Browse Prior Art Database

Performance Enhancement of the Auto Punch Tool

IP.com Disclosure Number: IPCOM000107730D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 75K

Publishing Venue

IBM

Related People

Egan, JP: AUTHOR [+4]

Abstract

Disclosed is a model to reduce shocks and vibration in the auto punch tool, enhance tool reliability, product quality, and satisfy future substrate product that requires 16 x 16 punch head matrix while the current one is 12 x 12.

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This is the abbreviated version, containing approximately 53% of the total text.

Performance Enhancement of the Auto Punch Tool

       Disclosed is a model to reduce shocks and vibration in
the auto punch tool, enhance tool reliability, product quality, and
satisfy future substrate product that requires 16 x 16 punch head
matrix while the current one is 12 x 12.

      The developed model is designed to absorb shocks and vibration
that cause tool performance degradation.  The model consists of new
mounting technique of the electrical connectors (see figure) and
their feeding cables.  The plug of the connector is fixed to the
casting Z-bridge, while the receptacle is connected to the die
through a set of shock damping springs.  Thus, shocks and vibration
created at the die are damped before reaching the connectors, their
feeding cables, and other locations of the tool.  Also, weights of
connectors and cables are removed from top of the die which reduces
the magnitudes of shocks and vibration.

      Damping of shocks and vibration at various locations of the
tool was measured to be up to 93.604g% where g = 9.8m/s2 is the
gravity acceleration.  The damping expression is given by

                            (Image Omitted)

where a and b determine the area of the element under shocks and
vibration.  Bmn-at is the damping factor of various harmonics and
decreases as a increases with the distance from the source of shocks
and vibration.

      Increase in reliability of mechanical and electrical
continuities o...