Browse Prior Art Database

Disk Stack Imbalance Improvement

IP.com Disclosure Number: IPCOM000116976D
Original Publication Date: 1995-Dec-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Nakamoto, T: AUTHOR [+4]

Abstract

Disclosed is using special shape hub and operation to improve disk stack imbalance.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Disk Stack Imbalance Improvement

      Disclosed is using special shape hub and operation to improve
disk stack imbalance.

      Usually the outer shape of hub is just circle and disk inner
also is circle.  There is clearance between hub and disk inner dia
for assembly.  This clearance is the major imbalance factor.  Because
this clearance allows for disk to be moved incocentric to hub center.

      This T.D.B.  is to remove this clearance to improve imbalance.
The shape of hub is designed as Fig. 1.  The diameter of hub is same
as the inner diameter of disk.  The disk assembly process is as
follow.
  1.  install disk into spindle motor hub incocentricity (Fig. 2).
  2.  push disk toward hub center (Fig. 3).
  3.  fasten disk clamp.

      These special hub and assembly operation could improve disk
stack imbalance to remove the clearance between hub and disk.