Dynamic Modeling And Simulation For Ball-end Milling

In recent years, the dynamic simulation theory and technologies of cutting process receive more and more attentions in both international academic and industrial fields, as a result of the increasingly high requirements of quality and efficiency in the machining process.In this thesis, simulation of dynamic process in ball-end milling is carried out using Matlab software, combining with the geometric model of solid ball-end milling cutter and principle of milling regenerative chatter. Based on the milling force model of ball-end milling cutter, chatter model, stability domain model and surface topography model of machined surface which was already established, the simulation system of milling dynamics was constructed.On the basis of technology research on the simulation of the ball-end milling dynamics, the simulation optimization application software of dynamics in the CNC milling process was designed and developed using two engineering simulation softwares Matlab and Microsoft Visual C++ 6.0 which are most widely used at present. Its main function is simulation of static force of ball-end milling, milling force coefficient, chatter stability domain simulation and dynamics simulation of milling process.Therefore, this platform is not only able to make a simulation on the main physical parameters and surface topography in ball-end milling, but also play a major role in the forecast of processing parameters in the process, so as to provide a effective platform to solve the selection and optimization of parameters for dynamic simulation and CNC milling process.Milling experiments were conducted on the die steel with solid carbide ball-end milling cutter. After experimental verification, simulation results were in good accordance with the experimental data.