锻压技术

数控渐进成形中实验件几何参数对成形结果的影响

英文标题：Influence of geometric parameters of experimental parts on forming results in CNC incremental forming

作者：朱虎李吉龙

单位：沈阳航空航天大学

分类号：TG335.5

出版年,卷(期):页码：2019,44(1):27-33

摘要：

为研究几何参数对数控渐进成形实验件成形结果的影响，利用有限元分析软件ANSYS/LSDYNA，以实验件的开口直径、成形角、成形深度为参数，采用正交实验法进行数值模拟实验，通过极差分析，得出不同因素对成形件最小厚度的影响，并对优选的实验件通过实验加以验证。结果表明：成形角对板材件厚度的影响最大，厚度随成形角度的增大而减小，极差值为0.3527；开口直径的影响最小，但变化趋势不明显，极差值为0.0184；成形件的实际轮廓与理论轮廓吻合，Z轴方向的最大偏差值为0.7703 mm，最小偏差值为0.0067 mm，平均偏差值为0.2666 mm；成形件的厚度分布比较均匀，平均厚度值为0.7190 mm。

In order to study the influence of geometric parameters on the forming results of experimental parts in CNC incremental forming, taking the opening diameter, forming angle and forming depth of experimental part as parameters, the numerical simulation experiments were carried out by the orthogonal experiment method and the finite element analysis software ANSYS/LS-DYNA, and the influences of different factors on the minimum thickness of formed part were obtained by the range analysis. Furthermore, the optimized experimental parts were verified by the experiments. The results show that the forming angle has the greatest influence on the thickness of sheet metal, the thickness decreases with the increasing of the forming angle, and the extreme difference value is 0.3527. However, the influence of the opening diameter is the smallest, the variation trend is not obvious, and the extreme difference value is 0.0184. The actual profile is the same as the theoretical profile, the maximum deviation in Z-axis direction is 0.7703 mm, the minimum deviation is 0.0067 mm, and the average deviation is 0.2666 mm. Thus, the thickness distribution is relatively uniform with an average thickness of 0.7190 mm.

基金项目：

国家自然科学基金资助项目(51175351)

朱虎(1964-)，男，博士，教授，E-mail：zhuhu10@163.com

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