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Hard Disk Spindle Motor Assembly Process with Ultra-violet Adhesive in Nitrogen Atmosphere

IP.com Disclosure Number: IPCOM000110522D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Aungmaneechote, S: AUTHOR [+3]

Abstract

Disclosed here is a technique aimed at reducing the time required in the assembly process of a hard disk spindle motor by using nitrogen to stimulate the hardening process of the adhesive.

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This is the abbreviated version, containing approximately 57% of the total text.

Hard Disk Spindle Motor Assembly Process with Ultra-violet Adhesive in Nitrogen Atmosphere

       Disclosed here is a technique aimed at reducing the time
required in the assembly process of a hard disk spindle motor by
using nitrogen to stimulate the hardening process of the adhesive.

      The ultra-violet (UV) adhesive used in this spindle motor
assembly, containing radical reaction base which, after filling up a
narrow gap like the gap between a bearing and its shaft, will be
activated by metallic ion on the surface of the metal and then its
hardening process will start.  And, by using UV light, the hardening
process can be stimulated further.  In the assembly process of the
spindle motor, for instance, the UV adhesive is used in assembly
process of bearings-shaft.

      The proposed process is an assembling process in nitrogen
atmosphere.

      In the normal atmosphere, oxygen will hinder the radical base
from doing its hardening.  Accordingly, it can be thought that, by
shutting out the oxygen, the hardening reaction can proceed more
quickly and completely.

      The process for assembling a hard disk spindle motor as shown
in the figure will be as follows:
      1) Absorption of anti-corrosive from the internal ring of a top
bearing.
      2) Applying primer to the internal ring, (to dissolve the metal
into metallic ions).
      3) Applying the adhesive bond to a shaft.
      4) Keeping it in the nitrogen environment an...