A STUDY ON COST OPTIMIZATION OF INTERNAL CYLINDRICAL GRINDING

This study aims to minimize the grinding cost of internal cylindrical grinding of stainless steel 316 using optimal exchanged grinding wheel diameter. The relationships of the grinding cost, the exchanged grinding wheel diameter and the grinding process parameters are calculated by mathematical functions. The influences of ten grinding process parameters including the initial grinding wheel diameter, the width of grinding wheel, the total depth of dressing cut, the tolerance grade, the grinding wheel life, the radial grinding wheel wear per dress, the machine tool hourly rate, the wages including overhead cost, the grinding wheel cost, and the ratio of workpiece length per workpiece diameter on the exchanged grinding wheel diameter have been investigated. Based on 128 sets of the grinding parameters, the optimum exchanged grinding wheel diameter related to the minimal grinding cost have been determined as a function of the grinding parameters. This developed relation can be further applied for cylindrical internal grinding to reduce the grinding cost