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 en- gineering technology was used to reconstruct surface after sprlngback. The reconstructed surface and the original surface were used to es- tablish reverse loading model. According to the elastic deformation characteristics, the correspondence of each node on reconstructed sur- face 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.
出处
《锻压技术》
CAS
CSCD
北大核心
2014年第8期9-13,共5页
Forging & Stamping Technology
基金
广州市科技攻关计划项目(2007Z2-D9031)
关键词
复杂型面
回弹参考点
回弹评价
逆向工程
complex surface
springback reference point
springback evaluation
reverse engineering
作者简介
冯杨（1975-），男，博士，讲师E-mall：felixscape@126．com
