Title: Effects of the condition of the tubular electrode on hole size and shape in micro deep hole electrical discharge machining

Authors: R. Balasubramaniam; Prabhat Ranjan; Vivek J. Borole; E. Kandaswamy; V.K. Suri

Addresses: Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India. ' Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India. ' Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India. ' Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India. ' Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

Abstract: An attempt has been made to find out the effects of the electrode condition on the micro drilled deep holes with electrical discharge machining process. With optimised machining parameters for copper electrode-brass work material combination, experiments were carried out with different electrode conditions viz. straight, tilted and bent electrodes. The objective was to find out the signatures of these electrode conditions on the size and shape of the hole obtained from the experimental results. Based on the results a geometrical model is constructed and presented.

Keywords: micro EDM; deep hole drilling; electrode wear; side ward sparking; electro-discharge machining; electrical discharge machining; tubular electrodes; hole size; hole shape; tilted electrodes; bent electrodes; straight electrodes.

DOI: 10.1504/IJPTECH.2012.045985

International Journal of Precision Technology, 2012 Vol.3 No.1, pp.3 - 13

Available online: 19 Mar 2012 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article