Study On Die Steel Temperature Field And Surface Integrity In High Speed Milling

Mould as the main process equipment in industrial production is widely used in machinery,electronics,automobile and other pillar industries.Die steel is mainly used in the production of steel mold manufacturing.High speed machining of die steel is no longer simply the pursuit of high removal rate,but more concerned about the study of high surface quality and high machining accuracy under the condition of high speed.Therefore,further study of high speed milling of die steel temperature field and the distribution of surface integrity,is of great significance to improve the quality of milling.The distribution of temperature field and surface integrity in high speed milling process are studied.Heat conduction mode,the heat convection between cutting tools and air medium,and heat flux intensity boundary conditions in actual milling die steel process are fully considered.And according to general heat equation,the heat conduction model of transient temperature field is built.The differential form of temperature field models are converted into corresponding form of the integral functional equation by the weighted residual method.A certain accuracy method for calculating the approximate solution is presented.And the transient temperature response of space element in milling system is obtained under equal time intervals.Based on the optimized way of milling to analyze the milling force change rule under different milling mode,and to determine the spacing when the milling surface algorithm through the establishment of 3D finite element model.The effects of milling parameters on surface integrity are analyzed through the optimized milling cutter path,by combining milling simulation and milling experiments.Finally,the high speed milling die steel simulation system was developed through Matlab-GUI platform.Through the method of combining theoretical research and experiment,high speed milling surface integrity and temperature field are in-depth researched.Thehigh speed milling and cutting costs is reduced and the quality of the work piece surface is improved.The advantages of high precision of high speed milling are full played and which is got more extensive application.