FIELD: mechanical engineering.
SUBSTANCE: cylindrical gearwheel has a shape of a cylinder, a hub with a keyway groove and a rim with gears. The shape of a cylinder is obtained by a generatrix, when it is rotated around the axis. Gears, relatively to the generatrix, are made in the form of an ellipse element, expressed by a ratio 
, where: B is the width of the gearwheel rim, A is the largest convexity in x=B/2, x is the distance from the end of the gearwheel to the point in question, A and B/2 are ellipse semi-axes.
EFFECT: increase in the reliability of a gear transmission is achieved.
1 cl, 2 dwg
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