Research On Front Component (left)/(right) Of Rear Floor

YN5 is new product developed by Suzuki company in 2005, the paper choose the part - front component (left )/(right) of rear floor as research subject. It demands that thepart be flat and smooth, no defect of warp, wrinkle and crack and mate itself well with near parts. In fact, the surface of the piece is more complex, its forming process property is worse and it is anisomerous . These features of the piece make the forming process and process supplyment complicated and the processing plan various.According to traditional design method, it seems incapable to deal with this kind of complex problem. With the development of metal plasticity forming technology, the technology of computer simulation has become to rebuilding traditional plasticity forming process, powerful tool of enhancing capability of mould design and key technology. Numerical simulation can known metal flowing process in the forming process in advance, forecasting the critical condition of failure producing and optimize process project and process parameter, decrease even eliminate failure and satisfy the purpose of assuring product quality and shortening the product developing period.In this paper, using Finite Element numerical simulation software DYNAFORM, according to the basic theory and method of elastic plastic Finite Element, adopting the approach of connecting numerical simulation with experience design, the forming process of the front component of rear floor is researched. In addition, on the basis of analyzing the punch manufacturability of the piece, the possible processes in every working procedure are compared and analyzed, and the feasible processes are tentatively determined; as for uncertain factors, they are further decided through numerical simulation, finally, the best process is worked out and used to direct practical production. At the same time, the transformations of the field variable during the process of metal forming is investigated by numerical simulation, the tendency of metal flow is forecasted, and the rules how different mould clerance and die fillet affect the camera forming, then the most reasonable process parameters are decided.Because the process supplyment affect the quality of piece forming greatly, here the influence of process supplyment fillets on piece forming is also analyzed, the suitable process plan are finally gained. Moulds of each process is designed in light of the process optimized, and introducing the mould structure of the forming mould and side punch mould for trimming, and the design of key pieces. At last, the conclusion from practical production...