论文部分内容阅读
以弹性元件传动带为研究对象,基于响应曲面法与DYNAFORM软件对冲压成形工艺参数进行优化。利用中心设计组合方法选择仿真试验的工艺参数,通过数值仿真得出传动带成形高度的响应值,结合最小二乘法建立了反映工艺参数与成形高度之间关系的二阶响应面模型。以弯曲角度、模具间隙以及冲压速度作为设计变量,将成形高度作为优化目标,借助Design Expert v8.0.5软件对二阶响应面模型进行优化,通过优化得出传动带冲压成形的最优工艺参数组合,即弯曲角度为150°,模具间隙为1.02t,冲压速度为3004 mm·s~(-1),成形高度的响应值为5.69 mm。利用冲压级进模对响应值进行试验验证,试验值为5.61 mm,它与响应值之间的相对误差为1.43%,从而验证了响应曲面法应用于传动带冲压成形工艺参数优化的准确性。
Taking the elastic element belt as the research object, the stamping forming process parameters were optimized based on the response surface method and DYNAFORM software. The central design method was used to select the process parameters of the simulation experiment. The response value of the forming height of the belt was obtained by numerical simulation. The second-order response surface model reflecting the relationship between the process parameters and the forming height was established by the least square method. Taking the bending angle, die clearance and punching speed as design variables, the forming height was taken as the optimization objective. The second-order response surface model was optimized by Design Expert v8.0.5 software, and the optimal combination of process parameters was obtained through the optimization. That is, the bending angle is 150 °, the die gap is 1.02t, the pressing speed is 3004 mm · s -1, and the forming height response is 5.69 mm. The response value was tested by stamping progressive die. The test value was 5.61 mm, the relative error between it and the response value was 1.43%, which verified the accuracy of response surface method in the process parameters optimization of belt stamping.