Experimental vibration test of the cycloidal gearbox with different working conditions

Wikło, Marcin; Olejarczyk, Krzysztof; Kołodziejczyk, Krzysztof; Król, Kazimierz; Komorska, Iwona

doi:10.21595/vp.2017.19073

Cited by 2 publications

(3 citation statements)

References 14 publications

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“…Average output torque is 22.305 Nm in the second model and 22.378 Nm in the first model. Measurements [3,5] showed fluctuation of the input torque. In MSC Adams the spline, which represents input torque fluctuations was defined and applied as an input torque in the cycloidal gearbox's numerical model.…”

Section: Torque At Output Shaftmentioning

confidence: 98%

“…Numerical simulation showed forces acting on the external and internal sleeves ( Figure 10 and 11 respectively). Important part of cycloidal gearboxes' optimal design [1,3,4,5] is analysis of the forces acting on sleeves. Information obtained during analysis can be used in further fatigue-life analysis of the sleeves in which significant deformations occur.…”

Section: Forces Acting On External Sleevesmentioning

confidence: 99%

“…Fluctuation of the torque at input shaft, measured in experimental stand[3,5] Torque at the output shaft when input torque is with fluctuation (Figure 15) -blue line and when input torque is constant (Table 1) -red line…”

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confidence: 99%

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Kinematics and dynamics of the two stage cycloidal gearbox

Król

2018

atest

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This article presents results of the numerical analysis of cycloidal gearbox, which were obtained in MSC Adams engineering software. Multibody geometry for dynamical analysis was designed in Autodesk Inventor Professional 2017 and imported in MSC Adams. The results of analysis are forces acting on the internal and external sleeves, position, velocity and acceleration of the selected points on the cycloidal gearbox’s moving components. Indirect result is time course of the torque at output shaft which was calculated on the basis of forces acting on the internal sleeves, which are parts of the equilibrium mechanism and displacements of these sleeves. Knowledge about cycloidal gearbox’s loading conditions is important in its design process. Main advantage of a cycloidal gearbox is distribution of the forces on multiple external sleeves, while in majority of other gears only one tooth is in contact at a time.

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Section: Torque At Output Shaftmentioning

confidence: 98%

Section: Forces Acting On External Sleevesmentioning

confidence: 99%

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Kinematics and dynamics of the two stage cycloidal gearbox

Król

2018

atest

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Multibody Dynamics Model of the Cycloidal Gearbox, Implemented in Fortran for Analysis of Dynamic Parameters Influenced by the Backlash as a Design Tolerance

Król

2023

Acta Mechanica Et Automatica

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In this study, dynamical parameters of the cycloidal gearbox working at the constant angular velocity of the input shaft were investigated in the multibody dynamics 2D model implemented in the Fortran programming language. Time courses of input and output torques and forces acting on the internal and external sleeves have been shown as a function of the contact modelling parameters and backlash. The analysis results in the model implemented in Fortran were compared with the results in the 3D model designed using MSC Adams software. The values of contact forces are similar in both models. However, in the time courses obtained in MSC Adams there are numerical singularities in the form of peaks reaching 500 N for the forces at external sleeves and 400 N for the forces acting at internal sleeves, whereas in the Fortran model, there are fewer singularities and the maximum values of contact forces at internal and external sleeves do not exceed 200 N. The contact damping and discretisation level (the number of discrete contact points on the cycloidal wheels) significantly affect the accuracy of the results. The accuracy of computations improves when contact damping and discretisation are high. The disadvantage of the high discretization is the extended analysis time. High backlash values lead to a rise in contact forces and a decrease in the force acting time. The model implemented in Fortran gives a fast solution and performs well in the gearbox optimisation process. A reduction of cycloidal wheel discretisation to 600 points, which still allows satisfactory analysis, could reduce the solution time to 4 min, corresponding to an analysis time of 0.6 s with an angular velocity of the input shaft of 52.34 rad/s (500 RPM).

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Experimental vibration test of the cycloidal gearbox with different working conditions

Cited by 2 publications

References 14 publications

Kinematics and dynamics of the two stage cycloidal gearbox

Kinematics and dynamics of the two stage cycloidal gearbox

Multibody Dynamics Model of the Cycloidal Gearbox, Implemented in Fortran for Analysis of Dynamic Parameters Influenced by the Backlash as a Design Tolerance

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