摘要
角接触球轴承凸出量是轴向预载荷作用下轴承内外圈同一端面的距离,是精密角接触球轴承配对使用的依据。为实现角接触球轴承凸出量快速精密测量,提出了一种光学精密测量方法并研制了测量装置。通过更换不同尺寸轴承定位爪,可实现7208C、7208AC、7308B、7408B轴承凸出量的测量。分析了轴承套圈和滚子之间的赫兹接触,揭示了轴承凸出量变化量与轴向载荷之间的关系,轴承凸出量变化趋势随轴向载荷增加而变缓,逐渐趋向于线性相关。基于有限单元法对测量装置的机架和内圈驱动分别进行变形分析和简谐振动分析,优化后传感器测头振动幅值减小到0.029μm。以7008C(P2)为试验轴承,进行轴承凸出量测量试验。验证结果表明,其测量精度达到0.5μm,实测样件偏差小于0.2μm。
The protrusion of angular contact ball bearings is the distance of the same end face of the inner and outer rings under the axial preload,which is the basis for pairing precision angular contact ball bearing.To realize the rapid and precise measurement of the protrusion,an optical precision measurement method is proposed and a measuring device is developed.By replacing the bearing positioning claws of different sizes,the protrusion amount of the 7208C,7208AC,7308B,and 7408B bearings can be measured.The Hertz contact between bearing ring and roller is analyzed,and the relationship between bearing protrusion and axial load is revealed.The change trend of the bearing protrusion slows down as the axial load increases,and gradually tends to linear correlation.Based on the finite element method,the deformation analysis and simple harmonic vibration analysis of the frame and inner ring drive of the measuring device are carried out.The vibration amplitude of the sensor probe is reduced to 0.029μm after optimization.The 7008C(P2)angular contact ball bearings protrusion is measured.The verification results show that the measurement accuracy reaches 0.5μm,and the measurement deviation of the sample is less than 0.2μm.
作者
赵文辉
张浩
魏喆
Zhao Wenhui;Zhang Hao;Wei Zhe(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110000,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2023年第11期22-29,共8页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(51975386)项目资助
关键词
角接触球轴承
凸出量测量
误差分析
光栅传感器
angular contact ball bearings
protrusion measurement
error analysis
optical grating sensor
