Browse Prior Art Database

Disk Module Registration System

IP.com Disclosure Number: IPCOM000086538D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Patel, TR: AUTHOR

Abstract

A disk module has a base casting 1 for supporting disks 2 mounted on hub assembly 3 within a cover (not shown). The hub assembly is secured to spindle 4 terminating in pulley 5. A head/carriage assembly (not shown) is mounted on casting 1 to carry transducing heads to different tracks on the disks 2. The module must be precisely mounted in drive housing 6 in order to couple the head/carriage assembly with an actuator (not shown) mounted in the drive housing for moving the heads in the direction indicated by arrow 7.

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Disk Module Registration System

A disk module has a base casting 1 for supporting disks 2 mounted on hub assembly 3 within a cover (not shown). The hub assembly is secured to spindle 4 terminating in pulley 5. A head/carriage assembly (not shown) is mounted on casting 1 to carry transducing heads to different tracks on the disks 2. The module must be precisely mounted in drive housing 6 in order to couple the head/carriage assembly with an actuator (not shown) mounted in the drive housing for moving the heads in the direction indicated by arrow 7.

The module is mounted by feet 8 and a protruding, notched locating pin 9. Feet 8 rest on coplanar support surfaces 10 and 11 of the drive housing 6, which define a first plane of registration. A second orthogonal plane of registration is provided by the rear surface of bracket 12, against which the locating pin 9 is retained by a bolt and washer. A third orthogonal plane of registration is provided by an upright surface 13 located on support surface 10.

The sole loading force on the module, apart from its weight, is provided by the tension of drive belt 14. The belt is tensioned, in the direction of arrow 15, by the spring loading of the drive motor 16 which is mounted on pivoted plate 17. The tensile force of the belt not only registers the module longitudinally with respect to the rear surface of bracket 12, but also provides a moment tending to pivot the module about pin 9 and to register the side of one foot 8 again...