Disk pack balancing method using spindle hub vibration
OwnerBradley D. Kelemeninventor
Life of this patent
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Abstract
A data storage disc or a disc pack containing one or more discs and spacers can be balanced on a spindle hub of a spin motor in a disc drive simply and economically by means of vibrational centering of the disc around the spindle hub. It has been determined that after the disc or disc pack has been placed on the spindle hub, the spindle hub can be vibrated such that the disc or disc pack are centered on the spindle hub, thus balancing the mass of the disc or disc pack on the spindle hub. The balanced disc or disc pack can then be firmly fastened to the spindle hub.
Claims17
A method for centering and balancing a data storage disc placed on a flanged hub of a spin motor for use in a disc drive, the data storage disc having an inner diameter defining a central aperture slightly larger than an outer diameter of the hub, the method comprising steps of:
- (a) placing a disc on a spin motor hub such that the hub passes through the central aperture of disc;
- and
- (b) vibrating the spin motor hub in a vibrational plane perpendicular to an axis of hub rotation to center and balance the disc.
A method of disc drive assembly comprising:
- installing a spin motor on a disc drive base plate, the spin motor having a generally cylindrical hub having a bottom circumferential flange;
- placing a data storage disc having a central aperture having an inner diameter larger than an outer diameter of the cylindrical hub on the flange;
- and
- vibrating the spin motor hub in a vibrational plane perpendicular to an axis of hub rotation to center the disc on the flange of the hub.
A method of disc drive assembly comprising:
- providing a spin motor having a generally cylindrical hub having a bottom circumferential flange;
- placing a data storage disc having a central aperture having an inner diameter larger than an outer diameter of the cylindrical hub on the flange;
- vibrating the spin motor hub in a vibrational plane perpendicular to an axis of hub rotation to center the disc on the flange of the hub;
- and
- installing the spin motor carrying the vibrationally centered disc on a base plate in a disc drive.
Dependencies are inferred from the claim text.