关键词: 斜角切削, 有限元分析, 热—弹塑性, 刀具

Abstract: Based on large deformation theory and virtual work principles, a three-dimensional (3-D) thermo-elastic-plastic coupled Finite Element Analysis (FEA) model was constructed. Several key FEA techniques were analyzed and implemented to improve the accuracy and efficiency of the FEA simulation. An oblique cutting case was simulated using the 3-D FEA model. The simulation results were presented and analyzed, including the chips geometric shape and its evolution processes, the stress, strain, cutting forces, and temperature distributions in the workpiece, tool and chip, as well as the residual stresses distributions on the machined surface. The 3-D thermo-elastic-plastic FEA model was proved to be effective by comparing some results of the simulation cases. This FEA model could be used to optimize the processing parameters and rational selection of the geometric parameters of cutting tools.

Key words: oblique cutting, finite element analysis, thermo-elastic-plastic, cutting tools