Research On Modeling And Parameter Optimization Of 3Cr13 Stainless Steel Milling

3Cr13 stainless steel has an increasingly wide utilization in medical equipment and food machinery industry as cutting of hardworking material because of its high strength,corrosion resistance and polishing.In practical machining production,how to determine the cutting parameter value and maximize the performance and resources of the production system to ensure the quality of the product is a problem to worth studying.Based on practical cutting in industry,this paper optimizes the milling process of 3Cr13 stainless steel.The main research contents and results are as follows:(1)A series of metal cutting theory is adopted to analyze theoretical knowledge,including the deformation process of cutting,classification of cutting,evaluation of cutting factors,and characteristics of machining,to lay a foundation for follow-up study.(2)Based on the orthogonal experimental method,the four-factor and five-level milling force experimental was designed to study the effect of milling parameters on milling force during milling.With range analysis method is given which suggests that the axial depth of cut has a great influence on the milling force,while the radial depth of cut has the weakest effect on the milling force.Therefore,the machining characteristics of 3Cr13 stainless steel materials can be effectively improved by using the smaller axial depth of cut and the feed rate,the larger milling speed and the radial depth of cut.(3)According to the result of orthogonal experiment,considering multiple linear regression analysis method to establish x,y and z three directions of the milling force prediction model,combined with analysis of variance for each of these three directions of the regression equation and regression coefficient significance test,we found that the three directions of the regression equation of the milling force prediction models are highly significant,the result suggests that establishing the milling force model of the results accurate and reliable which have a high degree of confidence and practicability;It is found that the axial depth of cut of the four regression coefficients is highly significant for the milling forces of x,y and z,followed by feed rate and milling speed,while the influence of the radial depth of cut on cutting force is not significant.Based on orthogonal experiment,the effect of milling parameters on milling force is analyzed,what's more,the significance ofcutting parameter on cutting force is verified.(4)The finite element method is adopted to establish the 3d simulation model,the method of using numerical analysis to study the effect of cutting parameters on cutting force,the equivalent parameters under the conditions of the simulation results compared with the experimental results,we found that 3Cr13 stainless steel milling simulation with the experimental results have the same trend,the y direction of the cutting force significantly greater than the other two directions of the cutting force,three directions of the milling force average error is less than 15%.Therefore,the simulation model result is reliable and accurate,which can provide reference value for efficient,stable and safe optimization of 3Cr13 stainless steel milling process and optimization of cutting parameters.