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Research Article

Year : 2016 | Volume: 2 | Issue: 4 | Pages: 1-10

Optimization of Cutting Parameters in Drilling of Ti- 6Al-4V Alloy using Taguchi and ANOVA

M Balaji1*, B.S.N Murthy, N Mohan Rao2

doi:10.18831/james.in/2016041001

Corresponding author

M Balaji*

Department of Mechanical Engineering, V R Siddhartha Engineering College, Vijayawada, Andhra Pradesh, India.

  • 1. Department of Mechanical Engineering, V R Siddhartha Engineering College, Vijayawada, Andhra Pradesh, India.

Received on: 07/09/2016

Revised on: 08/14/2016

Accepted on: 08/24/2016

Published on: 08/27/2016

  • Optimization of Cutting Parameters in Drilling of Ti- 6Al-4V Alloy using Taguchi and ANOVA, M Balaji, B.S.N Murthy, N Mohan Rao., 08/27/2016, Journal of Advances in Mechanical Engineering and Science, 2(4), 1-10, http://dx.doi.org/10.18831/james.in/12016041001.

    Published on: 08/27/2016

Abstract

The present work is focused on influence of drilling parameters namely drill bit helix angle, cutting speed and feed rate on the drill bit life. Eight drilling experiments have been planned as per Taguchi orthogonal array of L8 with two levels of each drilling parameter and is performed on Ti- 6Al-4V with carbide drill bits. Surface roughness and amplitude of drill bit vibration velocity are taken as responses to evaluate the tool life and significance of process parameters. In this study, a non-contact sensor named Laser Doppler Vibrometer (LDV) was used to measure the vibration of drill bit in terms of acousto optic emission signals. A high-speed Fast Fourier Transform (FFT) analyzer was used to transform the acousto optic emission signals in to useful signals like acceleration of drill vibration velocity. In the analysis of surface roughness and amplitude of drill bit vibration, helix angle is found to be the significant parameter with a contribution of 46.35% and 75.58% respectively.

Keywords

Surface roughness, Tool wear, Taguchi, ANOVA, LDV.