Finite Element Simulation Of High-speed Dry Cutting Process For 40crnimoa Hardened Steel

With high efficiency, high precision, environmental protection, high-speed cutting bring another revolution of the machining technology.With the research of some key problems in high-speed cutting, application scope of high-speed cutting is increasingly wide and it is known as one of the advanced technology of machining area in 21st century. Hard cutting is process method that directly cut high hardness materials (45-65HRC) such as hardened steel,etc and regard it as a final machining process. high-speed hard-dry cutting that is hard-dry cutting technology combination with high-speed make the mould processing from the traditional processing method (hardening-grinding), it not only can increase the productivity and processing quality of parts, but also can lower energy consumption and reduce pollution greatly. Finite element method which is Widely applied in engineering practice open a new road of time and cost savings for study on high-speed cutting and so on.Based on a large finite software ABAQUS, the reasonable finite element simulation model for hard high-speed cutting is established in the paper, simultaneously changed cutting tools and cutting dosages parameters by former processing modules and simulated high-speed hard dry cutting process under different cutting conditions.Through two-dimensional orthogonal cutting simulation of high-speed dry cutting 40CrNiMoA hardened steel process, the research got chip forming process under the different cutting condition, studied the cutting force dynamic change regulation, stress and temperature field distribution of work piece and cutter under the different cutting condition, and analyzed their causes. Based on two-dimensional simulation, more realistic three-dimensional cutting model is established. Through simulation, three-dimensional chip morphology is get and studied the tool cutting edge inclination influence law of the cutting force and the cutting temperature. Through integrating 2d and 3d simulation results and with related theory, got the optimal cutting parameters of high speed dry cutting 40CrNiMoA hardened steel.Parts of the simulation results contrasted with the experimental data, found that the two has good consistency, it shows that the finite element method used by this paper in a certain extent can replace the experiment method, simulation results can be used to guide practical production.