Research On Wear And Tool Geometric Parameter Optimization Of Cemented Carbide Plunge Milling Tools

At present,the most common and effective processing method in the international machinery manufacturing industry is the reduction of materials such as turning,milling,planing,grinding and drilling.As a new machining method for milling and drilling combination,plunge milling is widely used in the rough machining of large-scale dissimilar components.Due to its high material removal rate,the tool wear is severe during machining.Even the chipping phenomenon has caused the cutting to continue.Therefore,studying the wear law and distribution of cemented carbide coated tools is of great significance for the overall plunge milling of large-scale heterogeneous parts.According to the actual situation of the plunge milling of the turbine water bucket,this paper focuses on the characteristics of the plunge milling process from these view as following:Firstly,A predictive model for the wear of cemented carbide plunge milling tool has been established.Through the study of the tool wear mechanism,the forms of the tool in the plunge milling process and the tool wear amount of different forms have been concluded.The calculation of the wear amount of different wear forms is carried out,and the calculation formula of the total wear of the flank face of the cemented carbide plunge milling tool is obtained.Secondly,A simulation model of 0Cr13Ni4 Mo stainless steel for cemented carbide coated plunge milling tool have been established.Using the simulation model,the variation of cutting force,cutting temperature and tool wear during the plunge milling process under different cutting parameters was studied..Thirdly,The lifetime experience model of cemented carbide plunge milling tool was established,and the experimental study on the plunge milling process of cemented carbide tool was carried out.Using the single factor test technique,the accuracy of the simulation model of the plunge milling process is analyzed through the comparison of the simulation data and the experimental data,which provides theoretical support for the subsequent study of the plunge millin g process using the finite element software.Finally,The influence of tool geometry parameters on tool wear in plunge milling has been studied.Using Deform-2D finite element simulation software,the orthogonal test scheme is used to study the optimal combination of tool rake angle,back angle and cutting edge structure in the process of plunge milling,which provides theoretical support for the optimization of the parameters of plunge milling cutter.