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Browse Prior Art Database

Magnetic Head Discrete Vibration Damper/ Tuner

IP.com Disclosure Number: IPCOM000109051D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2005-Mar-23
Document File: 1 page(s) / 36K

Publishing Venue

IBM

Related People

Grometer, GF: AUTHOR

Abstract

Disclosed is a device for damping and/or tuning out spurious mechanical vibrations inherent in the DASD magnetic-head arm assembly structure. These vibrations, caused by multiple mechanical resonances in the structure, result in track mis-registration due to disruption of the servomechanism feedback signal.

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

Magnetic Head Discrete Vibration Damper/ Tuner

      Disclosed is a device for damping and/or tuning out spurious
mechanical vibrations inherent in the DASD magnetic-head arm assembly
structure.  These vibrations, caused by multiple mechanical
resonances in the structure, result in track mis-registration due to
disruption of the servomechanism feedback signal.

      The invention consists of a discrete mass of suitable damping
material which is bonded to the slider-flexure interface with an
adhesive.  Prior to this invention a non-discrete mass consisting of
a fillet of adhesive was used to achieve this damping/tuning
function.

      The advantages of this invention over existing methods are:
      a.   The discrete damper/tuner is consistently the same size
for all assemblies manufactured.
      b.   The invention does not require operator judgement for its
application.
      c.   Because the damper mass does not consist primarily of
adhesive, its material properties and geometry can be tailored to the
specific application.
      d.   The invention is adaptable to automated or mechanized
assembly operations.
      e.   The discrete damper can be installed in less time.
      f.   The discrete damper itself can be easily produced by such
methods as extruding, molding, casting, or similar methods.

      Disclosed anonymously.