FEM simulation of chip formation mechanism in NC turning machining

The finite element analysis (FEA) has been applied to model and simulate the chip formation in the metal cutting process. According to geometry parameter of chip, three-Dimension solid models of different types chip are given in this paper ; The method of FEM modeling in 3-D curled chip and the condition of chip breaking are introduced , and a type chip is modeled and analyzed by FEM . Comparisons made between the experiment analyses and finite element models show good correlation, and approve the forecast capability of FEM simulation for chip formation. Finally, the mechanism of chip formation, existing problems in finite element and the directions of research in the future are come up with in this paper.