Simulation and Experiments on Cutting Forces and Cutting Temperature in High Speed Milling of 300M Steel under CMQL and Dry Conditions

Abstract

The effects of cryogenic minimum quantity lubrication (CMQL) on cutting forces and cutting temperature are analyzed in high speed milling of 300M steel. The influences of cutting parameters on cutting forces and cutting temperature are predicted by analogue simulation. Based on single-factor comparative test, the variation laws of cutting forces F and cutting temperature T with cutting parameters are studied in high speed milling of 300M steel under dry and CMQL conditions. Under the condition of CMQL, the influence of cutting parameters (cutting speed v, feed per tooth fz, cutting depth ap and cutting width ae) on cutting forces and the cutting temperature are analyzed by orthogonal test, and the prediction models of cutting forces and cutting temperature are established. The results show that CMQL condition can effectively reduce cutting forces and cutting temperature in the cutting process. Under the condition of CMQL, the cutting depth on the cutting forces is most significant, and the cutting speed has the greatest influence on the cutting temperature. The prediction model of cutting forces and cutting temperature is established, which can be a valuable reference for actual machining.