This paper mainly aims to investigate the influence of surface texture on the vibration and noise caused by friction in rolling bearings under both starved lubrication and flooded lubrication conditions.
Pit textures are fabricated using a fiber laser marking mechanism. The Laser surface texture parameters include: diameter of pit (D = 60 , 100 and 200 µm), depth of pit (H = 5 , 10 and 20 µm), area density (S = 6%, 12%, 24%). Friction and wear tests under both starved lubrication and flooded lubrication are performed using a friction and wear testing machine. Vibration and noise data are collected using a three-axis vibration accelerometer and a noise sensor, respectively.
Under starved lubrication conditions, the main frequencies of the vibration acceleration and sound pressure signals of the textured tapered roller bearing are around 1400 Hz. Under flooded lubrication conditions, the vibration signal of the textured tapered roller bearing is stable with smaller vibration amplitudes. Time-frequency and power spectral analysis indicate that the energy is mainly concentrated at high frequencies. For all surface pit-textured bearings, the signal power around 2500 Hz in the X-direction is lower than that of the non-textured bearings.
This research provides essential references for the optimized design of tapered roller bearing raceways. The study offers valuable guidance for the design and optimization of rolling bearing raceways.
