锻压技术

复杂型面冲压零件的回弹评价研究与应用

英文标题：Study and application of springback evaluation on punching parts with complex surface

作者：冯杨兰凤崇阮锋

单位：华南理工大学

分类号：TG386

出版年,卷(期):页码：2014,39(8):9-13

摘要：

针对无参考点的复杂型面冲压零件存在回弹不易评价的难题，提出一种基于仿真计算、逆向工程技术和反向加载模型的回弹评价方法。该方法首先在仿真的基础上确定冲压零件回弹参考点，并通过实验验证其可行性；然后通过逆向工程技术得到零件冲压回弹后的重构曲面，利用回弹后的重构曲面与零件原始曲面建立回弹反向加载模型。根据弹性变形特点，建立重构曲面与零件原始曲面各节点的对应关系，得到每个节点的回弹值，实现复杂型面冲压零件的回弹评价。实例证明该方法为复杂型面零件提供了一种回弹评价的思路与方法。

Directed at the difficulty of springback evaluation of punching parts with complex surfaces and without reference points, an evaluation method was proposed based on simulation computing, reverse engineering technology and reverse loading model. Firstly, springback reference point of stamping parts was determined by simulation and the feasibility was verified by experiments. Secondly, reverse engineering technology was used to reconstruct surface after springback. The reconstructed surface and the original surface were used to establish reverse loading model. According to the elastic deformation characteristics, the correspondence of each node on reconstructed surface and original one was established to obtain the springback value of each node, and the springback evaluation of punching parts with complex surfaces was realized. The examples demonstrate that the method provides an evaluation approach for springback of punching parts with complex surfaces.

基金项目：

广州市科技攻关计划项目(2007Z2-D9031)

冯杨（1975-），男，博士，讲师

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