锻压技术

拉深筋结构参数与约束阻力的回归正交试验

英文标题：Regression orthogonal experiment of drawbead structure parameters and restraining force

作者：李群杨聪邹宗园郭佳

单位：燕山大学

分类号：TG386.32

出版年,卷(期):页码：2018,43(8):35-38

摘要：

利用拉伸筋试验系统，通过回归正交试验的方法对梯形拉深筋结构参数与拉深筋约束阻力的定量关系进行实验研究，建立了梯形拉伸筋结构参数与约束阻力关系的一次线性回归方程，并对回归方程和偏回归系数的显著性进行了F检验，校验了回归方程的准确性；分析了梯形拉伸筋结构对约束阻力的影响规律：凸筋圆角半径、凹槽半径对约束阻力具有显著性影响，筋高对约束阻力影响不显著。用结构参数实际值与板材厚度t的比值替换回归方程中的试验因素，保证了回归方程的通用性,实现了通过回归方程即可根据梯形拉伸筋结构参数预测出板材通过拉深筋时的约束阻力，为冲压模具拉深筋设计提供了基于实验的可靠依据。

The quantitative relationship of trapeziform drawbead structure parameters and drawbead restraining force was studied by the regression orthogonal experiment by using the drawbead test system. The linear regression equation of the relationship between trapeziform drawbead structure parameters and restraining force was established. The F test for significance of the regression equation and partial regression coefficient was carried out to verify the accuracy of the regression equation. The influence law of trapeziform drawbead structure on the restraining force was analyzed. The radius of convex rib round corner and groove have significant effect on the restraining force, while the influence of trapeziform drawbead height is not significant. The generality of the regression equation was ensured by replacing the experimental factors in the regression equation by the ratio of actual values of structural parameters to sheet thickness t. Through the regression equation, the drawbead restraining force when the sheet passed through the drawbead was predicted according to trapeziform drawbead structure parameters, which provided reliable experiment data for the design of stamping die drawbead.

基金项目：

国家自然科学基金资助项目（51475408）；河北省重点研发计划项目(17211911)；秦皇岛市科学技术研究与发展计划项目(201703A013)

李群（1971-），女，博士，副研究员 E-mail：qunli@ysu.edu.cn

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