Free Standards Download

In this paper, a combination of loaded tests, coordinate measurements, surface reverse engineering and a special finite element method is employed to study the effect of break-in wear on meshing contact between the mating surfaces of worm...

High speed epicyclic gearboxes used in gas turbogenerators are typically designed with either carburized and hardened or nitrided gears. Each of these types of gear has its own merits and limitations. While carburized and hardened gears offer...

Early stages of micropitting were examined on experimental gears designed for surface fatigue studies by the AGMA Helical Gear Rating Committee. Optical profilometer, SEM and metallographic examinations were conducted on the first prototype gearset tested. The gearset...

As micropitting of gears has become increasingly recognized as a cause of gearbox failures, gear manufacturers have begun to require documentation of gear oil micropitting performance. The German FVA Procedure No. 54, currently the only industry recognized...

Much is being reported about the form and shape of running gears, little, however, about the same featuresof splines and serration, although the latter, too, are installed in every automobile. It is, of c0urse.a well- known fact...

Primary-level calibration of master gears requires quantifying the measurement uncertainty on the artifact being calibrated by a method that does not rely on a transfer comparison. The measurement decomposition method, developed jointly by National Institute of Standards...

A modified geometry of face-milled spiral bevel gears with uniform and tapered teeth that provides a localized bearing contact, reduces the level of noise and increases the strength of the teeth has been developed. The modified geometry...

Controlled Shot Peening has long been recognized as a very effective process to prolong the fatigue life of all types of gears. Three recent innovations have extended the state of the art: 1) by a process that...

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,...