摘要
橡皮囊液压成形工艺是航空钣金成形的主要方法之一,而回弹是影响产品制造精度的重要因素。目前基于有限元数值模拟的回弹补偿技术是解决回弹问题有效的方法,但耗时极长,不易于大范围推广。基于理论算法,在CATIA交互模式环境下二次开发出六个不同类别的回弹补偿模块,对零件数模进行回弹补偿并得到其模具工作型面及型模,实现在新淬火状态下真正意义上的橡皮囊"一步法"成形。验证试验证明了补偿系统及算法的可靠性与正确性。
Fluid--cell formingprocess is one of the main methods of aircraft sheet metal forming However, it suffers seriously from the product quality problem due to springback. As the most effective method to solve the problem, springback compensation technology with FEM requires a long period for numerical analysis, which limits the practical use. Based on the theory of algorithm, six different secondary development modulus for the springback determination have been achieved under the environment of mixed mode of CATIA, and the compensation die and its working surface for a definite digital part modulus can be goa Finally, verification test proves the reliability of the compensation system and the validation of the algorithm.
出处
《机械设计与制造》
北大核心
2016年第3期247-249,共3页
Machinery Design & Manufacture
基金
辽宁省教育厅高校科研基金(20060643)
辽宁省大学生创新创业项目的资助
项目编号(DCS143403)
