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Browse Prior Art Database

Clad Metal Hard File Arm

IP.com Disclosure Number: IPCOM000099398D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 1 page(s) / 43K

Publishing Venue

IBM

Related People

Brooks Jr, WW: AUTHOR [+3]

Abstract

Described is a method using a triple layer clad metal arm in a recording head/arm assembly which reduces the number of parts and the overall stocking/packaging height of the parts. Conventional means of fabricating head/arm assemblies involves the use of discrete arms and suspensions, with the suspensions having some type of mount plate for attachment to the arm. The mount plate is attached to the arm by some means, such as screws or ball swaging, creating a useable head/arm assembly. Use of the described method eliminates the need for a separate mount plate. Instead, the suspension load beam is directly welded to the stainless steel surface cladding of the triple layer clad metal arm.

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Clad Metal Hard File Arm

       Described is a method using a triple layer clad metal arm
in a recording head/arm assembly which reduces the number of parts
and the overall stocking/packaging height of the parts.  Conventional
means of fabricating head/arm assemblies involves the use of discrete
arms and suspensions, with the suspensions having some type of mount
plate for attachment to the arm.  The mount plate is attached to the
arm by some means, such as screws or ball swaging, creating a useable
head/arm assembly.  Use of the described method eliminates the need
for a separate mount plate.  Instead, the suspension load beam is
directly welded to the stainless steel surface cladding of the triple
layer clad metal arm.  Since both faces are of stainless steel, load
beams may be welded to both sides of the arm to create single- or
double-sided head/arm assemblies.

      In addition to providing a convenient material for laser weld
attachment of the load beam to the arm, surface layers of stainless
steel also act to improve the bending stiffness of the arm.  The core
of the arm is made from a special aluminum stock, tailored for
metallurgical bonding to the stainless steel faces, and selected to
make the arm as light as possible.  Although the presence of
stainless steel on the faces of the arm does increase the mass
slightly over an all aluminum arm, the increase in arm bending
stiffness more than makes up for this.  The net result is that
useable ratios...