滚轮与型筒外圆几何误差对离心铸造型筒振动性能的影响  

Influence of Geometric Errors of Rollers and Mould on Vibration Characteristics of a Roller-Supporting Horizontal Centrifugal Casting Machine

作　　者：李柳湘 李正美[1] 黄龙文[1] 安琦[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237

出　　处：《华东理工大学学报（自然科学版）》2016年第4期572-579,共8页Journal of East China University of Science and Technology

摘　　要：滚轮支承卧式炉管离心铸造机型筒的振动对炉管最终质量有较大影响,而滚轮与型筒外圆的几何误差是形成铸造型筒振动的主要因素之一。本文通过对铸造机型筒的力学分析,建立了描述滚轮与型筒几何误差的数学模型,给出了计算滚轮与型筒接触点坐标的计算方法,进而得到型筒转子受到支承滚轮的激励力随时间变化的计算模型,再应用传递矩阵法,构建了能够在考虑支承滚轮与型筒外圆几何误差的情况下对型筒振动性能进行计算的方法。通过一个具体的算例进行了计算研究,结果表明滚轮与型筒表面几何误差对型筒转子振动性能有显著的影响。Vibration of the mould of a roller-supporting horizontal centrifugal casting machine for furnace tubes strongly influences the final quality of the products,and the geometric errors of rollers and mould are the important source for mould rotor vibration.The primary goal of this research is to investigate the influence of geometric errors of rollers and mould on the vibration characteristics of a horizontal centrifugal casting machine.A model describing the geometric errors of rollers and mould is established by mechanics analysis.The approach to calculate the coordinates of contact points is introduced to determine the excited forces caused by the geometric errors.Using the transfer matrix method,vibration characteristics are calculated and analysed with the geometric errors of rollers and mould involved.The results reveal that the mould vibration characteristics are significantly influenced by the geometric errors of rollers and mould.

关 键 词：滚轮支承 离心铸造机 表面几何误差 型筒 强迫振动 

分 类 号：TH113.1[机械工程—机械设计及理论]