Optimization of Forming Process Parameters for Transmission Belt Based on Response Surface Method

The elastic component transmission belt was taken as research object, and forming process parameters was optimized based on response surface method and DYNAFORM. The method of central composite design was used to select process parameters of numerical simulation, the response value of forming height for transmission belt was obtained by numerical simulation, and the second-order response surface model was established to reflect the relationship between process parameters and forming height by the least square method. Process parameters of die clearance, bending angle and stamping speed are taken as design variables, forming height was taken as optimization objective, and Design Expert v8.0.5 was applied to optimize the second-order response surface model. The best combination of process parameters is acquired that bending angle is 150°, die clearance is 1.02t, stamping speed is 3004 mm·s-1 and the response value of forming height is 5.69 mm. Progressive die is used to verify response value, the experimental value is 5.61 mm, and the relative error between experimental value and response value is 1.43%. The relative error proves the accuracy of the response surface method applied in the optimization of forming process parameters of transmission belt.