四辊卷板机中方圆卷制工艺的制定与数学模型的建立

Mathematical model establishment of polycentric circle rolling process in four-roll plate bending machine

通过在四辊卷板机中对方圆的实际卷制,发现从小曲率到大曲率的过渡过程会产生直边段,对方圆的成形产生影响。本文通过修改侧工作辊的变化方式制定了完整的卷制工艺,该工艺能成功消除直边段,卷制方圆效果理想;同时在此基础上建立了四辊卷板机工作过程的数学模型,推导出侧工作辊位移量的理论计算公式。并通过实验验证了该公式的可行性,对生产控制有积极影响。模型可以作为四辊卷板机设计的基础。

The complete roiling process has been designed in the text by modifying the changing way of the side working roller, which can eliminate straight shortcoming and achieve good rolling effect. The mathematic model of working process for the four-roll bending machine has been established, which infers the theoretical calculation formula of the displacement for the side working roll. It is verified by the experiment with positive effect on the production control. The model provides basis for the design of the four-roll bending machine.