Contact Strength Calculation of Straight Bevel Precessional Gears with Small Shaft Angle

  • V. Syzrantsev
  • A. PazyakEmail author
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Straight bevel precessional gears with a small shaft angle are a principally new type of bevel gears. It has a lot of great characteristics such as high efficiency due to multi-pair tooth meshing—high torque. A straight bevel precessional gear with a small shaft angle mainly has a wide range of gear ratios (100 and more) and small starting torque compared to worm and spiroid gearboxes. Furthermore, the straight bevel precessional gear with a small shaft angle can better adapt to the oil and gas industry because transmission provides a high loading capacity which is necessary in the Far North and Arctic climates. According to the Hertz contact theory, this paper described the final formula for contact strength of straight bevel precessional gears with a small shaft angle. The contrast analysis of contact strength between the straight bevel precessional gear with a small shaft angle and cylindrical gear and worm gear was investigated by computer simulation. The results reveal that the straight bevel precessional gear with a small shaft angle has a high loading capacity and contact strength in tooth meshing. The results of this paper can be used for the design and production of these types of gearboxes.


Precessional gearbox Straight precessional bevel gear with a small shaft angle Contact strength Loading capacity 


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Industrial University of TyumenTyumenRussia

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