Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2008.1072.1076WangM.Y. LanT.S. 7200877In this study, L9(34) orthogonal
array of Taguchi experiment is selected for four parameters (speed, cutting
depth, feed rate, tool nose runoff) with three levels in optimizing the
multi-objective (surface roughness, tool wear and material removal rate)
precision turning on an ECOCA-3807 CNC (Computer Numerical Controlled)
lathe. Through the examination of surface roughness (Ra), tool
wear ratio (mm-2) and the calculation of MRR; the multiple
objectives are then received. By using Grey Relational Analysis (GRA),
the multiple objectives can additionally be integrated and introduced
as the S/N (signal to noise) ratio into the Taguchi experiment. The mean
effects for S/N ratios are moreover analyzed by MINITAB to achieve the
multi-objective turning parameters. Through the verification results,
it is shown that both surface roughness and tool wear ratio from present
optimum parameters are greatly advanced with minor decrease on the MRR
(Material Removal Rate) comparing to those from benchmark parameters.
This study not only proposes a novel optimization technique using GRA,
but also contributes the satisfactory solution for multiple CNC turning
objectives with profound insight.]]>Chang, J.C.,20002000Davim, J.P. and C.A. Conceicao Antonio,20011127882Huh, H., J.H. Heo and H.W. Lee, 200343345350Kim, S.J., K.S. Kim and H. Jang,2003136202208Lin, C.L. and J.L. Lin,200219271276Lin, J.L., C.L. Lin and J.T. Huang,200113359368Lin, J.L. and J.F. Lin,200627845853Lin, W.S., B.Y. Lee and C.L. Wu,2001108286293Palanikumar, K.,2008361927Park, J.H., K.M. Yang and K.S. Kang,200526631637Ross, P.J.,19981st Edn.,Tosun, N. and L. Ozler,200423777782Wei, H.S., S.C. Hwang and S.J. Liu,20022002Wu, F.C. and C.C. Chyu,200220655659Yeh, L.J.,19941994