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首页> 外文期刊>Journal of Advanced Science >小口径ジャーナルすべり軸受における安定化流量の実験的検討
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小口径ジャーナルすべり軸受における安定化流量の実験的検討

机译：小直径轴颈滑动轴承稳定流量的实验研究

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摘要

The effects of temperature distribution and external vibration on stabilized supply flow rate of small bore journal sliding bearing were experimentally investigated. Journal sliding bearings are used widely in many rotational machineries such as engine, turbine, HDD etc.. However, journal sliding bearings generate oilwhip under high speed operation. In order to solve this problem, Hashimoto suggested a stabilization method for suppressing oilwhip by using starved lubrication in which supply oil rate is reduced. However, the starved lubrication have the risks of sudden rising of temperature and regenerating oilwhip caused by external vibrations. In this study, the temperature distribution around the axis and the effect of the external vibrations was investigated to make clear the behaivior of the oil. The temperature distributions were measured with thermocouples and cavitations generating in the bearing clearance were visualized by using a high-speed camera. In addition, the vibration test was carried out with an impulse hammer and an acceleration sensor. The area was observe for the temperature to increase rapidly from the results of reducing supply of flow rate. In addition, in the case of increasing supply frow rate, the difference between the maximum temperature and minimum temperature in the bearing is reduced gradually. Moreover, the oil whip was occurred by the external vibration. It was found that both risks were possible to avoid by adjusting the supply flow rate adequately.
机译：实验研究了温度分布和外部振动对小孔轴颈滑动轴承稳定供应流量的影响。轴颈滑动轴承广泛用于许多旋转机械，例如发动机，涡轮机，硬盘驱动器等。但是，轴颈滑动轴承在高速运行下会产生油鞭。为了解决这个问题，Hashimoto提出了一种稳定的方法，该方法通过使用饥饿的润滑来抑制油搅打，该方法可以降低供油率。但是，润滑不足会带来温度突然升高，以及由于外部振动而导致油鞭再生的风险。在这项研究中，研究了轴周围的温度分布和外部振动的影响，以弄清油的特性。用热电偶测量温度分布，并通过使用高速摄像机观察轴承间隙中产生的气蚀现象。另外，用冲击锤和加速度传感器进行了振动测试。从减少流量的结果可以观察到温度迅速升高的区域。另外，在增加供应率的情况下，轴承中最高温度和最低温度之间的差异逐渐减小。此外，油鞭是由于外部振动而发生的。发现通过适当调整供应流量可以避免两种风险。

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