Disk drive comprising a notched disk clamp for improved disk balance
AssigneeWestern Digital Technologies, Inc.
InventorsShan-Shuong Chiou, Yao-Hsin Huang
Life of this patent
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Abstract
A disk drive is disclosed comprising a disk, a spindle motor for rotating the disk, and a head actuated radially over the disk. A disk clamp clamps the disk to a hub of the spindle motor, wherein the disk clamp comprises a notch at a predetermined location along an outer diameter of the disk clamp. The disk is aligned non-concentric with the hub such that a center of the disk is aligned offset from a center of the hub toward the notch. The notch substantially counteracts an imbalance due to the non-concentric alignment of the disk with respect to the hub.
Claims8
A disk drive comprising:
- (a) a disk;
- (b) a spindle motor for rotating the disk, the spindle motor comprising a hub
- (c) a head actuated radially over the disk;
- and
- (d) a disk clamp for clamping the disk to the hub, the disk clamp comprising a notch at a predetermined location along an outer diameter of the disk clamp, wherein:
- the disk is aligned non-concentric with the hub such that a center of the disk is aligned offset from a center of the hub toward the notch;
- the notch substantially counteracts an imbalance due to the non-concentric alignment of the disk with respect to the hub;
- and
- an interior diameter of the disk presses against an outer diameter of the hub at location substantially opposite the location of the notch.
A method of manufacturing a disk drive comprising the steps of:
- (a) placing a disk onto a hub of a spindle motor;
- (b) placing a disk clamp over the disk, the disk clamp comprising a notch at a predetermined location along an outer diameter of the disk clamp;
- (c) biasing the disk in a planar direction toward the notch;
- and
- (d) securing the disk clamp to the hub, wherein:
- the disk is aligned non-concentric with the hub such that a center of the disk is aligned offset from a center of the hub toward the notch;
- and
- the notch substantially counteracts an imbalance due to the non-concentric alignment of the disk with respect to the hub.
Dependencies are inferred from the claim text.