Browse Prior Art Database

Head Suspension Assembly Datum Clamping

IP.com Disclosure Number: IPCOM000121813D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 1 page(s) / 46K

Publishing Venue

IBM

Related People

Lao, MV: AUTHOR

Abstract

Described is a unique method of clamping a Datum's feature in which measurement would be taken on the opposite side. The Datum's feature is not visible to the measurement machine.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 88% of the total text.

Head Suspension Assembly Datum Clamping

      Described is a unique method of clamping a Datum's feature in
which measurement would be taken on the opposite side. The Datum's
feature is not visible to the measurement machine.

      This unique method of fixturing would solve the problem of
Datums that are not located on the same side where the critical
measurements are made on the Head Suspension Assembly.

      This type of fixturing is currently being designed and built
for inspecting the critical parameters of head suspension assemblies.

      Measurement of this critical dimension (slider location and
others) would be done by an optical measuring machine. The optical
measuring machine would pick up a hole's features and measure it
accordingly.  This fixture is designed to allow us to use the above
measuring machine to determine the outside diameter (for the datum)
of the head suspension assembly indirectly.

      The clamping ram is clamped, with a (pin-size) hole, to hold
the mount plate outside diameter.  At the same time, there are two
holes located on the V notch (fixed jaws) of the fixture, as shown in
the figure.  Using the optical measuring machine, it will measure the
relative distances of these holes to calculate the center line and
the outside diameter of the swage hole.  This data would be used to
establish the datum line.

      This would also enable us to measure the outside diameter of
the mount plate (indirectly) when a kn...