Browse Prior Art Database

Slider/Flexure Attaching Method Using Polymer Sheet

IP.com Disclosure Number: IPCOM000104699D
Original Publication Date: 1993-May-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Aoyagi, A: AUTHOR [+4]

Abstract

Disclosed is a method for attaching sliders to flexures on suspension assemblies used in hard disk drives by using polymer sheets.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 72% of the total text.

Slider/Flexure Attaching Method Using Polymer Sheet

      Disclosed is a method for attaching sliders to flexures on
suspension assemblies used in hard disk drives by using polymer
sheets.

      Generally, sliders are made of ceramic material, and flexures
are made of stainless steel.  Consequently, when head suspension
assemblies are heated, slider crown decreases in bimetal principle,
because thermal expansion coefficient of sliders is smaller than that
of flexures.  If the temperature is too high, slider crown becomes
negative.  This negative crown degrades the head-disk durability
performance in contact start stop drastically.

      If thermal expansion coefficient of slider material is equal to
that of flexure material, there will be no deformation due to
temperature change.  However, it is impossible design material
combination with the same thermal expansion coefficient while
satisfying other requirements.

      However, there will be no crown change if one can soften the
tight adhesion between sliders and flexures even if thermal expansion
of sliders and flexures is different.  For example, by inserting a
polymer sheet between a slider and a flexure as shown in Fig. 1.
This tight adhesion can be softened and the crown change can be
reduced.  By inserting a polymer sheet, as a side effect, the
relative position of the slider to the flexure might shift because
there is no tight coupling between the slider and the flexure.  One
possible counte...