Analysis of a cycloid speed reducer

Malhotra, S.K.; Parameswaran, M.

doi:10.1016/0094-114x(83)90066-6

Cited by 94 publications

(54 citation statements)

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“…The first researcher to work on mathematical modelling of efficiency was Kudrijavcev, [1]. Kudrijavcev dedicated an entire chapter to cycloid reducers in his book Planetary transmissions, [1].Malhotra , based on Kudrijavcev's mathematical model, made a new model for determining the efficiency which considers the losses in power on each roller of the central gear individually, as well as on every output roller individually, [2]. Kosse tested how efficiency influences a multiple increase in the input torque, [3].…”

Section: Introductionmentioning

confidence: 99%

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Determining efficiency of cycloid reducers using different calculation methods

et al. 2019

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Cycloid reducers are gear trains which can be classified as planetary transmissions. These transmissions have a very wide range of uses in industry in transporters, robots, satellites, etc. This research presents a comparative analysis of three analytical methods for determining cycloid drive efficiency. The paper explores every mathematically formulated method and compares them to experimental results from literature. The presented methods for determining efficiency have a common property, in that they all determine losses due to friction on the bearing cam surface of the shaft, the rollers of the central gear and the output rollers. The calculation of efficiency values is done for standard power values. The methods differ primarily in the way they calculate losses. For each method of calculating efficiency there is an analysis of pros and cons. The paper concludes with suggestions as well as possible directions for further research.

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Section: Introductionmentioning

confidence: 99%

“…For the theoretical determination of efficiency three representative methods can be highlighted: Malhotra method [2], Gorla method [4,5], and Kudrijavcev method [1]. Every one of these methods has a verification in available literature.…”

Section: Introductionmentioning

confidence: 99%

Determining efficiency of cycloid reducers using different calculation methods

et al. 2019

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“…Cycloidal speed reducers belong to a new generation of mechanical gears. They are widely used in modern industry due to their good performances (reliable life-span, compact design, high efficiency, high gear ratio, etc) [4][5][6][7]. Geometric and kinematic properties of cycloidal speed reducers have been described thoroughly in the literature [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behaviour of a Two-Stage Cycloidal Speed Reducer of a New Design Concept

2018

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Traditional cycloidal speed reducers (with two cycloid discs per one stage, mutually turned by an angle of 180°) are well known for their remarkable dynamic stability. This paper analyses dynamic behaviour of a two-stage cycloidal speed reducer of a new concept, in which only one cycloid disc is used for each stage in order to further enhance its compactness. Lagrange's displacement equations have been used to develop independent dynamic models for both the first and the second stage (six degrees of displacement freedom for the first stage, and eight degrees of displacement freedom for the second stage). A normal force acting at the contact of the cycloid disc teeth and the corresponding ring gear roller has been taken as an excitation force. For the newly designed two-stage cycloidal speed reducer, systems of differential displacement equations of the first and second stage have been solved using the Matlab -Simulink software package. A comprehensive analysis of the obtained diagrams of elastic dynamic contact forces of the first and second stage has revealed a certain analogy. In terms of dynamics, the cycloid disc of the second stage behaves similarly to the cycloid disc of the first stage. Since these cycloid discs are mutually turned by an angle of 180°, it can be concluded that from the aspect of the cycloid disc load, the two-stage cycloidal speed reducer of a new design concept exhibits good dynamic balance and stability.

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“…Propositions of a cycloid generation with the elimination of lobes undercutting was proposed at [6][7][8][9][10][11]. There is also some work dedicated to the power loss and efficiency calculation [12][13][14]. The article [15] tries to give a unified approach to the designer how to optimize any cycloidal gear in comparison to other gear transmissions.…”

Section: Introductionmentioning

confidence: 99%

Experimental vibration test of the cycloidal gearbox with different working conditions

Wikło¹,

Olejarczyk²,

Kołodziejczyk³

et al. 2017

Vib. proced.

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Abstract. The article undertakes the problem of vibrations induced in the cycloidal gearbox. The gearbox was calculated, designed and tested by the article authors. To perform the test a testing bench was built. The bench includes electric motors, torque meters and application to control working parameters. The input engine works at constant velocity mode and the braking unit with constant torque mode. The test was made for different configuration of working parameters.

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Analysis of a cycloid speed reducer

Cited by 94 publications

References 0 publications

Determining efficiency of cycloid reducers using different calculation methods

Determining efficiency of cycloid reducers using different calculation methods

Dynamic Behaviour of a Two-Stage Cycloidal Speed Reducer of a New Design Concept

Experimental vibration test of the cycloidal gearbox with different working conditions

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