Browse Prior Art Database

Robot System for Circuit Board Wiring Change

IP.com Disclosure Number: IPCOM000060189D
Original Publication Date: 1986-Mar-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Campagna, FJ: AUTHOR [+2]

Abstract

This article describes an apparatus for making design changes on a circuit board or to repair a circuit board. Location of circuitry lines (conductors) laminated in circuit boards is done using the vias (through-board connections) as location points. The vias are produced on boards on a grid accurately positioned to accept electronic components. Using this via grid on the board one can locate specific vias and thus specific conductors laminated into the board. Changes are made to the board by drilling out conductors that use respective vias as pad sites and effectively relocating the pad or conductor by means of discrete wires added to the board. The apparatus shown in the figure is designed to locate the specific via for making the design change. The apparatus includes a motorized X-Y-Z Table 10.

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Robot System for Circuit Board Wiring Change

This article describes an apparatus for making design changes on a circuit board or to repair a circuit board. Location of circuitry lines (conductors) laminated in circuit boards is done using the vias (through-board connections) as location points. The vias are produced on boards on a grid accurately positioned to accept electronic components. Using this via grid on the board one can locate specific vias and thus specific conductors laminated into the board. Changes are made to the board by drilling out conductors that use respective vias as pad sites and effectively relocating the pad or conductor by means of discrete wires added to the board. The apparatus shown in the figure is designed to locate the specific via for making the design change. The apparatus includes a motorized X-Y-Z Table 10. The X and Y stages 12 and 14 provide the planar motion for a camera 16 and drill 18. The TV camera is set up to provide an enlarged view of a via site 20 and a microdrill bit to drill-out a conductor to be cut. The operator locates the via to be processed via a microprocessor 22 and monitor 24 which views the enlarged via site. The via is located via the pre-programmed microprocessor system which has in its memory the grid network dimensions. Thus, the processor can recall and on- demand, signal the X-Y Table to move the board to the via requested. The TV camera 16 then captures the via site area and, using its lens system, m...