Generating complicated surface with electrolyte jet machining
Generating complicated surface with electrolyte jet machining
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DOI：
10.1016/j.precisioneng.2006.02.004
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发表时间：
2007-01-01
影响因子：
3.6
通讯作者：
Kunieda, Masanori
中科院分区：
文献类型：
--
作者：
Natsu, Wataru;Ikeda, Tomone;Kunieda, Masanori
在电解液喷射加工(EJM)中，经由从微小喷嘴喷出的电解液在阳极工件和阴极喷嘴之间供给电解电流。由于阳极溶解，只有暴露于射流的工件材料被去除，因为电解电流被射流限制在有限的区域。本研究构建了一种可用于加工复杂三维表面的电解质喷射加工系统。该系统由XY平台、旋转轴和高速双极电源组成，所有这些都由个人计算机协同控制。开发了一种算法来获取喷嘴的扫描路径和速度，以通过叠加简单的图案来处理复杂的形状。由此获得优化的路径和速度，使得每个检查点处的叠加图案与所需图案之间的平方差之和变得最小。为了验证所开发算法的有效性，进行了仿真和实验，并对加工精度进行了分析。模拟和生成的形状与所需形状之间的良好一致性证明该算法正确地满足了目的。此外，还检查了加工条件，特别是电流密度对所生产图案的表面粗糙度的影响。明确了高电流密度不仅是减少加工时间所必需的，而且也是改善表面粗糙度所必需的。 (c) 2006 Elsevier Inc. 保留所有权利。
In the electrolyte jet machining (EJM), the electrolytic current is supplied between the anodic workpiece and the cathodic nozzle via the electrolyte which is ejected from the minute nozzle. Only the workpiece material exposed to the jet is removed due to the anodic dissolution, because the electrolytic current is restricted to the limited area by the jet. In this study, an electrolyte jet machining system which can be used to process the complicated three-dimensional surface was constructed. This system is composed of an XY stage, a rotating axis and a high-speed bipolar power supply, all of which are cooperatively controlled by a personal computer. An algorithm was developed to obtain the scanning path and speed of the nozzle to process complicated shape by superimposing simple patterns. The optimized path and speed were thus obtained so that the summation of the squared difference between the superimposed and the required patterns at every checking point becomes minimal. In order to verify the effectiveness of the developed algorithm, simulation and experiment were carried out and the machining accuracy was analyzed. The good agreement between the simulated and produced shapes with the required one proves that the algorithm meets the purpose properly. Besides, the effect of machining conditions, especially the current density on surface roughness of produced patterns was examined. It was clarified that a high current density is not only necessary to reduce machining time but also to improve the surface roughness. (c) 2006 Elsevier Inc. All rights reserved.