Improvement of Electrochemical Microdrilling Accuracy Using Helical Tool

This investigation presents using a microhelical tool as a novel solution in electrochemical microdrilling process to improve the machining accuracy and ability. Fluent CFD is adopted to analyze the flow field status in process. The inlet and outlet diameters of the microholes are 425 µm and 362 µm, respectively; the values are obtained using the conventional microsolid cylindrical tool. When the rotation speed of the helical tool is 20,000 rpm,...