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Previously known calculation methods permit the compen-sation of nominal ~ actual deviations on flank surfaces of spi-ral bevel and hypoid gear sets on the basis of correction matrixes.' These are expanded forms of well known pro-portional changes,...

Face milling and face hobbing are the two principal processes used in the production of bevel and hypoid gears. A manufacturer must decide on one or the other. This paper defines the methods and the inherent characteristics...

Processes in chemical industries and power plant stations require to a certain extent variable speed drives of high power capacity. In contrast to controlled hydrodynamic or friction clutches a new system of hydrostatic controlled superimposed planetary gears...

This paper deals with the design of helical gears that have minimum transmission error and, at the same time, are less sensitive to manufacturing errors. The paper addresses two stages in design: 1) Design generation stage where...

Test results with a high speed four square gear test rig (nmax* =26 000 rpm) show the influence of speed, viscosity, base oil, type and amount of additive on the scuffing load. In some cases at high...

The ART program is structured in two phases. The first phase involves four contracts and is considered the preliminary design and component validation phase.This phase allows each contractor to develop advanced design concepts which incorporate key advanced...

Rapid and destructive failures of high quality, high speed, lightweight and highly loaded aircraft gears are indication of the vibrational energy (associated with neutral frequency modes) exceeding the fatigue endurance limit of advance gear materials. This paper...

Polishing wear has been known to occur on piston rings， cylinder bores, valve lifters， hydraulic components, rolling- -element bearings and gear teeth. The bright, polish surfaces may look good, but polishing wear is detrimental because it is...

In the first part, this document describes all the types and aspects of wear which can occur on the gear teeth in operation, with causes and explanations concerning their appearance. For each type of wear, the possible...

Worm-gear drives have been subject of intensive research. Geometry of worm-gear dr ives with ground worm surf aces and worm surfaces generated by blades have been. developed by (Litvin, 1968). (Winter et al, 1981) and (Octrue,1988) have...