Abstract
The requirements posed to high-dynamic steering electric drives are presented. The importance of carrying out strength analysis already at the scientific research stage is shown. The study object is described from the viewpoint of strength analysis. An electric drive mechanism including a reduction gear and a ballscrew is considered as the study object. The advantages of using ballscrews in electric drives of this type of are shown. A number of ballscrew geometric parameters are presented. Analytical calculation of the ballscrew for contact stresses, its strength calculation (for determining the stresses in gear pins and teeth) and fatigue strength calculation in accordance with the electric drive operating mode parameters and duration, and calculation for its cyclic fatigue are carried out. Electric drive design documentation has been elaborated, and the drive prototype sample has been made. Practical studies and tests were carried out, the results of which have confirmed the correctness of the accomplished calculations of the electric drive electrical mechanism in all drive operation modes.
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