Research of gear drives

Dobreva, A.; Dobrev, Vasko; Mollova, G

doi:10.1088/1757-899x/1220/1/012025

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…The research work presented in [13,14] delivers additional results in the field of worm gear investigation. These publications present essential studies of worm gear sets as components of driving systems.…”

Section: Significant Advanced Methods For Worm Gear Optimization Rese...mentioning

confidence: 99%

Advanced Design Optimization Procedures for Worm Gear Drives

Dobreva¹,

Dobrev²,

Mollova³

2023

Atlantis Highlights in Engineering

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Concerning the optimization design of worm drives, it is especially important to achieve maximum output power of the gear set, which depends particularly intensively on the efficiency coefficient of the worm gear meshing. The purpose of the study presented is to create advanced design optimization procedures concerning the output power of the worm gear, taking into account nine design variable parameters and several significant mechanical constraints. The variable parameters selected are: number of starts for the worm, number of teeth of the worm gear, center distance, sliding speed and friction coefficient for the meshing, lead and tooth friction angles, permissible contact stresses for the pair of worm and worm gear materials, appropriate values of the safety factors. The research methodology applied includes four different stages, which are briefly described. The research results obtained are analyzed. The conclusions and recommendations deduced are related and focused to the objectives of future research work of the author's team.

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Section: Significant Advanced Methods For Worm Gear Optimization Rese...mentioning

confidence: 99%

Advanced Design Optimization Procedures for Worm Gear Drives

Dobreva¹,

Dobrev²,

Mollova³

2023

Atlantis Highlights in Engineering

View full text Add to dashboard Cite

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Development of a Dynamic Model for Calculating the Kinematic Error and Evaluating Its Effect on the Efficiency of Planetary Mechanisms With Rolling Bodies

KAPITONOV

2023

MMMM

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When studying the characteristics of the mechanisms of small-sized drives, an important task is to develop ways to increase the efficiency of the mechanism. The article discusses theoretical issues related to the influence assessment of kinematic error on the efficiency of gears with rolling bodies. As a result of the research, a generalized dynamic model of planetary ball and roller mechanisms is obtained, taking into account kinematic errors, linking manufacturing errors or elastic deformations and kinematic transmission error. Mathematical dependences of the dynamic model of mechanisms with rolling bodies are derived. The model was tested on the example of calculating the kinematic error of a single-stage planetary ball transmission. Polynomial equations with constant coefficients are obtained for determining kinematic errors from the influence of manufacturing errors of transmission links. It is established that for different kinematic schemes, gear ratios and angular velocities of planetary mechanisms with rolling bodies, the transmission efficiency can vary significantly depending on its kinematic error. For gear ratios from 1.5 to 5, drive shaft rotation speeds from 1,500 to 3,000 rpm, depending on the highest values of the kinematic error from 0.00175 to 0.0349 radians, the transmission efficiency within the driven shaft rotation can decrease from 0.93 to 11 %. At the same time, transmissions constructed according to the sixth kinematic scheme have the highest efficiency values. The average efficiency value per revolution of the driven shaft from the influence of kinematic errors can decrease up to 5 %. Graphs of the dependences of transmission efficiency on their kinematic errors are given.

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Research of gear drives

Cited by 2 publications

References 5 publications

Advanced Design Optimization Procedures for Worm Gear Drives

Advanced Design Optimization Procedures for Worm Gear Drives

Development of a Dynamic Model for Calculating the Kinematic Error and Evaluating Its Effect on the Efficiency of Planetary Mechanisms With Rolling Bodies

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