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Extending the Benefits of Elemental Gear Inspection - July 2009

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Archive > 2009 > July 2009 > Extending the Benefits of Elemental Gear Inspection

The article "Extending the Benefits of Elemental Gear Inspection" appeared in the July 2009 issue of Gear Technology.

Summary
It may not be widely recognized that most of the inspection data supplied by inspection equipment, following the practices of AGMA Standard 2015 and similar standards, are not of elemental accuracy deviations but of some form of composite deviations. This paper demonstrates the validity of this “composite” label by first defining the nature of a true elemental deviation and then, by referring to earlier literature, demonstrating how the common inspection practices for involute, lead (on helical gears), pitch, and, in some cases, total accumulated pitch, constitute composite measurements.

Keywords
inspection, metrology, measurement, elemental inspection, composite inspection, involute measurement, lead measurement, pitch measurement, total accumulated pitch, composite measurement

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