RELATIVE SLIDING IN MULTIPLE PAIR CONVEX-CONCAVE CONTACT OF TEETH, WITHIN PRECESSIONAL GEARING

Viorel BOSTAN, Ion BOSTAN, Maxim VACULENCO, Mihail ȚOPA

Abstract


The paper describes the study of the relative sliding in the convex-concave contact of multiple pair conjugated teeth in precessional gearing with straight and inclined  teeth. The paper presents the influence of the gearing parameters defined by configuration on the geometry of the teeth contact and the difference of the flank curves, as well as the influence of the change in the shape of the teeth by shortening their height on the reduction of the relative sliding with friction in the contacts ki of the pairs of teeth simultaneously conjugated to one and same angular coordinate  of the crank shaft. The energy losses in the gears are analyzed according to the relative sliding with friction between the flanks of unitary or simultaneously multiple pair conjugated teeth, as well as the bearing capacity of the convex-concave contact of the teeth depending on the difference in the flank curves. The experimental researches were carried out on samples of transmissions with the central wheels and the satellite made of various tribo-couples of plastic-metal materials with the application of different lubrication regimes with plastic lubricants and liquid one. Samples of kinematic and low-power precessional transmissions are presented in the paper.


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References


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