Micro machining with continuous electrolytic free jet
Micro machining with continuous electrolytic free jet
复制标题
DOI：
10.1016/j.precisioneng.2012.05.003
复制
发表时间：
2012-10-01
影响因子：
3.6
通讯作者：
Schubert, Andreas
中科院分区：
文献类型：
--
作者：
Hackert-Oschaetzchen, Matthias;Meichsner, Gunnar;Schubert, Andreas
电解加工是一种很有潜力的高精度微细加工方法。特别是在没有任何热或机械冲击的情况下加工金属工件以及不依赖于材料的硬度是显著的特征。在这项研究中，一个特殊的程序复杂的微几何形状和微结构表面的制造进行了研究。这将通过连续电解自由喷射（喷射电化学加工-喷射-ECM）来完成。这种技术的特点是通过射流将电流限制在有限的区域内。因此，获得了去除区域的高度局部化，这可以通过改变电流和喷嘴位置来容易地控制。应用连续直流电，与脉冲EC工艺相比，更高的溶解速率是可能的。因此，使用商业模拟软件COMSOL Multiphysics，应用时间相关的计算规则。进行实验以量化喷射-ECM过程。通过对仿真结果与实验结果的比较，发现仿真结果与实验结果吻合较好。此外，还通过实验验证了射流电解加工在点腐蚀、切削、钻削和铣削等方面的可行性。(C)2012 Elsevier Inc. All rights reserved.
Electrochemical machining (ECM) is a potential procedure for high precision micro manufacturing. Especially the machining of metallic work pieces without any thermal or mechanical impact and the independence from the material's hardness are significant features. In this study, a special procedure for the fabrication of complex microgeometries and microstructured surfaces is investigated. This will be done by help of a continuous electrolytic free jet (Jet Electrochemical Machining-Jet-ECM). Characteristic for this technology is the restriction of the electric current to a limited area by the jet. Thereby, a high localization of the removal area is obtained which can easily be controlled by changing the electric current and the nozzle position. Applying continuous direct current, higher dissolution rates compared to pulsed EC processes are possible.The machining process is at first simulated by help of the finite elements method. Therefore, the commercial simulation software COMSOL Multiphysics was used applying time-dependent calculation rules. Experiments were performed to quantify the Jet-ECM process. By comparing the simulated and the experimental results, a good coincidence has been found. Furthermore, experiments were executed to show the capabilities of possible Jet-ECM applications regarding point erosions, cutting, drilling and milling. (C) 2012 Elsevier Inc. All rights reserved.