Browse Prior Art Database

ROBOT AUTO BOUNCE CORRECTION FOR PAR? PLACEMENT

IP.com Disclosure Number: IPCOM000007272D
Original Publication Date: 1994-Oct-01
Included in the Prior Art Database: 2002-Mar-08
Document File: 3 page(s) / 97K

Publishing Venue

Motorola

Related People

Joseph O'Keeffe: AUTHOR

Abstract

Robots for placing through hole odd parts is a specialist art and technology. There are many varia- bles involved in manufacturing the parts, feeding the parts and gripping the parts.

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Technical Developments Volume 23 October 1994

ROBOT AUTO BOUNCE CORRECTION FOR PAR? PLACEMENT

by Joseph O'Keeffe

BACKGROUND repeatedly grip the part consistently.

  Robots for placing through hole odd parts is a When the robot travels to the predefined place- specialist art and technology. There are many varia-
bles involved in manufacturing the parts, feeding

ment point it may not get the part directly into the hole as the part location on the gripper is not the parts and gripping the parts. consistent.

Ah these variables add up to large variables which Misplacements as this can be corrected by a well lead to misplacements. used method, i.e. bounchrg the parts into the hole.

                             It uses a sensor on the gnpper to detect whether the This invention leads to more accurate placement part is in the hole or not. i.e. The robot tries a and reduced placement cycle time. sequence of points about the original programmed placement point until the robot eventually gets the

KNOWN TECHNOLOGIES part into the hole.

  One well used technology is to visually inspect the part to locate it and thereby get better place- ment. The disadvantages are that vision systems are expensive and to inspect a part takes time. i.e. it increases the cycle time ofplacement.

This system of retrying takes time and can increase the cycle time enormously.

  This invention will reduce the number of bounces required to get the part into the hole and use some statistical calculations tn change the robots pro- grammed place point. Therefore the robot will try the best placement point first, thereby reducing cycletime. As the variables in the process change the robot will correct itselfaccordingly.

SUMMARY

  When robotically placing odd through hole parts there are many variables involved. Therefore...