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Design and Application of the Worm Gear

William P. Crosher
William P. Crosher
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ASME Press
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The principle form of damage observed in worm gearing is surface deterioration on the flanks of the gear wheel teeth. Frequently the explanation for such phenomena is the transmission of a torque in excess of the capacity of the gearset. Torque determines the level of pressure exerted on the material surfaces. Exceedingly high pressure on a small wheel area leads to early pitting of the wheel teeth and/or cracking of the worm-thread surface. The load capacity, when related to wear, is based on the tooth flanks resistance to wear and pitting when they are subjected to the tooth flanks imposed...

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