Simulation Optimization and Experimental Study of Tool Angle and Milling Parameters for Milling Compacted Graphite Iron RuT450
Compacted graphite iron(CGI)is the preferred material for manufacturing blocks and heads of high-per-formance diesel engine cylinders.At present,the selections of cutting tool angles and cutting parameters for machining CGI are mainly based on the recommendations of the tool manual,but the recommended parameters are mostly general parame-ters for cast iron,and the applicability of the recommended parameters for specific compacted graphite iron is still to be op-timized.In this paper,RuT450 is selected as the research object,and finite element method(FEM)milling simulation is used to select the tool angles and processing parameters with the lower milling force and milling temperature as the optimi-zation target.The simulation results show that milling blade with rake angle of 4° and relief angle of 8° are optimal.Based on this,three sets of machining parameters are obtained for milling RuT450 based on finite element simulation.Milling ex-periments are conducted on CGI using the optimized tool angles and processing parameters.The results show that when the spindle speed is 700r/min and the feed speed is 900mm/min,the cutting force is the smallest,the cutting temperature is lower,and the quality of the machined surface is the best,and the experimental results also verify the validity of the simula-tion model.This study has important practical implications for tool and process optimization for milling of CGI.
万方数据
维普
