Browse Prior Art Database

Crossbar Compliant Guide

IP.com Disclosure Number: IPCOM000109139D
Original Publication Date: 1992-Jul-01
Included in the Prior Art Database: 2005-Mar-23
Document File: 1 page(s) / 53K

Publishing Venue

IBM

Related People

Felde, SL: AUTHOR [+3]

Abstract

Lateral alignment of the tape in a small form factor tape transport is achieved by applying a spring force to the edge of tape through a wear button. The spring is made to be most flexible in the direction of the lateral motion of the tape, thereby providing only a gentle restoring force.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 86% of the total text.

Crossbar Compliant Guide

      Lateral alignment of the tape in a small form factor tape
transport is achieved by applying a spring force to the edge of tape
through a wear button.  The spring is made to be most flexible in the
direction of the lateral motion of the tape, thereby providing only a
gentle restoring force.

      A thin spring arm having a low spring rate achieves the gentle
action in the primary bending direction, but not without introducing
a similarly low spring rate in the torsional direction.  (See figure
1.)

      The existence of the massive wear button at the end of the
compliant arm can cause the mass-spring system to resonate at the
resonant frequency of the system.  Such resonance can result in a
loss of tape guiding performance, damage to the edge of tape, and
undesirable audible vibrations.  This resonance can occur in both the
primary bending and the torsional directions.

      By increasing the resonant frequency, the energy of the
vibration can be minimized, thus minimizing the impact on compliant
guide performance.  While the resonant frequency could be increased
by increasing the stiffness of the spring arm, such stiffening would
be undesirable by making the restoring force less gentle.

      The approach described here is to stiffen the spring arm in the
torsional direction by the addition of a cross member between the
wear buttons, while leaving the spring rate low in the primary
bending direction, thus permittin...