Authors
Vyom Sharma, Aakash Tyagi, Ishan Srivastava, Mahesh Thalkar, J Ramkumar, VK Jain
Publication date
2017
Journal
Proceedings of 10th International Conference on Precision, Meso, Micro and Nano Engineering (COPEN 10)
Pages
636-641
Description
Micro tools are essential for the fabrication of miniaturized components and devices. Such devices find application in biomedical and healthcare industry, electronics industry, etc. Micro-fabrication by electrochemical dissolution is appearing to be the most promising technology in the modern age as it has various advantages over other similar processes, absence of recast layer, heat affected zone and thermal stresses in the machined object are some of them. During fabrication of micro tools by ECM process, it is essential to control the process and monitor the dimensions online. This may sometimes become cumbersome and eventually lead to reduction in the productivity. Hence there is a resilient need for an analytical model which can predict the final dimension of the workpiece for a given set of working parameters. The present work is focused upon generation of axially symmetric micro tools using wire electrochemical turning process. The complete process is simulated on Comsol Multiphysics software in order to study the distribution of current density in the flowing electrolyte and on the surface of workpiece and tool. With the help of simulation results and after making certain assumptions, a mathematical model which uses the variation in minimum inter electrode gap (IEG) to predict the final diameter of micro tool is developed. This model is verified experimentally and decent results within the error range of 2-4% are obtained. In the final part of this work two micro tools are fabricated, one on copper having diameter of 200 µm and l/d ratio of 75 and other on stainless steel with diameter of 40.27 μm and l/d ratio of 6.5
Total citations
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Scholar articles
V Sharma, A Tyagi, I Srivastava, M Thalkar… - Proceedings of 10th International Conference on …, 2017