and more important role in micro manufacturing field such asaerospace and precision instrument making. It will be a great significance tothoroughly grasp the principle of ECM, design the micro ECM system,explore theECM processing technology and do practical research on micron fine structurethrough the electrolytic machining method.For many years researchers in domestic and abord have conducted practicalapplication and research in the field of ECM and attended a lot of researchachievements. Combined the The latest development and researchachievements,The main contents of this paper are described as follows:1. A tool setting detection system based on LabVIEW technology has beendesigned to realize the rapid and accurate pinpoint between two electrodes sincethe initial gap of micro-ECM is usually only a few microns to tens of microns. Thesystem can not only efficiently complete tool setting detection in micro-ECM, butalso real-time monitor the change of processing current.2.120comparative experiments have been conducted to evaluate the erosionamount of workpiece material, the reliability, repeatability and positioningaccuracy of micro-ECM process in the conditions of wet tool setting comparedwith dry tool setting. The experimental results have shown that adopting the toolsetting detection system designed in this paper, the erosion rates of cathode andanode after120repeated wet tool setting experiments were only0.21%and0.02%,the positioning accuracy and repeatability can completely meet the requirementsof tool setting in micro-ECM, and greatly improve the efficiency of themicro-ECM.3.Carry out the experiments of micro-hole on the digital microelectrochemical machining system according to the theory such as the Faraday’s law, current efficiency, the double ionization layer theory of the metal/solutioninterface, etc.4.According to groups of comparison experiments, analysis the electrolytecomposition such as electrolyte composition, machining voltage, the way offlushing, feed rate, nature of supply and other technological factors and study theeffects of key indicators such as machining dissolved locality, forming quality,machining quality and stability of micro hole of Meso-scale micro hole.