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Swage Boss with Slits

IP.com Disclosure Number: IPCOM000111992D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Katoh, M: AUTHOR [+3]

Abstract

This article describes a swage boss 1 of a mountplate 3 (Fig. 1). The swage boss 1 has some slits or notches. The number of these slits and the shape are properly determined.

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This is the abbreviated version, containing approximately 100% of the total text.

Swage Boss with Slits

      This article describes a swage boss 1 of a mountplate 3 (Fig.
1).  The swage boss 1 has some slits or notches.  The number of these
slits and the shape are properly determined.

      Fig. 2 explains the swaging process.  A ball 2 is used to fix a
head suspension 4 to an actuator arm 5 (Fig. 3) of a Hard Disk Drive.
The ball diameter is slightly larger than the hole diameter of
mountplate boss.  When the swage ball 2 passes through the hole, the
part around the boss is led by its force to deform the mountplate of
all suspension.

      As a result of the deformation, the suspension's pressing load
comes to influence the "Flying Height" of a head 6 on a disk (not
shown).  "Flying Height" is one of the key parameters for the
performance and reliability of the Hard Disk Drive.

      By forming slits in the swage boss, the caulking volume and the
passing load of the swage ball are decreased.  Therefore, mountplate
deformation can be minimized.