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Designing Dynamically Interacting Parts

IP.com Disclosure Number: IPCOM000077622D
Original Publication Date: 1972-Aug-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bullock, JG: AUTHOR [+2]

Abstract

In the design of mechanically interacting parts, it is normally desirable to minimize wear. Wear between machine parts or between machine parts and workpieces is often caused by contact or sliding friction. Wear can be reduced by controlling or eliminating areas of contact and sliding friction. In order to control or reduce areas of contact and sliding friction, such areas must first be identified.

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Designing Dynamically Interacting Parts

In the design of mechanically interacting parts, it is normally desirable to minimize wear. Wear between machine parts or between machine parts and workpieces is often caused by contact or sliding friction. Wear can be reduced by controlling or eliminating areas of contact and sliding friction. In order to control or reduce areas of contact and sliding friction, such areas must first be identified.

One means of identifying areas of wear is by coating one interacting part with fluorescent dye. A noncoated part or workpiece, after interacting with a coated part, is examined under ultraviolet light. Points of contact are found to have picked up traces of fluorescent material which fluoresce under the ultraviolet light. Areas of contact thus identified are then modified to control the amount of contact.

Useful fluorescent materials include coumarins substituted in the 7-position as, for example, 7-diethylamino - 4-methylcoumarin. The dye material can be dissolved in a solvent as, for example, a 1% alcohol solution. Dyes of this type provide such thin coatings, on the order of a microinch, that they do not appreciably affect clearances between high tolerance parts.

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