Process for assembling a clamp ring to a disk stack assembly

Details Process for assembling a clamp ring to a disk stack assembly Process for assembling a clamp ring to a disk stack assembly

1996-08-26

1998-03-10

Vo, Peter

Metal working

Method of mechanical manufacture

Electrical device making

29447, 360 9808, 360 9912, G11B 17038, B23P 1102

Patent

active

057247188

ABSTRACT:
A process for assembling a clamp ring to a disk stack assembly of a computer disk drive unit. The clamp ring includes a lower surface which includes an arcuate rolling contact surface that uniformly distributes a load applied to the clamp ring to components of the disk stack assembly underlying the clamp ring without damaging such disk stack components on load-induced flexion of the clamp ring. A cantilevered section of the clamp ring is disposed radially inwardly of the arcuate rolling contact surface, and is defined by a portion of the lower surface which is raised relative to an adjacent portion of the arcuate rolling contact surface so as to not contact the underlying disk stack components on load-induced flexion of the clamp ring. In use, the clamp ring is heated and then placed over the disk stack components to be clamped together. An axial load is applied to the clamp ring which causes it to flex and thus move contact between the lower surface of the clamp ring and the underlying disk stack components radially along the arcuate rolling contact surface. The axial force is maintained until the clamp ring cools sufficiently to hold the clamp ring in place, and then the axial load is removed.

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"Clamping of Magnetic Disk Stack with a Top Ring" IBM Technical Disclosure Bulletin, vol. 25, No. 3A, Aug. 1982, pp. 1108-1109.

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