摘要
为提高四辊卷板机滚弯成形工艺加工质量,建立了四辊滚弯工艺数学模型,用有限元仿真验证了该模型的准确性,分析了侧辊位移量、板材厚度、滚弯加工速度对板材成形半径及成形质量的影响规律。试验结果表明:随侧辊位移量增大,板材成形半径的下降趋势逐渐趋于平缓,板材的成形质量也有所降低;板材表面的塑性应变波动会随着板厚的增大而降低,即厚板的滚弯成形质量会优于薄板的滚弯成形质量;滚弯加工速度对板材成形半径影响较小,降低滚弯加工速度会提高成形筒件的均匀性,降低筒件表面的塑形应变波动,成形质量也随之提高。
In order to improve the production process quality of four-roll plate bending machines, a four-roll bending mathematical model is established and a finite element simulation is used to verify its accuracy. The influence of side roller displacement, sheet thickness, and rotational speed on the radius and quality ofthefinal shaped plate are analyzed. The simulation results show that as the displacement of side roll increases, the downtrend of the sheet forming radius gradually slows down and the quality of the formed sheet also decreases. Plastic strain fluctuation on plate surface decreases as the thickness increases, quality of thick plate is better than that of thin plate. Rotational speed has less influence on final shape radius, while reducing rotational speed will improve the uniformity of formed plate, forming quality can also be improved by reducing plastic strain fluctuations of plate shaping surface.
作者
王艳
朱新庆
胡捷飞
崔西民
Wang Yan;Zhu Xinqing;Hu Jiefei;Cui Ximin(School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, Chin)
出处
《系统仿真学报》
CAS
CSCD
北大核心
2018年第5期1772-1780,共9页
Journal of System Simulation
基金
2015江苏省重点研发计划(BE2015139)
关键词
四辊卷板机
数学建模
有限元仿真
成形半径
成形质量
four-roll plate bending machines
mathematical model
finite element simulation
forming radius
forming quality
