The Research And Application On Key Technologies Of Stamp Forming Process Of Automobile Panel

In the course of automobile development .Compared with other parts of the automobile, the panels, especially outer panels, have many characteristics, Such as complicated shape, large structure dimensions, high accuracy and strict demand for surface quality. Therefore, designs for dies of panels are important process for the automobile development .It is the designs of dies face for drawing that are the key factors to decide panels' quality.Applications the technology of advanced CAD/CAE, We can do automobile development, die design and analysis for panels formability at the same time .Using the technology of CAD, We can design die face quickly and modify the design conveniently. Using the technology of CAE, We can simulate the process of stamping , forecast the questions of quality ,evaluate the reasonable of designs for dies' face, optimize the design of dies' surface and process parameters at the design stage. It is very important that application of CAD/CAE for development of panels' die, the same as to cost reduction, shortened development cycle and high quality.In this paper, Based upon thorough research into the process of automobile panels forming and the designing of die. Deck lid outer panel act as example of design, Researched the method of CAD for drawing die face, Bring forward the process of automobile panels die face for CAD . Adopting UG/Open on Unigraphics platform. Develop the program for auto-trim of panel die, It is significance to improve the efficiency die design and shortened development cycle.In this paper, Based upon thorough research of stress and strain into the process of automobile panels forming, Study the method of FEA. Example of rectangle box, Study effect of simulation parameter for the result of forming.In this paper, Example of hood outer panel, Finished the design of CAD for hood outer panel drawing die face and the work of analysis for panels formability. Compared with the result of try out. The result of compare shows that using the method of CAD and CAE can shorten development cycle of automobile panel die observably, Proves the result of simulate is nicety and believable.