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| 标 题： |
A Comparative Study of Turning and Stationary Groove Journal Bearings for HDD Spindle Motors Under Transient Contact Conditions
在瞬态接触条件下，用于硬盘驱动器主轴电机的车削与固定沟槽滚柱轴承的比较研究 |
| 作 者： |
Ming Feng
Takashi Kenjo |
| 关键词： |
Contact [联系方式]
Friction [ 摩擦]
HDD [ 硬盘]
Hydrodynamic lubrication [ 流体动力润滑]
Spindle motor [ 主轴电机]
Wear [ 穿戴] |
| 出版年： |
2007 |
| 期刊名： |
IEEE Transactions on Magnetics
IEEEIEEEIEEE 磁学杂志 |
| 年卷期： |
2007, vol.43, no.9, part 2 |
| 摘 要： |
This paper compares the turning and stationary groove configurations of oil lubricated journal bearings used in hard disk drive (HDD) spindle motors under transient contact conditions, such as at startup and shutdown. With rapidly expanding applications for HDDs, spindle motors are required to have lower friction and wear while driving more disks, and be downsized at the same time. It has been known for some time that the turning groove bearing outperforms the stationary groove bearing with regard to friction torque in steady-state operations. However, the friction and wear of the two configurations under the transient contact conditions are still not well understood. To clarify this, we used a model previously proposed and validated experimentally to determine the motion of the turning member in the bearing by simultaneously solving the nonlinear differential equations of motion, the pressure-compliance relationship of elastic-plastic roughness contact, and the average flow Reynolds equation. The different characteristics of the turning and stationary groove configurations are then discussed for both herringbone groove and multi-taper bearings.
本文比较了用于硬盘驱动器（HDD）主轴电机的油润滑滚珠轴承在启动和关闭等瞬态接触条件下的旋转式槽与固定式槽结构。随着硬盘驱动器应用的迅速扩展，主轴电机需要在驱动更多磁盘的同时，降低摩擦和磨损，并实现体积减小。长期以来已知，在稳态运行条件下，旋转式槽轴承的摩擦扭矩优于固定式槽轴承。然而，这两种结构在瞬态接触条件下的摩擦和磨损情况仍未得到充分理解。为阐明这一问题，我们采用一种此前提出并经实验验证的模型，通过同时求解运动学非线性微分方程、弹性-塑性粗糙接触压力-顺应关系以及平均流动雷诺方程，来确定轴承中旋转部件的运动状态。随后，针对鱼骨形槽和多锥形轴承，对旋转式槽与固定式槽结构的不同特性进行了讨论。 |
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