The Impact of Geometry Errors on the Motion Transmission of Dual Path Gearing

Pacana, Jacek; Pacana, Andrzej

doi:10.12913/22998624/65134

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…The results show that the system transmission performance can be greatly improved after modification. Pacana and Pacana 20 established a dynamic model of power two-branch gear transmission system, described the system geometric error with the tooth profile modification, and finally studied the influence of geometric error on its dynamic characteristics. Yang et al 21 proposed a dynamic excitation calculation method of herringbone gear pair considering actual contact state to study the influence of modification parameters on time-varying meshing stiffness and friction excitation under 3D modification.…”

Section: Introductionmentioning

confidence: 99%

Study on nonlinear dynamic characteristics of power six-branch herringbone gear transmission system with 3D modification

Wang

2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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The power six-branch herringbone gear transmission system has the advantages of large power transmission and transmission ratio. Because of its multi-way transmission and over-constraint structure, to prevent loaded tooth interference, there are large backlashes between teeth. The system shows complex nonlinear dynamic characteristics under the influence of backlashes, which seriously affects meshing performance. The modification technology can effectively improve gear meshing performance. Hence, on the basis of optimizing meshing performance of the active pair of the six-branch herringbone gear transmission system, this article will combine 3D modification with system nonlinear vibration characteristics and propose an analysis method of the system nonlinear vibration characteristics under 3D modification to reduce vibration and noise. First, the 3D modified tooth surface equation is determined by forming grinding, the loaded transmission error (LTE) of the system's active pair is obtained by tooth contact analysis (TCA) and loaded tooth contact analysis (LTCA) technology, and the optimal modification parameters are obtained by Ant Lion Optimizer (ALO) with the minimum error amplitude as optimization objective. Then, the time-varying meshing stiffness of system under the optimal modification is calculated, and the pure torsional nonlinear dynamic model with backlashes, meshing stiffness, and static transmission error (STE) is established. Finally, the global vibration characteristics in parameter field are studied through time domain and bifurcation diagram of system. Results show that the 3D modification can eliminate edge contact of tooth and improve tooth contact performance. With the increase of input power, the root mean square (RMS) values of acceleration increase and the RMS values and jump decrease after 3D modification. With the increase of input speed, the RMS curves appear multiple resonance peaks and jumps at low input speed. After 3D modification, the RMS, jump, and resonance peak values decrease. Compared with level І, the backlashes and STEs of level II and phase difference ϛsII have great influence on system dynamic characteristics and easily make system in chaotic motion, while the 3D modification reduces their influence and makes system motion periodic.

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Section: Introductionmentioning

confidence: 99%

Study on nonlinear dynamic characteristics of power six-branch herringbone gear transmission system with 3D modification

Wang

2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…Several theoretical studies on gear stresses have been conducted where pitch and profile errors where combined, [10][11][12][13][14][15] while others focused solely on pitch errors. [16][17][18] Many of these studies have treated spur gears. [10][11][12][13][16][17][18] Li 11,12 performed a series of studies based on a finite element method (FEM) analysis of a gear set under static conditions.…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18] Many of these studies have treated spur gears. [10][11][12][13][16][17][18] Li 11,12 performed a series of studies based on a finite element method (FEM) analysis of a gear set under static conditions. The studies showed how manufacturing errors can give rise to increased contact pressure.…”

Section: Introductionmentioning

confidence: 99%

“…Pressure distributions of the entire tooth, including contact pressure, have been presented as the result of FEM analyses. 14,15,17,18 Wei et al 14 and Franulovic et al 16 relate tolerance classes to the magnitudes of manufacturing errors used in their numerical examples. Luo et al 19 directly use the helix slope deviation measurement as a parameter in the calculations of load distribution and root stress.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of manufacturing error tolerances on contact pressure in gears

Hjelm

Hansson²,

Ahadi

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Gear manufacturing always results in some degree of manufacturing errors, i.e. deviations from the desired gear geometry. These errors alter how the gears mesh, typically causing increased contact pressure which in turn shortens service life. It is therefore crucial to choose tolerances such that excessive contact pressure, and especially tip contact, is avoided. With increasing demands due to electrification, this becomes even more important. The aim of this paper is to study how pitch error and profile slope error affect the contact pressure in spur gears sets. The meshing is simulated using a novel simulation approach that uses a parametric description of the reference profile and gear geometry, and a hybrid model for the compliance. The method includes tooth modifications such as tip relief, and uses the true geometry to find contacts. Thus, it also handles contact outside the nominal line of action, including tip contact. The study includes cases where a gear is subjected to both pitch error and profile slope error simultaneously. Numerical examples, relevant to the automotive industry, show the outcome of the simulations. It is shown how simulation-based tolerances for relevant industrial applications can be used to improve manufacturing outcome.

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Study on the dynamic behavior of herringbone gear structure of marine propulsion system powered by double-cylinder turbines

Jiao

Zou

et al. 2021

Sci. China Technol. Sci.

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The Impact of Geometry Errors on the Motion Transmission of Dual Path Gearing

Cited by 5 publications

References 11 publications

Study on nonlinear dynamic characteristics of power six-branch herringbone gear transmission system with 3D modification

Study on nonlinear dynamic characteristics of power six-branch herringbone gear transmission system with 3D modification

Influence of manufacturing error tolerances on contact pressure in gears

Study on the dynamic behavior of herringbone gear structure of marine propulsion system powered by double-cylinder turbines

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