NDLI: Surface roughness and roundness of bearing raceway machined by floating abrasive polishing and their effects on bearing’s running noise

Content Provider	Springer Nature Link
Author	Pang, Guibing Qi, Xuezhi Ma, Qinyi Zhao, Xiujun Wen, Chunsheng Xu, Wenji Peng, Yanping
Copyright Year	2014
Abstract	As the two most important indexes of bearing raceway, surface roughness and roundness have significant influence on bearing noise. Some researchers have carried out studies in this field, however, reason and extent of the influence of raceway surface geometric characteristics on bearing running noise are not perfectly clear up to now. In this paper, the raceway of 6309 type bearing’s inner and outer ring is machined by floating abrasive polishing adopting soft abrasive pad. Surface roughness parameters, arithmetical mean deviation of the profile R a, the point height of irregularities R z, maximum height of the profile R max and roundness f of raceways, are measured before and after machining, and the change rules of the measured results are studied. The study results show that the floating abrasive polishing can reduce the surface geometric errors of bearing raceway evidently. The roundness error is reduced by 25%, R max value is reduced by 35.5%, R z value is reduced by 22% and R a value is reduced by 5%. By analyzing the change of the geometrical parameters and the shape difference of the raceway before and after machining, it is found that the floating abrasive polishing method can affect the roundness error mainly by modifying the local deviation of the raceway’s surface profile. Bearings with different raceway surface geometrical parameter value are assembled and the running noise is tested. The test results show that R a has a little, R max and R z have a measurable, and the roundness error has a significant influence on the running noise. From the viewpoint of controlling bearings’ running noise, raceway roundness error should be strictly controlled, and for the surface roughness parameters, R max and R z should be mainly controlled. This paper proposes an effective method to obtain the low noise bearing by machining the raceway with floating abrasive polishing after super finishing.
Starting Page	543
Ending Page	550
Page Count	8
File Format	PDF
ISSN	10009345
Journal	Chinese Journal of Mechanical Engineering
Volume Number	27
Issue Number	3
e-ISSN	21928258
Language	English
Publisher	Chinese Mechanical Engineering Society
Publisher Date	2014-05-17
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	surface roughness roundness polishing lapping bearing raceway noise Mechanical Engineering Theoretical and Applied Mechanics Manufacturing, Machines, Tools Engineering Thermodynamics, Heat and Mass Transfer Power Electronics, Electrical Machines and Networks Electronics and Microelectronics, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Mechanical Engineering

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