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Browse Prior Art Database

Yaw Assembly for Probing Modified Thermal Conduction Modules at Board Level in a Machine Environment

IP.com Disclosure Number: IPCOM000034180D
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-26
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Gorman, RE: AUTHOR [+3]

Abstract

This article describes a mechanism that automatically rotates a ground strap and fiber-optic bundle 180 degrees to provide contact of the ground strap to modified thermal conduction modules (TCMs). The drawing is a perspective view of the yaw assembly of this disclosure connected to a probe arm by means of a mounting bracket. The probe arm is attached to a precision "X-Y-Z" robotic-positioning system. A computer command, based on map data of the TCMs, will direct a rotary actuator to rotate 180 degrees. This will turn bevel gears which, in turn, will rotate a probe holder. With fiber-optic bundle, spring-loaded electrical probe, ground strap and pressure switch attached to the probe holder, as the robotic-positioning system moves in the "Z" direction, the electrical probe and ground strap will make contact with the TCM.

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Yaw Assembly for Probing Modified Thermal Conduction Modules at Board Level in a Machine Environment

This article describes a mechanism that automatically rotates a ground strap and fiber-optic bundle 180 degrees to provide contact of the ground strap to modified thermal conduction modules (TCMs). The drawing is a perspective view of the yaw assembly of this disclosure connected to a probe arm by means of a mounting bracket. The probe arm is attached to a precision "X-Y-Z" robotic- positioning system. A computer command, based on map data of the TCMs, will direct a rotary actuator to rotate 180 degrees. This will turn bevel gears which, in turn, will rotate a probe holder. With fiber-optic bundle, spring-loaded electrical probe, ground strap and pressure switch attached to the probe holder, as the robotic-positioning system moves in the "Z" direction, the electrical probe and ground strap will make contact with the TCM. The robotic-positioning system will continue in the "Z" direction until the spring-loaded electrical probe exerts a pre- set force on the pressure switch which will tell the positioning system to stop the "Z" movement. The pressure switch is pre-set to the correct force so as not to damage the TCM. The fiber-optic bundle is connected to a closed circuit TV to allow the operator to view the probe tip and contact point on the TCM simultaneously. The contact point on the TCM is approximately five thousandths of an inch square.

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