The Sensitivity Analysis of Inherent Frequency of Roll Mill's Main Drive System

4th International Conference on Mechanics and Mechatronics Research

机械制造;无线电电子学

Hou, Dongxiao^1

School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao

066004, China^1

关键词: Equivalent stiffness;    Inherent frequencies;    Main drive systems;    Mechanical parameters;    Rotational inertia;    Sensitive parameter;    Torsional stiffness;    Torsional vibration model;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/224/1/012002/pdf
DOI  :  10.1088/1757-899X/224/1/012002

来源: IOP

【 摘 要 】

In order to avoid the beat vibration of rolling mill, taking F1 rolling mill of 1780 tandem mill as an example, a twelve DOF branched torsional vibration model of main drive system of F1 rolling mill was constructed. Then the inherent frequency of the rolling mill and the corresponding vibration modes of every inherent frequency were calculated. Meanwhile, the sensitivity of first and second inherent frequency with the change of equivalent rotational inertias and torsional stiffness of rolling mill were analyzed, and the most sensitive parameters which influence on first and second inherent frequency were found out. The result shows that the equivalent inertias of upper and lower work rolls and equivalent stiffness of upper and lower joint shaft of drive system were most sensitive parameters, which are easier to change first and second inherent frequency of drive system. The research will provide theory reference for adopting proper mechanical parameters in equipment design.