公开(公告)号：WO2014204942A1

公开(公告)日：2014-12-24

申请号：PCT/US2014/042707

申请日：2014-06-17

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： LEUTHOLD, Hans ,  FLORES, Paco G. ,  WOLDEMAR, Chris

IPC: G01B5/14 ,  G01B21/16

CPC classification number: F16C33/107 ,  F16C17/107 ,  F16C2370/12

Abstract: Alignment of read/write heads with the storage tracks in disk drive memory systems allows disks to be designed with greater track densities, thereby allowing smaller disks and/or increasing the storage capacity of the disks. Spindle motors having fluid dynamic bearings situated between, for example, a shaft and sleeve support a hub and disk for rotation, thereby assisting rotational accuracy. In fluid dynamic bearings, also referred to as hydrodynamic bearings, a lubricating fluid may be provided between a fixed member bearing surface and a rotating member bearing surface of the disk drive. Disk drive hydrodynamic bearings are sensitive, for example, to external loads and mechanical shock. As a result, the stiffness of the fluid dynamic bearing affects the support of a rotating load on the spindle during wobble or tilt.

Abstract translation: 读/写磁头与磁盘驱动器存储器系统中的存储轨迹的对准允许将磁盘设计成具有更大的磁道密度，从而允许更小的磁盘和/或增加磁盘的存储容量。 具有位于例如轴和套筒之间的流体动力轴承的主轴电动机支撑用于旋转的轮毂和盘，由此有助于旋转精度。 在也称为流体动力轴承的流体动力轴承中，润滑流体可以设置在固定部件支承面和盘驱动器的旋转部件支承面之间。 磁盘驱动器流体动力轴承是敏感的，例如外部负载和机械冲击。 结果，流体动力轴承的刚度在摆动或倾斜时影响主轴上的旋转负载的支撑。