Numerical Simulation And Experimental Research On The Orthogonal Metal Cutting

The metal machining is a method which removes the unnecessary metal through the relative motion of cutting tool and the work piece for obtaining expectant components .Metal cutting is a complexity process with exceeding non-linear and heat-stress coupled. In order to clarify cutting mechanism as well as to optimize the machining process parameter and obtain the best processing effect, the researches have been carried out extensively on the metal cutting process. The numerical simulation based on the finite element technology is applied to the metal cutting process in this paper, in order to provide the theory basis for the improvement cutting art and the optimization processing parameter.The metal orthogonal cutting process is studied on the base of metal cutting theory. The finite element analysis model is proposed on the foundation of the finite element theory and the actual metal orthogonal cutting characteristic. In view of this model, applying the DEFORM finite element software, combining the work piece with cutting tool material characteristic parameter, the load boundary condition is defined and complex friction condition between cutting tool rake and scrap with the coulomb friction theorem is simplified. The nodes separation the criterion from mesh and remeshing standard are put forward .The pretreatment of simulation work is completed.The chip stress-strain rule and the different processing parameter to the cutting force the influence curve are obtained under the simulation of the chip distortion in the orthogonal cutting process. The angle of shear principle is confirmed, obtained the angle of shear simulation result through the simulation angle of shear forming process.The cutting temperature simulation model is established. The different processing parameter to the cutting temperature influence curve is obtained through the simulation the cutting temperature in metal machining.The cutting experiment is carried out by the CA6150 lathe. The simulation results are proved by theexperimental result. All these imply that simulation machining process is feasible and may provide the reference for the actual processing parameter choice.