Stepless gears with intermediate bodies with the stable mechanical characteristic

Abstract

The stepless gears (variators of speed) are widely applied in different machines that allow executing an optimum regime of machine operation and by that to increase their productivity. The mechanical stepless gears (variators) can be of two types: friction, transmitting a torque by friction forces, and variators of engagement, which can transmit large power, at the expense of joint action of tangent and normal forces. Chain variators, in which the catching on bodies are arranged in a circuit, and disk variators, in which the catching on bodies are arranged in disks are studied. In variator working engagement, power dissipations and more stable reduction ratio are less. In essence this type of variator consists of a pair of dentate conical disks with teeth of different height of the convex-concave shape and yoke, in which the intermediate bodies are arranged. One of the disks is captured on the arbor, the other can be displaced in an axial direction. The rollers can also be displaced in an axial direction. The basic characteristics of the variator are listed.