Investigation of The Effect of Radial Width and Axial Depth Parameters on Surface Quality in Milling of White Marbles

Abstract

In this study, surface quality and tangential cutting force and radial width (ae) and axial deep (ap) parameters were investigated in the processing of white marble, which is a natural building material. Five different white marbles were used in the experiments and the taguchi method was applied as the test method. Depending on the number and level of parameters, the L9 orthogonal array was chosen. Cutting forces and surface roughness data were collected for each marble. The optimal level and contribution percentage of each parameter was determined by applying the analysis of variance with the signal-to-noise (S/N) ratio. The Fr and Ra factors for all marbles were found to be ae:1 mm and ap:1 mm. Depending on the significance level, axial depth of cut (ap) was the primary effective parameter (65-86% for Fr; 42-78% for Ra), while radial depth of cut was the secondary effective parameter (3-24% for Fr; 16-35% for Ra). It can be said that the feed rate parameter was not an effective parameter in general.As a result of regression analysis, a significant relationship of 83% was observed between Ra surface roughness value and mineral grain size. Grain size has been the mineralogical-petrographic feature affecting the surface quality of marbles.