Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
Rolling bearings are one of the most important machine elements, known as the "rice of industry". They are widely used in a variety of rotating machines and are indispensable for them. Despite the large amounts of rolling bearings used, it is still difficult to accurately calculate the service life of rolling bearings in advance theoretically, and it is also not easy to calculate the support stiffness, contact pressure, and internal stress of rolling bearings. In this study, we focus on the contact problem of four-point contact ball bearings, which have not been studied much. The commercial software SolidWorks and Hertz theory are used to analyze contact problems of the four-point contact ball bearings. In these analyses, a numerical analysis method is proposed to calculate the contact pressure and support stiffness of bearing. The comparison between the calculation results obtained by SolidWorks software and Hertz theory shows that both the contact pressure and support stiffness are almost the same when one-ball contact model is used, but there is a little difference between the two methods when the eight-ball contact model is used. So, it is necessary to improve the accuracy of the analysis by optimizing the eight-ball contact model.
