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三辊行星轧制中,轧辊轧件接触区的分布是轧制力和轧制功率计算的基础,是轧辊外轮廓设计的重要依据。研究结合了实际轧制过程中轧辊和轧件的运动特点,引入相应的约束条件,给出接触区分布的解析表达式;在给定轧制工艺参数下,数值分析计算出接触区具体的分布情况。该方法避开了轧辊轧件线接触的假设,可给出接触区分布情况。结果显示,该分布不仅要受到行星轮公转半径、偏转角和倾斜角的影响,还与轧件进给速度和轧辊转速有关。
In the three-roller planetary rolling, the distribution of the contact area of the roll rolling is the basis of the calculation of the rolling force and the rolling power, which is an important basis for the design of the outer contour of the roll. The research combines the movement characteristics of the roll and the rolling stock in the actual rolling process, introduces the corresponding constraints and gives the analytical expressions of the contact zone distribution. The specific distribution of the contact zone is calculated by numerical analysis given the rolling process parameters Happening. This method avoids the assumption of line contact in the roll stock and gives the distribution of contact zones. The results show that the distribution is not only affected by the revolution radius, deflection angle and inclination angle of the planetary gear but also with the feed rate of the rolling stock and the rotational speed of the roll.