Options for Self-Braking and Modification of the Cylindrical Self-Braking Gears

Authors: Timofeev G.A. Published: 13.01.2024
Published in issue: #4(147)/2023  

DOI: 10.18698/0236-3941-2023-4-55-67

Category: Mechanical Engineering and Machine Science | Chapter: Machine Science  
Keywords: helical spur gears, worm gears, self-braking, forward run efficiency


Helical gears are being widely used in mechanical engineering, since their performance characteristics are superior to the spur gears. Methods for geometric and strength calculations of helical gears are known, but dependencies included in them are used, as a rule, at inclination angles of up to 60°. Region of the larger angles was not yet sufficiently studied. However, it is in the region of the angle high values that the gears acquire many useful properties, for example, high gear ratio due to possibility of significant down to unity reduction in the number of gear teeth, or the possibility of self-braking. This phenomenon is being used in technology for a long time; it is widely applied in screw--nut gears and worm gears, since it allows, by combining the functions of motion conversion and automatic braking, to create simple and compact designs for the machine and device drives. At the same time, worm gears are characterized by low efficiency of forward motion, significant heating and wear of working surfaces, they require introduction of antifriction materials, which, as a rule, have low load-bearing capacity. In this regard, the urgent task is to increase forward motion efficiency of the cylindrical self-braking gear mechanisms. The existing modifications of cylindrical self-braking gears are reviewed and systematized, two new modifications and their properties are described. Conditions for a new version of self-braking and recommendations for using modifications of cylindrical self-braking gears are provided

Please cite this article in English as:

Timofeev G.A. Options for self-braking and modification of the cylindrical self-braking gears. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2023, no. 4 (147), pp. 55--67 (in Russ.). DOI: https://doi.org/10.18698/0236-3941-2023-4-55-67


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