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Abstract
Some initial observations are made on the application of elastohydrodynamic theory and the Blok flash temperature criterion to cylindrical involute worm gears consisting of phosphor bronze wormwheels driven by casehardened steel worms. It is shown that deliberately introduced stress maldistributions can cause predictable pitting in wormwheels and use is made of an S/N curve for phosphor bronze to estimate the surface fatigue life of some wormwheels.
The theoretical work is supported by exploratory tests using both worm gears and a disc machine. Some results of film thickness measurements are included.
It is shown that, within the limits of design and manufacturing practicalities, the behaviour of worm gears can be predicted quantitatively.
The theory and experimental results have been presented with a view to stimulating interest in and, it is hoped, more rigorous studies of, this somewhat neglected field.
Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Houston, Texas, October 14–16, 1969
Notes
Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Houston, Texas, October 14–16, 1969