Multi-Pass Wheel Spinning Forming Numerical Simulation Technology And Simulation Research

Metal spinning is a kind of metal plastic forming process. This technology is mainly used to produce hollow thin-wall revolving part. Because of its high production efficiency, good product quality, simple device and high utilization ratio of material and so on, it’s widely applied to aerospace, civil and national defense and fields. The technology combines forging, extrusion, bending, drawing and rolling process, has the characteristics of continuous plastic deformation. With materials of low cost, high efficiency, good product quality and simple mould design etc. Multi-pass spinning, used as an advanced plastic forming technology. However, forming mechanism of multi-pass conventional spinning is complex, and especially the roller-trace has an important influence on spinning forming law, forming quality and processing efficiency.This paper, Based on the characteristics of multi-pass spinning forming process and based on finite element theory, the process characteristics of automobile wheel spin on the basis of in-depth analysis, first, the numerical simulation of forward and backward power spinning for cylinder was established on the ABAQUS elastic-plastic finite element method, through the analysis of forward and backward spinning forming process generally forward spinning is better. After, main research hub to numerical simulation of the process of spinning forming of established in accordance with the actual wheel hub multi-passl spinning forming process analysis, a reasonable mechanical model of multi-pass spinning is established,and the key techniques are studied systemically and thoroughly and solved effectively, including continuous loading, material hardening, boundary condition, mesh, etc.With ABAQUS finite element software as the platform, Studied important parameters such as the rate of feeding, the thinning rate and friction coefficient to first time and the second time the plastic passes the maximum and the maximum equivalent strain. Get the spinning forming process of stress and strain distribution for each pass, Strain zone is analyzed and plastic forming mechanism, flow law of metal forming process, optimization of process parameters for effective to provide the basis.Through to several important parameters such as the feed rate, coefficient of friction and the thinning rate with the simulation results of the analysis and forming stress and strain and energy movement as the main judgment, Through orthogonalization deal with the influence of different parameters on the spinning forming is as follows:the rate of feeding> friction coefficient>reduction ratio. Through orthogonalization processing, neural network and genetic algorithm analysis feed ratio, friction coefficient and so on conditions on the relationship between the influence of spinning forming quality, get the optimal process parameters combination.