The FEM Simulation Of High Speed Milling Based On Orthogonal Cutting Model

In the last few years, the rapid progress in science & technology and economic has given a powerful shove-ahead to the high speed metal cutting and tools. The high speed cutting technology has been used well in spaceflight,auto\motor,pattern and machine tool.But, up to now, we can't understand the transformations and rules of the high speed cutting clearly, should do more research and practice to find the basic rules.The geometrical shape of tool has a direct effect on the quality of work piece in the process of metal cutting. A 2 dimensional elastic-plastic finite element model of metal oblique cutting is developed in this study based on large deformation- large strain theory, incremental theory and updating Lagrangian formulation; in order to determine the chip separation, the geometrical separation criterion (distance criterion) is adopted; an automatic remesh technique is used to remesh the distortion mesh; a couple of numerical simulations have been developed on the metal oblique cutting process with different tool rake angles, some conclusions are obtained according to the simulation results : the variation rule of cutting force, and also the corresponding distribution of stress and strain. Theory foundations are provided to the selection of tool geometry and to improve the surface quality of work piece.