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Recent advances in the speed and memory capacity of current computers combined with H- -adaptive finite element theory permit the development of more realistic finite element gear strength models. The speed and memory improvements allow for increased...

This paper investigates the following present globoidal wormgear drives: (i) original and modified Hindley wormgear drives; (2) Wildhaber worngear drive with inclined plane teeth of wormgear; (3) inclined plane and cone enveloping globoidal wormgear drives; (4) piane,...

From the balance between tbe generated heat io a gear box and the dissipated beat from the gear case surface the mean value for the expected lubricant temperature can be evaluated. The maximum oil temperature in a...

Finite element analyses were performed during design and development of the F22 AMAD gearbox to ensure a design free of damaging resonant responses within its operating speed range. Ideally, design with respect to resonance characteristics would bave...

For years, the intemational gear manufacturing industry has been pushing machine manufacturers to develop an economical realizable tooth flank modification that is made in contact direction, with a soft transfer from the modified to unmodified sections of...

An experimental and analytical study of spiral bevel gears operating in an aerospace environment has been performed. Tests were conducted within a closed loop test stand atNASA Lewis Research Center. Tests were conducted to 537kW (720 hp)...

Two groups of spur gears mandamred from two different materias and heat treatments were endurance tested for swhcefatiguelife. One group wasmanufacturedfiom AISI 1552andwas fínished -dto 0.4 pm (16ph) mis d a c e nnishaud the0 diial fquency...

Mis- -matched involute profiles are recognized as a cause of tooth meshing noise. This paper traces a noise reduction process applied to a consumer product with anoisy gear set consisting of apowder metal (P/M) pinion driving amolded...

Plastic gearsoften breakat thetip ofthetooth. To theknowledge oftheauthors, there is no satisfactory explanationof that breakage mode yet. An hypothesis put forward in this paper to explain the tooth breakage at the tip is the interferenceon theback ofthe...

The optimisation of thekinematicalbehaviour ofspiral bevel gearshas been thefocus of muchattentionover thepast years. The objectives, aimingto optimizethekinematics ofspiral bevelgears underno load,being zeroor closeto zero motion error coupled to a parabolic motionerror curvehave been fulfilledby many authors ....