Optimization Of Machining Parameters Of The Mating Surfaces Of The Large Power Low Stress And Experimental Research

This paper aims at long life manufacturing technology of spiral bevel gear, research on how cutting parameters influence on the residual stress of gear surface, from the side of mechanical processing process. In the complex processing of spiral bevel gear, it will be influenced by various processing technical factors, when these factors disappear, the remainder of the function and influence which are called residual stress has great influence on the fatigue life of parts. Residual stress is divided into residual pressure stress and residual tensile stress, besides, the residual tensile stress will reduce the parts life and the residual pressure stress will increase the fatigue life of workpiece. Residual stress can be adjusted by the way of heat treatment and controlling the process parameters which is more economic and practical than others. Therefore, the study of how processing parameters influence on residual stress of the parts machined surface, has certain academic research significance and economic significance.In this paper, simulation analyses of machining spiral bevel gear tooth surface and curved surface have been processed using CAE technology. First, build three-dimensional physical model of parts and tools in CATIA software, shift it into Abaqus software, so the process of milling spiral bevel gear tooth surface and curved surface have been simulated, the process parameters (speed of main shaft, feeding speed, cutting depth) which influence on the residual stress of the parts machined surface have been analyzed, the residual stress of the parts machined surface have been obtained in condition of different tools and different process parameters. Second, according to the finite-element analysis process, experimental investigation of curved surface machining are taken, and the residual stress of the parts machined surface is detected by adopting X ray method, so the result of finite-element analysis has been verified. Finally, according to the result of finite-element analysis of spiral bevel gear tooth surface and curved surface, orthogonal test has been taken, the influence degree of different process parameters on residual stress of spiral bevel gear tooth surface and curved surface has been obtained, the most important adjustment parameters for process are provided.In this paper, the analytical method which is processed bases on Abaqus has been discussed, in analysis, it combines hot-force coupling and J-C failure mode, that the residual stress of the parts machined surface are obtained, and the feasibility of this method has been verified by test. All of these have certain theory value and practical significance for analyzing and researching on the process.