Browse Prior Art Database

Disk Centering Tool

IP.com Disclosure Number: IPCOM000037554D
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Graves, MP: AUTHOR [+2]

Abstract

The disk centering tool centers hard magnetic disks and spacers, between the disks, during assembly of disk drives. The disks and spacers are loosely preassembled on a hub attached to a center shaft and are centered by three-point contact with the disk periphery that positively aligns the rotational axis of the disks to the centerline of the shaft.

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Disk Centering Tool

The disk centering tool centers hard magnetic disks and spacers, between the disks, during assembly of disk drives. The disks and spacers are loosely preassembled on a hub attached to a center shaft and are centered by three- point contact with the disk periphery that positively aligns the rotational axis of the disks to the centerline of the shaft.

The operator places the disk subassembly on the centering tool; locating shaft 1 in the bushing 4. The operator actuates a button which starts the sequence. Slide 5 advances to the positive stop 6 by air cylinder 11. This moves finger 12 inward. Finger 12 precenters spacer 3 within approximately one mm of centered position -- rotational disk axis to centerline of the shaft.

Air cylinder 8 rotates rings 7 and actuates arm 9 which move the finger 10 that centers the disk 2. By this method each disk is centered independently and acts as a stop for its independent centering.

The operator then places the clamp ring (not shown) on the hub and secures it to the hub.

Air cylinder 8 retracts ring 7 so that spring 14 can move the finger 10 back into a controlled area. Air cylinder 11 retracts slide 5 and thus finger 12.

To center multiple disks, a cylinder, ring and finger structure may be implemented for each disk being centered.

(Image Omitted)

Disclosed anonymously.

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