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Robot Orientation of Symmetrical Parts for Assembly

IP.com Disclosure Number: IPCOM000040832D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Frohman, RJ: AUTHOR [+3]

Abstract

In automated assembly, care must be exercised not to misassemble machine parts which superficially appear symmetrical, but require a particular orientation to function. This is accomplished by designing parts with a machine sensible notch to provide a reference point for the robot.

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Robot Orientation of Symmetrical Parts for Assembly

In automated assembly, care must be exercised not to misassemble machine parts which superficially appear symmetrical, but require a particular orientation to function. This is accomplished by designing parts with a machine sensible notch to provide a reference point for the robot.

The figure shows a PC Card used in a printer. It is seen that, except for notch 1, it is geometrically symmetrical with reference to the horizontal center-line 2, and since the two sides of the card look alike, its orientation is easily confused by man and machine. The non-functional, off-center notch 1 is provided solely as a reference point for the robot. The robot has the ability to test for the presence of the notch at the expected point, and if the notch is not sensed, turn the card over before proceeding with assembly.

It is apparent that this concept is applicable in other more complex situations, where the part is symmetrical with respect to other axes, by providing the robot with the ability to rotate the part on one or more axes as required to bring the reference notch to the correct position.

Disclosed anonymously

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