Browse Prior Art Database

Adaptive Test Fixture

IP.com Disclosure Number: IPCOM000060421D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Cummins, AW: AUTHOR [+3]

Abstract

A technique is described whereby an adaptive test fixture is used to properly position the personal computer back panel during the testing and registration marking of personal computers. During the assembly and testing functions of the personal computer, precise alignment is required between the personal computer back panel and the test equipment as the computer advances during the automatic testing procedures. The adaptive test fixture allows tolerance variations to exist and allows precise alignment. As the pallet-mounted personal computer proceeds to the test station, a tooling ram begins to move the adaptive test fixture toward the back panel of the personal computer. The adaptive test fixture uses pre-reference blocks 10, as shown in Fig.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 90% of the total text.

Page 1 of 2

Adaptive Test Fixture

A technique is described whereby an adaptive test fixture is used to properly position the personal computer back panel during the testing and registration marking of personal computers. During the assembly and testing functions of the personal computer, precise alignment is required between the personal computer back panel and the test equipment as the computer advances during the automatic testing procedures. The adaptive test fixture allows tolerance variations to exist and allows precise alignment. As the pallet-mounted personal computer proceeds to the test station, a tooling ram begins to move the adaptive test fixture toward the back panel of the personal computer. The adaptive test fixture uses pre-reference blocks 10, as shown in Fig. 1, which are positioned onto floating plate 11, so as to engage the edge of the personal computer back panel. Spherical tendon ends 12 and compression springs 13 provide reduced contact force so as to permit frictionally unrestrained translation of floating plate 11 with respect to fixed references. Continued motion of the entire assembly allows the adaptive test fixture to precisely position the entire assembly until contact points are established and maintained by the action of compression springs 13. With the precise alignment completed, testing and marking device 14, as shown in Fig. 2, is then actuated to proceed with the next operation. The adaptive test fixture is unique in that no feedback devi...