Browse Prior Art Database

Precision Registration for Robotic Pinned Layup

IP.com Disclosure Number: IPCOM000038345D
Original Publication Date: 1987-Jan-01
Included in the Prior Art Database: 2005-Jan-31
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Chisam, GF: AUTHOR [+3]

Abstract

A registration scheme for robotic application uses a laser light source and a charge-coupled device (CCD) light sensor to locate a slot on a printed circuit board (PCB) and reference it to the CCD to enable a robot to precision locate the PCB on a location pin. A laser light source (not shown) is located inside a location pin 1 (Fig. 1), and projects a light column 2 up through a slot 3 of a PCB (Image Omitted) 4 where the light strikes the CCD light sensor 5. The light column 2, after passing through the slot, is identical to the size and shape of slot 3. A robot arm 6 moves a gripper 7 that holds PCB 4 until slot 3 encounters light column 2.

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Precision Registration for Robotic Pinned Layup

A registration scheme for robotic application uses a laser light source and a charge-coupled device (CCD) light sensor to locate a slot on a printed circuit board (PCB) and reference it to the CCD to enable a robot to precision locate the PCB on a location pin. A laser light source (not shown) is located inside a location pin 1 (Fig. 1), and projects a light column 2 up through a slot 3 of a PCB

(Image Omitted)

4 where the light strikes the CCD light sensor 5. The light column 2, after passing through the slot, is identical to the size and shape of slot 3. A robot arm 6 moves a gripper 7 that holds PCB 4 until slot 3 encounters light column 2. As light column 2 is sensed by CCD 5, attached software reads pixels (picture elements) on CCD 5 that are activated by the light column, calculates the center of the column, and instructs robot arm 6 to precisely place slot 3 over locating pin
1. A block diagram of the circuitry is seen in Fig. 2.

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