Browse Prior Art Database

X-Y Theta - Quad Buckling Beam Probe Positioner

IP.com Disclosure Number: IPCOM000119909D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 3 page(s) / 108K

Publishing Venue

IBM

Related People

Bird, K: AUTHOR [+3]

Abstract

In multilayered ceramic substrate test equipment one of the primary problems is the alignment of the buckling beam probes to the product features. Product distortion measurements have determined that the probes must be aligned in the X-Y-theta and quad axes. This disclosure is for a unique system designed and built to accomplish this probe motion.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 70% of the total text.

X-Y Theta - Quad Buckling Beam Probe Positioner

      In multilayered ceramic substrate test equipment one of
the primary problems is the alignment of the buckling beam probes to
the product features.  Product distortion measurements have
determined that the probes must be aligned in the X-Y-theta and quad
axes.  This disclosure is for a unique system designed and built to
accomplish this probe motion.

      A unique system has been designed and built to provide the X-Y-
theta and quadrant adjustment for buckling beam probes.  This system
is shown in Figs. 1-5.  The system consists of a series of plates and
rings.  The base plate 1, the Y axis plate 2, the X axis plate 3,
the theta ring 4, and the quadrant ring 5. The motion for the X and
Y axes are provided by face cams with steps ground into them 6.  The
X and Y cams are 3.0 in diameter and have 81, .0005 in steps 7
ground into the face. This provides for a total of  .020 in travel
for the X and Y axes.  The theta axis is driven by a similar face
cam to that of the X and Y axes; however, the theta cam has 21
steps each with .003 in 8.  This results in a total theta travel of
 .58 degree.  The quadrant axis motion is accomplished through the
use of a quad ring.  This ring 9 consists of a set of 4 slides
at 90o apart from each other.  These 4 slides move radially in and
out as the quad ring rotates.  This motion is provided by a ring with
wedge drives.  As the ring rotates, the wedges slide in ground...