| Spinning is an advanced metal forming technology, which has the advantages of small deformation, saving raw materials and high strength of products. Therefore,spinning technology has been widely used in aerospace, military production,mechanical engineering, production of daily necessities and many other industries. In recent years, many domestic scholars studied the spinning technology, mainly focused on the influence of process condition on the spinning products quality, and few researches on the status of the spinning roller were carried on. Therefore, based on plastic mechanics theory, the mechanical behavior and wear mechanism of the spinning roller in the process of spinning were studied. And Aluminum alloy cone part spinning experiment was conducted.The power spinning process of aluminum alloy cone part was simulated with the finite element analysis software DEFORM-3 D. Firstly, the finite element model of cone part spinning process was established and the spinning process was simulated in order to obtain the load data of spinning roller. Secondly,the model of roller stress was established. The stress state of spinning roller was analyzed by putting the load data that was obtained in first step on the spinning roller. The variation law of spinning roller stress and deformation in different thinning ratio and feeding rate was compared. The result showed that the influence of thinning ratio on roller maximum stress and deformation was conspicuous and positive. And feeding rate was not.The model of roller wear was established and the wear condition of roller in spinning process was simulated. The evolution of wear area in roller working surface was analyzed. The variation law of roller wear value in different working condition was analyzed by comparing the maximum wear value in different hardness, friction coefficient and feeding rate. The result showed that the maximum wear value of roller could be decreased greatly by improving the hardness, lowering the friction coefficient. And adjusting the feeding rate reasonably could also reduce wear.The aluminum alloy cone part was carried out by using the spinning platform.By comparing the roller load data in spinning experiment and numerical simulation result, the variation trend of experiment result and simulation result was found accordant and the effectiveness of the finite element model of spinning process was verified. |
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