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The paper presents some research on the design of the asymmetric gears, special gears with involute asymmetrical teeth. The aim of these researches is to establish the influence of the angles of the asymmetrical gear rack upon some geometrical and functional parameters of the gears. We have used, as design method, the direct gear design, followed by the gear rack design, considering that asymmetric gears are not conventional gears, so the design method it is not the standard one. The results that are presented was obtained by using a computer modelling program, for asymmetric gears, in MatLab, and for one can see the asymmetric gears and the zone of the tooth action, a computer program in AutoLISP is developed. Based on the computer applications developed for determinate the geometrical parameters and for representing the teeth and gears models, the asymmetric teeth pinion and gear can be manufactured. Between the design parameters established at starting the described process there are the angles of the asymmetrical gear rack.

The influence of the angles of the asymmetrical gear rack on the geometrical and functional parameters for the pinion and gear with asymmetric teeth