منابع مشابه
Optimization of Face-Hobbed Spiral Bevel Gears to Improve EHD Lubrication
In this study, an optimization methodology is presented to systematically define optimal tooth modifications introduced by head-cutter geometry and machine tool settings to simultaneously maximize the EHD load carrying capacity of the oil film and to minimize power losses in the oil film of facehobbed spiral bevel gears. The presented optimization procedure relies heavily on the EHD lubrication...
متن کاملThe Mathematical Model of Spiral Bevel Gears - A Review
The spiral bevel gear (SBG), with its high contact ratio, high strength and smooth driving, is widely used to transmit dynamic power in various mechanical products, including vehicles, mining machinery, aerospace engineering, and helicopters [1] to [4]. Typical SBGs are shown in Figs. 1a and b. The SBG has been a subject of research for almost a century, and there is a significant amount of lit...
متن کاملInfluence of dynamic behaviour on elastohydrodynamic lubrication of spur gears
In this study, the elastohydrodynamic lubrication (EHL) behaviour of high-speed spur gear contacts is investigated under dynamic conditions. A non-linear time-varying vibratory model of spur gear pairs is introduced to predict the instantaneous tooth forces under dynamic conditions within both the linear and non-linear operating regimes. In this model, the periodically time-varying gear mesh st...
متن کاملEfficiency and temperature of spur gears using spray lubrication compared to dip lubrication
Increased machine efficiency is a requirement in today’s world and geared transmissions are no exception. A back-toback gear test rig was used to compare dip lubrication with spray lubrication regarding gearbox efficiency, mesh efficiency, gear temperature and surface roughness. Gears lubricated at the inlet of the mesh show a lower measured temperature when compared to spray lubrication at the...
متن کاملCooling and Lubrication of High-speed Helical Gears
Centrifugal compressor and turbine manufacturers are building machines that operate at increasingly higher speeds to reduce the size and cost of their equipment. Helical gears are commonly used to step down the speed of these machines to match nominal motor and generator speeds. The demand for higher compressor and turbine speeds has resulted in an increase in the maximum pitch line velocities ...
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ژورنال
عنوان ژورنال: Bulletin of JSME
سال: 1964
ISSN: 0021-3764,1881-1426
DOI: 10.1299/jsme1958.7.243