锻压技术

四辊卷板机下辊变形分析及补偿技术

英文标题：Deformation analysis and compensation technology of down-roll for four-roll plate bending press

作者：郑九华常欣王新宇武凯侯加林

分类号：TP391.1

出版年,卷(期):页码：2018,43(2):0-0

摘要：

四辊卷板机有4个工作辊，其中下辊受力最大，受力变形最明显，因辊子变形导致卷制精度不足、生产效率低下的问题长期存在。对下辊受力变形进行理论分析，推导下辊受力变形计算公式，设计了有效的补偿方案，并利用ABAQUS有限元分析软件对下辊有补偿状态进行三维动态仿真。仿真结果表明，与无补偿情况相比，单辊支撑、双辊支撑2种补偿方式都有较为明显的补偿效果，至少可以减小变形量40%以上，属于有效补偿方案。设计了双辊支撑补偿装置，并进行了生产试验，结果表明采用该补偿装置卷制工件的直线度精度由±5 mm提高至±2 mm，径向成形精度由±9 mm提高至±3 mm，精度补偿效果明显。

Four-roll plate bending press has four work rolls，and the down-roll withstanding the largest force will lead the deformation obviously. Therefore, the problems of roller deformation leading to lack of precision and low productivity persists. Then, the force and deformation of down-roll were analyzed in theory, and the force deformation formula was derived. Furthermore, the compensation scheme was designed, and it was simulated by finite element analysis software ABAQUS.The simulation results show that compared with no compensation situation, the single roller support and double-roll support compensation methods have more compensation effect, and the deformation can be reduced at least 40%, namely the above two compensation methods are effective compensation schemes. Finally, the double-roll support compensation device is designed, and the production test is conducted. The results show that the straightness accuracy of workpiece is improved from ±5 mm to ±2 mm，the radial forming accuracy is improved from ±9 mm to ±3 mm, and the accuracy compensation effect is very obvious by the double roller support compensation device.

基金项目：

国家国际科技合作专项资助（2015DFR70090）

作者简介：郑九华（1972-），男，博士，副教授 E-mail：zjh1882@163.com

参考文献：

［1］杨兵，高永生，张文,等.变厚板(VRB)冲压成形数值模拟
［J］.塑性工程学报，2015，22（1）：88-93.

Yang B, Gao Y S, Zhang W, et al. Numerical simulation technology of stamping of variable-thickness rolled blank(VRB)
［J］.Journal of Plasticity Engineering, 2015，22（1）：88-93.

［2］陈兰. 超大型数控船用卷板机上辊挠度分析及补偿技术研究
［D］.南京：南京理工大学,2012.

Chen L. Research on Deflection Analysis and Compensation Technology of Upper Roll of Super Large CNC Marine Bending Machine
［D］. Nanjing：Nanjing University of Science and Technology, 2012.

［3］王凯,陈富林,许朝阳,等. 四辊卷板机中方圆卷制工艺的制定与数学模型的建立
［J］. 锻压装备与制造技术,2011,46(6):56-60.

Wang K, Chen F L, Xu C Y, et al. Formulation and mathematical model establishment of square rolling process in four-roll bending machine
［J］.China Metalforming Equipment & Manufacturing Technology, 2011,46(6):56-60.

［4］Salem J,Champliaud H,Feng Z,et al.Experimental analysis of an asymmetrical three-roll bending process
［J］. The International Journal of Advanced Manufacturing TechnoLogy,2016,83(9-12):1823-1833.

［5］周迟,孙宇,刘庆印,等. 四辊连续滚弯侧辊位移计算与数值模拟
［J］. 锻压技术,2017,42(7):36-42.

Zhou C, Sun Y, Liu Q Y, et al. Displacement calculation and numerical simulation with four rollers
［J］. Forging & Stamping Technology, 2017,42(1):137-142.

［6］陈德道，杨晋，安虎平.四辊卷板机最小弯卷半径控制模型的研究
［J］. 锻压技术，2016，41（1）：77-82.

Chen D D, Yang J, An H P. Research on the control model of minimum radius for rolling on bending-plate machine with four-roll
［J］. Forging & Stamping Technology，2016，41（1）：77-82.

［7］李森. 四辊卷板机数控系统的设计与研究
［D］.南京：南京航空航天大学,2012.

Li S. Design and Research of NC System for Four-roll Bending Machine
［D］. Nanjing：Nanjing University of Aeronautics and Astronautics, 2012.

［8］吴胜宝,章定国,康新. 刚体—微梁系统的动力学特性
［J］. 机械工程学报,2010,46(3):76-82.

Wu S B, Zhang D G, Kang X. Dynamic characteristics of rigid body-microbeam system
［J］.Journal of Mechanical Engineering,2010,46(3):76-82.

［9］宋坤,武凯,刘庆印,等. 四辊卷板成形过程理论分析与数值仿真
［J］. 锻压技术,2017,42(1):137-142.

Song K, Wu K, Liu Q Y, et al. Theoretical analysis and numerical simulation of four-roll Forming Process
［J］. Forging & Stamping Technology,2017,42(1):137-142.

［10］成大先.机械设计手册
［M］. 4版. 北京：化学工业出版社，2015.

Cheng D X. Mechanical Design Manual
［M］. Pourth Edition. Beijing:Chemical Industry Press, 2005.

服务与反馈：

【文章下载】【加入收藏】