Load Capacity of Worm Gears

Miltenović, Vojislav; Banić, Milan; Miltenović, Aleksandar

doi:10.1007/978-94-007-6558-0_9

Cited by 3 publications

(3 citation statements)

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“…The total losses of the power transmission can be expressed as the sum of the partial power losses in the meshing of the worm and worm gear, losses in bearings, losses in contact seals, losses in lubricant, etc. Losses in teething, from the tribological aspect, represent the dominant losses, that is, they take part in the largest percentage of the total power losses of the worm gear [18,19].…”

Section: Introductionmentioning

confidence: 99%

The influence of worm gear material and lubricant on the efficiency and coefficient of friction

Skulić,

Bukvić,

Gajević

et al. 2024

trobomat

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This paper presents the results of experimental tests of the efficiency of a single-stage worm gear. Two worm drives were used for testing, where the worms are made of improved steel 42CrMo4 and the worm gears are made of tin bronze CuSn12 and aluminium alloy A356. The values of the efficiency were determined at different values of revolutions and loads, where oils of different viscosities were used for lubrication. Determining the efficiency, the coefficient of friction of worm drives was calculated for experimental operating conditions, as well as the mass measurement of worm gears before and after testing. Based on the experimental results, depending on the operating mode and oil viscosity, the values of the efficiency of the worm drive made of the material 42CrMo4/CuSn12 are higher by 5 to 9 % compared to the worm drive 42CrMo4/A356. Higher values of the efficiency of the worm drive 42CrMo4/CuSn12 cause lower values of the coefficient of friction by 14 to 21 % as well as less wear of the worm gears.

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Section: Introductionmentioning

confidence: 99%

The influence of worm gear material and lubricant on the efficiency and coefficient of friction

Skulić,

Bukvić,

Gajević

et al. 2024

trobomat

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“…If the rails are in a good condition, radial adjustment systems can be used, depending on the geometry of the connected profiles wheel and the rails, with partial use of the mass inertia. However, due to the predominantly worn state of the rail track, a negative effect of using this technical solution is possible and consists in an increased uneven wear of the wheels [40][41][42][43][44][45]. The operation of the railway vehicle and the application of the proposed PKS wheel design relate not only to the running of the rail vehicle through curves, but also to running through crossings and switches.…”

Section: Introductionmentioning

confidence: 99%

Improving the energy efficiency of a tram’s running gear

et al. 2023

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This research analyses the influence of some design features of an undercarriage of a tram on the energy efficiency in terms of mechanical energy losses during its operation. The work includes the comparison of results of the research from two main points of view, namely from a running gear design and a railway wheel design. Two variants of a tram’s bogie are investigated. A standard bogie and a bogie with a system that allows a radial adjustment of the wheelsets in curves. Two designs of a railway wheel are compared, a wheel with the traditional construction scheme and a wheel with a perspective construction scheme. The values of mechanical energy losses due to slippage in the contact between the wheels and rails are analysed. These losses are obtained with reference to a specific route and the value of the average power dissipated. Moreover, an analysis of advantages and disadvantages of bogie designs has made it possible to consider the most appropriate bogie design in terms of ensuring the energy efficiency. In this case, the bogie design with the wheels with the perspective construction scheme can be considered as the optimal option.

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“…Because of the contact line between flanks occurs relatively large sliding. Meshing is realized with oil layer between the flanks which decreases the internal dynamic forces, with vibration damping [1][2]. This benefit primarily relates to worm gear sets with greater efficiency [3].…”

Section: Introductionmentioning

confidence: 99%

Load capacity of worm gear transmission from aspect of maximal use of available resources

2017

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Abstract.Worm gear transmission has number of advantages over the other types of transmission (high transmission ratio, compact design, high load capacity, vibration damping, reliability, etc.) and thus is widely used as drives in application with short-term load and for the transmission of movement. Previous studies in this area show that in their work can occur a larger number of damage forms that are limiting the load capacity of this drives and that can be identified based on the condition of working surfaces. The occurrence of any limit state represents the termination of work function, no matter that resources for other limit states are not reached. Theoretically, the best use of transmission would be if the load capacity for all limit states has uniform use. The paper is focusing a detailed analysis of the load carrying capacity of worm gear transmission from aspect of the available resources.

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Load Capacity of Worm Gears

Cited by 3 publications

References 1 publication

The influence of worm gear material and lubricant on the efficiency and coefficient of friction

The influence of worm gear material and lubricant on the efficiency and coefficient of friction

Improving the energy efficiency of a tram’s running gear

Load capacity of worm gear transmission from aspect of maximal use of available resources

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