Simulation On Trimming Cut Forming Process Of Die Forging Blade And Optimal Die Design

As the technology of forging die about blade advanced, trimming process which is indispensable in forging has been gaining more attention. The blade trimming process directly affects the processing quality. Blade trimming process is very complex, so it is difficult to use experimental methods to study the blade trimming process. Using experimental methods to study the die wear and die life will spend a lot of money and time, it is not feasible. But using the finite element method to simulation analysis can solve that problems and get good results. Besides, the blade cutting quality is directly related to the trimming die design. Therefore, the optimal design of trimming die has become a hot blade.First of all, this article used UG secondary development, with<the Computer Aided Design of Die Forging Blade System>to design the trimming die. Then using DEFORM-3D software simulated blade forging, and got a final blade forging with a burr. And simulate the trimming cut forming process of forging blade. Secondly, study the work stress and strain, the stress of die, the die wear, the die life and cut surface quality and so on by analysis trimming process with different trimming speed and clearance which is between punch and cavity block. Then according to simulation results obtained:(1) The curve about the relation between clearance and the quality of blade cutting surface, die wear;(2) The curve about the relation between speed and the quality of blade cutting surface, die wear. Besides introduced two methods of evaluation of die life, by contrast, the results of finite element analysis based on die wear accumulation are more approximate to actual life than empirical formulas.Last, base on the simulation results data, to select a reasonable clearance and trimming speed, to optimize the trimming die, and harden the surface where die stress is high.