摘要:The correct and proper selection of the cooling and lubricant fluids in the dimensional hard rocks’ cutting process is one of the most important factors in the improvement of cutting process, and increase of economic efficiency and quality of stone production. Therefore, the present study aims to study the role of cooling and lubricant fluids in the cutting performance of dimensional hard rocks. In this study, 10 granite stone samples were collected from Iranian quarries and their physical and mechanical properties including the uniaxial compressive strength, Mohs hardness, Schimazek’s F-abrasiveness factors and Young modulus were measured and determined. According to three types of cooling and lubricant fluids, including two types of soap water with ratios of 1 to 40 and 1 to 20 and one type of lubricant and coolant powder, and using two different operational parameters such as Feed Rate (Fr) and Depth cut (Dc), 160 laboratory tests for each of these fluids were studied and measured in order to determine the maximum electrical current consumed by the machine. The obtained results were statistically and intelligently evaluated and analyzed through Radial Basis Function (RBF). Based on the results obtained from both analytical methods, the lubricant and coolant powder with ratios of 1 to 20 had the maximum and minimum effects on the reduction of the maximum consumed electrical current in the hard rocks’ cutting process.