三维曲面柔性轧制辊形计算方法  

Roll Shape Calculation of Flexible Rolling for 3D Curved Surface Metal Plates

作　　者：邱宁佳[1] 李明哲[1] 李任君[1] 

机构地区：[1]吉林大学无模成形技术开发中心,吉林长春130025

出　　处：《东北大学学报（自然科学版）》2014年第5期690-694,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51275202)

摘　　要：分析了利用曲面柔性轧制方法实现三维曲面件成形过程中板料厚度变化与轧制变形之间的关系,推导出当工作辊弯曲形状为圆弧时,凸曲面柔性轧制不均匀辊缝的辊缝分布以及工作辊排布函数公式.根据该公式对凸曲面柔性轧制进行数值模拟研究,并通过计算将离散辊全局压下量转化为局部压下分量,得到较好的模拟结果.研制了小型实验装置并进行成形实验,得到典型实验件.数值模拟与实验结果表明,曲面柔性轧制用于成形三维曲面零件具有可行性和实用性.The relationship between the thickness variation of the rolling sheets and the deformation of the rolling for the three-dimensional curved surface parts was analyzed by a curved surface flexible rolling method. The distribution of the uneven roll gap and the function of the working roll arrangement in a convex surface flexible rolling were deduced when the rolls bending shape is the circular. The numerical simulation of the convex surface was applied for the flexible rolling according to the formula. By means of a simple algorithm, the global coordinate reduction has been converted into local coordinate one which led to a better simulation results. A small experimental device was developed and typical test parts were obtained. The simulation and experimental results showed that the curved surface flexible rolling method for three-dimensional curved surface parts is feasible and practical.

关 键 词：材料加工 三维曲面 柔性轧制 不均匀辊缝 数值模拟 

分 类 号：TP335.12[自动化与计算机技术—计算机系统结构]