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

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