Research On Effect Of Milling And Cutter Parameters On Milling Process For Road Miller

Operation parameters of road miller affect machinery perfor-mance significantly as well as tool parameters. However, concerning tress in tool during operations, quantitative knowledge on mill resistance force and torque is still lacking. The influence of operation and tool parameters on force and moment remain unknown yet as well. This study analyzes the effect of different operation and tool parameters on mill stress and moment through finite element method and experimental method. Then the value of tool stress, milling resistance and milling moment is calculated. The effect rule of parameters on specific energy consumption coefficient is obtained finally.This presented work mainly accomplishes these tasks:(1)Analyze the mill process of drum. Formulas for resistance force and moment are derived from the track of tool angel and stress situation.(2)Comparing several primary constitutive models of asphalt concrete helps to choose a suitable material model for simulation. Simulations for mill operation are done with experimental parameters. Then the variance of mill stress is obtained thus mill resistance and moment is computed finally.(3)A test system is designed and built according to the milling process to verify the accuracy of simulation. The apparatus helps to measure milling stress easily. Meanwhile, milling stress is obtained through simulations for the experimental milling process.(4)Milling experiments are done using the test system to obtain milling stress in different conditions. Comparing with simulation results, it is certain that constitutive model used and simulation results are accurate.