A note on the determination of optimal cutting conditions for surface finish obtained in turning using design of experiments

This paper presents a study of the influence of cutting conditions on the s urface finish obtained by turning. A plan of experiments, based on the tech niques of Taguchi, was designed and executed on controlled machining with c utting conditions prefixed in workpieces. Afterwards, the roughness was eva luated on workpieces using two different profilometers. The objective was t o establish a correlation between cutting velocity, feed and depth of cut w ith the roughness evaluating parameters R-a and R-t, following the internat ional norms. These correlations were obtained by multiple linear regression . Finally, confirmation tests were performed to make a comparison between t he results predicted from the mentioned correlations and the theoretical re sults. (C) 2001 Elsevier Science B.V. All rights reserved.