Finite Element Simulation Of The Processes Of Metal Cutting And Internal Grinding

Along with finite element technology development and improvement, more and more projects are solved by this method. Metal cutting (including grinding) is the most important machining craft in the machine manufacture. Not only to the traditional cutting but also to the new cutting technology, it has great significance to research cutting process and realize cutting optimization. Using finite element software to simulate metal cutting process can overcomes the problems to a great extent that the mathematical model is hard to describe and computation is difficult. At the same time, it supplies an inexpensive, quick and effective method for avoiding too many traditional examinations which are both time-taking and laborious. On the basis of the classic elastic and plastic mechanics, the theory of heat transfer and thermal stress, this article simulated the process of metal cutting, the temperature field and the deformation in internal grinding by using large-scale general finite element software ANSYS. Firstly, a plane strain two-dimensional orthogonal metal cutting finite element model was created to simulate the material deformation, the angle of shear formation, the distribution of the stress and strain in the shear region and the stress of the cutting tool. The simulation results were analyzed. Change cutting parameters and simulate repeatedly, the effect of them to the cutting tool force was researched. Change the cutting tool parameters and simulate repeatedly, take the smallest cutting tool force as the optimized goal, the rake angle and back angle of YT5 hard alloy tool were optimized when it was used to cut 45 steel. Subsequently, take the internal grinding of A3 steel thin wall ring as research object, create two-dimensional finite element model and simulate the temperature field and thermal deformation. In this process, the command flow was adopted. Withdraw the data and the cloud chart from the result, and discussed the distribution of the temperature field, thermal deformation and the thermal stress and strain. Compared the simulation results in different clamping methods, optimized the clamping method of the thin wall ring internal grinding.This article takes numerical simulation technology into metal machining process, the goal is to supply necessary reference data and cloud chart for metal cutting (including grinding), forecast the machining process, so the research about this filed will become more quick and effective. At the same time, the simulate result can also supply powerful basis for craft improvement, cutting tool parameters optimization and the research of material cutting performance.