摘要
滚动体在加工制造过程中往往受研磨设备的精度、磨盘参数及沟槽形状、加工参数(压力、转速等)和“误差复映”现象等因素的影响而存在一定的直径误差,且在轴承装配时可能将具有不同直径误差的滚动体混装,故研究滚动体直径误差对轴承噪声的影响具有重要意义。以D17621N4Q型双半内圈角接触球轴承为例,通过设计实验采集在不同直径误差和排布方式工况下的噪声信号,分别提取信号的有效声压和小波包-AR能量熵两个特征参数,从噪声信号的强弱和混乱程度两个角度进行分析。实验结果表明:误差滚动体的大小、个数以及不同的排布方式都会对滚动轴承的噪声特性造成一定规律的影响,对误差滚动体进行合理排布,能有效降低滚动轴承的运转噪声。
Rolling body in the process of manufacturing is often affected by the precision of the grinding equipment,grinding disc parameters and groove shape,processing parameters(pressure,speed,etc.)and"error reflection"phenomenon and other factors,and there is a certain diameter error,coupled with the bearing assembly may have several rolling bodies with different diameter error mixed.It is of great significance to study the influence of rolling body diameter error on bearing noise.This study takes D17621N4Q double half inner ring angular contact ball bearing as an example,through the design of experiments to collect the noise signal under different diameter error and arrangement mode working condition,respectively extract the signal effective sound pressure and wavelet packet-AR energy entropy two characteristic parameters,and two aspects from the noise signal strength and confusion degree are analysed.The experimental results show that the size and number of error rolling elements as well as different arrangement methods will affect the noise characteristics of rolling bearings in a certain way,and the reasonable arrangement of error rolling elements can effectively reduce the operation noise of rolling bearings.
作者
邱洪顺
佐景涛
陈观慈
毛华萍
QIU Hongshun;ZUO Jingtao;CHEN Guanci;MAO Huaping(Faculty of Mechanical&Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;AECC Harbin Bearing Co.,Ltd.,Harbin 150025,China)
出处
《机械科学与技术》
CSCD
北大核心
2023年第8期1184-1191,共8页
Mechanical Science and Technology for Aerospace Engineering
关键词
轴承
滚动体直径误差
噪声
有效声压
小波包-AR能量熵
bearing
rollers'diameter error
noise
effective sound pressure
wavelet packet-AR energy entropy
