Abstract
In this paper, in the environment of the Pro/Engineer software package, 3D model of the drive is constructed. FEM analysis package, Pro/Engineer, is used to calculate stress distribution in the elements for the toroidal drive under loads. The stress distributions on worm, stator and planet for the drive are obtained. Changes of the stress distribution along with planet rotating angle and planet number are presented. The results show: The load share among the contact tooth pairs is not uniform. The maximum stress in the stator is larger than that in the worm. As planet rotates, stress distribution on the stator and worm changes periodically. At two teeth mesh zone, the maximum stress on the stator or worm is larger than that at three teeth mesh zone. Increase of the planet number can reduce stress in the toroidal drive. It is because uniform stress distribution and more sharing points of the load.
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