Browse Prior Art Database

Alignment Centering Fixture

IP.com Disclosure Number: IPCOM000073457D
Original Publication Date: 1970-Dec-01
Included in the Prior Art Database: 2005-Feb-22
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Wilk, RH: AUTHOR

Abstract

This alignment-centering fixture operates on a four point location principle by which a square part, such as a ceramic substrate, is aligned to theoretical "X-X" and "Y-Y" lines and theoretical center point regardless of the dimensional part variations. This is accomplished by the action of an actuating slide upon two locating slides which operate to insure an equal distance from the theoretical center point to locating pins throughout the travel of the slides. The inherent accuracy is enhanced and increased sensitivity is obtained by the use of ball bearing movements and a "break type" lever.

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Alignment Centering Fixture

This alignment-centering fixture operates on a four point location principle by which a square part, such as a ceramic substrate, is aligned to theoretical "X-X" and "Y-Y" lines and theoretical center point regardless of the dimensional part variations. This is accomplished by the action of an actuating slide upon two locating slides which operate to insure an equal distance from the theoretical center point to locating pins throughout the travel of the slides. The inherent accuracy is enhanced and increased sensitivity is obtained by the use of ball bearing movements and a "break type" lever.

The apparatus is operated by means of a lever 10 which has a tension spring 12 located thereon to give a particular break point. The break point is determined by the tension of the spring 12 and the selected tension is determined by the amount of pressure that can be tolerated on the part being centered. The lever 10 operates an actuating slide 14 which is mounted and slides on ball bearings 16 along guide rails 18. Two slots 20,22 in the actuating slide 14 in conjunction with ball bearings 24 provide the cam action of the arrangement. The ball bearings 24 are attached to the bottom or locating slides 26,28 which cause movement of these locating slides in the same plane as the actuating slide 14, as shown in diagram A by arrows. The slots 20,22 are arranged such that the movement of the actuating slide 14 will cause a movement of the below locate...