Disk drive with profiled attachment of a spindle and hub

Details Disk drive with profiled attachment of a spindle and hub Disk drive with profiled attachment of a spindle and hub

1994-03-21

1995-10-17

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9807, G11B 1702

Patent

active

054596289

ABSTRACT:
A technique for joining a hub and a spindle of a disk drive is disclosed wherein the hub and spindle are joined by an interference fit. The interface between the hub and the spindle is provided with a surface contact pattern having a zone of contact extending about the spindle of the disk drive motor in the form of a circle or a very narrow height cylinder. Extending either unidirectionally or bidirectionally from the continuous zone of contact are zones of surface contact alternating with zones of relief which eliminate contact between the hub and the spindle. The continuous contact zone circumscribing the spindle of the drive motor insures that the hub is anchored relative to the spindle and anchors the hub to prevent tilting or cocking of the hub with respect to the spindle and spin axis of the spindle. By preventing cocking or tilting of the hub, any resultant cocking or tilting of the disk stack is prevented thereby improving the operation and reliability of the disk drive and preventing disk stack wobble and track misregistration.

REFERENCES:
patent: 4503530 (1985-03-01), Hinlein et al.
patent: 4717977 (1988-01-01), Brown
patent: 4754353 (1988-06-01), Levy
patent: 4819105 (1989-04-01), Edwards
patent: 4910620 (1990-03-01), Olbrich
patent: 4928029 (1990-05-01), Wright
patent: 5031061 (1991-07-01), Hatch
patent: 5091809 (1992-02-01), Conners et al.
patent: 5136450 (1992-08-01), Moir
patent: 5148338 (1992-09-01), Fruge
patent: 5160865 (1992-11-01), Gururangan

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