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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >EFFECTS OF ROLLING FRICTION OF THE BALANCING BALLS ON THE AUTOMATIC BALL BALANCER FOR OPTICAL DISK DRIVES
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EFFECTS OF ROLLING FRICTION OF THE BALANCING BALLS ON THE AUTOMATIC BALL BALANCER FOR OPTICAL DISK DRIVES

机译：平衡球的滚动摩擦对光驱中自动球平衡器的影响

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摘要

This study is devoted to evaluate the performance of an automatic ball-type balance system (ABB) installed in optical disk drives (ODD) with consideration of the rolling friction between the balancing balls and the ball-containing race of the ABB. Researches have been conducted to study the performance of the ABB by investigating the nonlinear dynamics of the system; however, the rolling friction model adopted was a simple stick-slip type, which does not reflect the true contact dynamics between rolling balls and their races, leading to an inaccuracy in predicting ABB performance. In this study, a complete dynamic model of the ABB including a detailed rolling friction model based on contact mechanics is established. The method of multiple scales is then applied to formulate a scaled model to find all possible steady-state ball positions and analyze stabilities. It is found that possible steady-state residing positions of the ball inside the race are multiple and form continuous ranges. Numerical simulations and experiments are conducted to verify the validness of the theoretical findings. The obtained results are used to predict the level of residual vibration, with which the guidelines on dimension design and material choices of the ABB are distilled to achieve desired performance.
机译：这项研究致力于评估安装在光盘驱动器（ODD）中的自动球形平衡系统（ABB）的性能，同时考虑了平衡球与ABB的含滚珠座圈之间的滚动摩擦。已经通过研究系统的非线性动力学来研究ABB的性能。但是，所采用的滚动摩擦模型是简单的粘滑型，无法反映滚动球及其滚道之间的真实接触动力学，从而导致了ABB性能预测的准确性。在这项研究中，建立了ABB的完整动力学模型，其中包括基于接触力学的详细滚动摩擦模型。然后应用多尺度方法来制定尺度模型，以找到所有可能的稳态球位置并分析稳定性。发现在比赛中球可能处于稳态的驻留位置是多个并形成连续范围。进行了数值模拟和实验，以验证理论结果的有效性。获得的结果可用于预测残余振动的程度，并以此精炼ABB的尺寸设计和材料选择指南以实现所需的性能。

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