Thermomechanical Modeling and Analysis of Workpiece in End Milling Process

In order to study the cutting force distribution of the workpiece during the process of vertical milling machining, the thermomechanical model of the steady oblique cutting is derived. The measuring system of cutting force is also established, and then the feasibility of theoretical model is verified. First, according to the steady oblique cutting of cutting force and cutting temperature characteristics, coupled thermomechanical model of the workpiece in the milling process is derived. Based on above, a dynamic solving approach for cutting force is proposed. Then, the dynamic measurement system of force is established by using artificial Kistler force measurement. Finally, the thermomechanical model and dynamic measurement system are used to analyze the cutting force of AISI1045 steel under specific conditions. Analysis results indicate that the maximum of Fx, Fy and Fz are 198 N, 40 N and 90 N respectively, the error between calculated and measured value are 2%, 20% and 10% respectively. It shows that the established method can be used to investigate the thermo-mechanics of workpiece accurately in milling process.