Process optimization for slip-line defects in automobile hood edge drawing
Aiming at the problem that the slip line defects are easy to occur at the sharp edges in the drawing process of automobile hood outer panel,the process parameters that may cause appearance defects were studied.Firstly,the influence of blank holder force,friction coefficient,drawbead strength and stamping direction on the forming of engine hood outer panel is studied by using the single factor variable method,and the primary and secondary order of each factor affecting the slip line and the approximate range of good drawing forming are determined.Then,orthogonal experiment method and range analysis are used to find the optimal level combination.The research results show that the application of numerical simulation technology can improve the forming quality of engine hood outer plate,reduce the number of die tests,shorten the production cycle and reduce the production cost.The reasonable combination of process parameters can optimize the slip line defects and increase the control method of slip line defects.
automobilehoodsharp edge formingtechnological research
万方数据
维普
