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논문 기본 정보

자료유형
학술저널
저자정보
리베라 길버트 (금오공과대학교) 통반칸 (Samsung Display Vietnam) 홍성욱 (금오공과대학교)
저널정보
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Vol.38 No.11
발행연도
2021.11
수록면
851 - 862 (12page)
DOI
10.7736/JKSPE.021.086

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초록· 키워드

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Angular contact ball bearings (ACBBs) are widely used in rotating machinery due to their heavy load-carrying capacity and excellent accuracy in high-speed operation. However, employing an ACBB requires a careful analysis because the characteristics of the ACBB significantly depend on the operating condition. The ball-race contact condition of an ACBB is one of the most important factors that can change its properties. This study deals with the ball-race contact behavior concerning several important parameters, such as rotational speed, unloaded contact angle, and external loading. Between the ball and race under loading, an elliptical contact area is formed, in which pure rolling lines may exist. In the region other than the pure rolling lines, sliding dominates due to differential slippage in the elliptical contact area. We investigated the behavior of ball-race contact in terms of the pure rolling lines. A computational procedure was presented to determine the pure rolling lines. Through simulations, it was found that rotational speed, unloaded contact angle, axial preload, and radial load significantly affected the number and locations of pure rolling lines. The presented results are useful for investigating and estimating the sliding friction torque for ACBBs.

목차

1. Introduction
2. Ball Sliding Motions
3. Behavior of Pure Rolling Lines
4. Simulations and Discussion
5. Parametric Study
6. Concluding Remarks
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