Browse Prior Art Database

Pragmatic Head/Disk Comb Merge

IP.com Disclosure Number: IPCOM000102221D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Hames, JL: AUTHOR [+4]

Abstract

A comb-shaped merge tool was developed, qualified and implemented when the previous tool was observed to be damaging heads and disks, resulting in an elevated field failure rate. Because it is small, simple and does not require supporting hardware, it was quickly executed in manufacturing, allowing sufficient time for hard tool development, while providing prompt improvement in field performance and controlling cost.

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Pragmatic Head/Disk Comb Merge

       A comb-shaped merge tool was developed, qualified and
implemented when the previous tool was observed to be damaging heads
and disks, resulting in an elevated field failure rate.  Because it
is small, simple and does not require supporting hardware, it was
quickly executed in manufacturing, allowing sufficient time for hard
tool development, while providing prompt improvement in field
performance and controlling cost.

      The comb-to-file registration function is accomplished by a
connecting arm 1 (Fig. 1) and integral bearing which pivots about the
same axis 2 as the actuator, and height variability is accounted for
by a set of flexures 3 connecting the arm 1 and comb 4 which is
forced into position by the comb-to-disk contact force during
insertion.

      The head-to-disk merge registration functions are determined by
the stop 5 in Fig. 2 which positions the suspension 6 to comb 4 and
the stop 7 which positions the comb-to-disk outside diameter.

      The low particle generation function is achieved with comb
geometry consisting of a nonparallel surface 8 which does not allow
comb- to-disk burnished area contact, a low, inclined angled surface
9 and a large blended radius surface 10 to reduce contact forces, and
comb material consisting of hardened and polished high-wear-resistant
alloy steel.