Browse Prior Art Database

Constrained Layer Damper Spring Assemblies

IP.com Disclosure Number: IPCOM000119356D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Cooper, TP: AUTHOR [+3]

Abstract

This article describes a method of manufacturing batches of multi-layer springs described as 'constrained-layer damped springs' for anti-vibration suspensions, such as disk file head/disk enclosures and similar precision-sprung devices. Due to the laminated construction requirement of the metal skins on the outside and the flexible layer of polymeric material with adhesive coating on both surfaces of a damper, the current labor intensive and tedious processes needed to achieve economic assembly.

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Constrained Layer Damper Spring Assemblies

      This article describes a method of manufacturing batches
of multi-layer springs described as 'constrained-layer damped
springs' for anti-vibration suspensions, such as disk file head/disk
enclosures and similar precision-sprung devices. Due to the laminated
construction requirement of the metal skins on the outside and the
flexible layer of polymeric material with adhesive coating on both
surfaces of a damper, the current labor intensive and tedious
processes needed to achieve economic assembly.

      The disclosed method employs chemical and photo-etching
techniques to produce simultaneously profiled assemblies by
double-sided etching.  Both sides of a pre-laminated and
adhesive-coated sheet or panel of suitable size are etched for
optimum yield.  The etching process penetrates and dissolves unwanted
material from the outside skins to produce outer and inner profiles
including holes and apertures.

      An advantage of the process is the stress-free condition of the
metal skins which can prevent buckling, curl and other unwanted
blemishes otherwise caused.  The functional benefit to the finished
part is that the edges are free from burrs normally associated with
press- blanked and laser-cut parts made from laminated materials.
Such burrs, if allowed to link the outer skins, can affect damping
characteristics.

      Referring to the figure, the raw material, such as stainless
steel 1, should be pre-clean...