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Investigation on the mechanical behavior of planetary roller screw with the effects of external loads and machining errors
Abstract: Planetary roller screws are the key mechanical components used in linear motion and could be subjected to radial and axial loads in application. However, the effect of radial force on load distribution and fatigue life has not been considered in previous studies...
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2021-06-24
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Wear Compensation and Backlash Regulation of Precision Worm Drive Pair
Worm drive is a main form of mechanical transmission. It has the advantages of wide transmission ratio range, compact structure, small-for-size, stable movement and low noise. In addition to being widely used in power transmission, it is also the preferred component of precision circular indexing mechanism of machine tools and precision instruments...
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2021-05-25
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Development and Classification of Worm Drive
Abstract: The development of worm drive is reviewed, and the advantages and disadvantages of various worm drives are described. This paper classifies the worm drive from three aspects: the shape of the original body, the position and meshing area of the tooth part and the tooth profile of the original surface in the worm drive...
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2021-05-25
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Analysis of Bearing Characteristics of Differential Planetary Roller Screw
Abstract: The analysis of bearing characteristics of differential planetary roller screw is carried out based on space meshing theory and Hertz contact theory, the influence of contact position change caused by the initial meshing point offset between the roller and the screw on the bearing characteristics is comprehensively considered, the spatial meshing geometry model of the differential planetary roller screw is established, and the meshing point position and principal curvature of the roller and the screw are solved by numerical method. Furthermore, the single roller screw tooth surface accurate load distribution and carrying capacity calculation geometric model are deduced...
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2021-05-25
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