Table of Contents
International Journal of Manufacturing Engineering
Volume 2014 (2014), Article ID 208293, 12 pages
http://dx.doi.org/10.1155/2014/208293
Research Article

Observation of Drilling Burr and Finding out the Condition for Minimum Burr Formation

Department of Mechanical Engineering, Kalyani Government Engineering College, Kalyani, West Bengal 741235, India

Received 14 November 2013; Revised 30 January 2014; Accepted 13 February 2014; Published 24 March 2014

Academic Editor: Godfrey Onwubolu

Copyright © 2014 Nripen Mondal et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Suppression or elimination of burr formation at the exit edge of the workpiece during drilling is essential to make quality products. In this work, low alloy steel specimens have been drilled to observe burr height under different machining conditions. Taper shank, uncoated 14 mm diameter HSS twist drills are used in these experiments. Dry environment is maintained in experiment set I. Water is applied as cutting fluid in experiment set II. In the next four sets of experiments, the effect of providing back-up support material and exit edge bevel is observed on formation of burr at the exit edge of specimens under dry and wet conditions. It is revealed that an exit edge bevel of 31 degrees with water as the cutting fluid gives negligible burr at the exit edge of the drilled hole at certain machining conditions. Use of a back-up support can also reduce drill burr to a large extent. In this paper, artificial neural networks (ANN) are developed for modeling experimental results, and modeled values show close matching with the experimental results with small deviations.