Disc drive spindle motor having tuned stator with adhesive groov

Details Disc drive spindle motor having tuned stator with adhesive groov Disc drive spindle motor having tuned stator with adhesive groov

1998-09-18

2000-08-15

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9908, G11B 1702, H02K 1502

Patent

active

061045705

ABSTRACT:
A disc drive spindle motor includes a central axis, a stationary member, a rotatable member which is rotatable with respect to the stationary member and a bearing interconnecting the rotatable member with the stationary member. A data storage disc is attached to the rotatable member. A stator is supported by the stationary member at an interface for rotating the rotatable member about the central axis with a driving force frequency. The stator has a resonant vibrational frequency. The interface has a plurality of recesses which are spaced axially from one another with respect to the central axis. An adhesive is applied within a selected set of the plurality of recesses and forms a bond between the stator and the stationary member. The set of recesses is selected such that the resonant vibrational frequency is different than the driving force frequency.

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