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Design and Application of Non-Circular Gear with Cusp Pitch Curve [PDF]

Machines, 2022
To solve the design problem of non-circular gears with cusp pitch curves, this paper proposed a new variable-involute and incomplete variable-cycloid composite tooth profile (VIIVC-CTF), deduced the new VIIVC-CTF mathematical model, and constructed the ...
Xiong Zhao, Zhao Xiong
exaly   +2 more sources

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Efficiency of Non-Circular Spur Gears

Transactions of the Canadian Society for Mechanical Engineering, 1983
Continuously variable mechanical transmissions employing non-circular spur gears are presently being developed. Such devices are expected to be as efficient in terms of friction losses as common standard automobile transmissions. Tests were carried out using a specially designed power-circulating gear test apparatus to compare meshing losses for non ...
W.R. Reinhart, R.J. Ferguson, J.H. Kerr
openaire   +1 more source

Unloaded transmission error and instantaneous gear ratio for non-circular gears with misalignments

Mechanism and Machine Theory, 2022
Unloaded transmission error (UTE) determination is well established for gears with uniform motion. This established methodology is modified and applied to the case of non-circular gears. Reciprocity between two screws is introduced as part of this modification. One screw is a wrench defined by the tooth contact force and the other screw is a twist that
Dooner D. B., Mundo D.
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General method for the synthesis of geared linkages with non-circular gears

Mechanism and Machine Theory, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Modler, K.-H., Lovasz, E.-C., Bär, G. F., Neumann, R., Perju, D., Perner, M., Mărgineanu, D.   +6 more
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Synthesis of the Pitch Surfaces of Non-Circular Skew-Gears

Volume 2: 34th Annual Mechanisms and Robotics Conference, Parts A and B, 2010
The subject of this paper is the synthesis of the pitch surfaces of non-circular skew gears, intended to generate any motion program with a periodically varying transmission ratio. This is done by extending an existing algorithm, which was formulated through the application of dual algebra and the Principle of Transference.
FIGLIOLINI, Giorgio, REA, Pierluigi, Angeles J.   +2 more
openaire   +1 more source

Prediction of the Efficiency of Non-Circular Spur Gears

Transactions of the Canadian Society for Mechanical Engineering, 1984
This paper reports predictions and test results which indicate the average loss rate per revolution for non-circular gears can be considered essentially the same as those for circular gears given similar specifications and operating conditions. There is, however, a significant variation in loss rate with respect to non-circular gear angular position.
W.R. Reinhart, R.J. Ferguson, R.G. Delaney   +2 more
openaire   +1 more source

Synthesis of indexing mechanisms with non-circular gears

Mechanism and Machine Theory, 2016
Abstract Indexing mechanism is one of the most important mechanisms in automated machineries. Various kinds of indexing mechanisms have found existence in application, including cam-indexing mechanism, sheaves mechanism, intermittent gear mechanism and so on.
Fangyan Zheng, Lin Hua, Xinghui Han, Bo Li, Dingfang Chen   +4 more
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Kinematic Efficiency of Non-Circular Geared Transmissions

Journal of Mechanical Design, 1981
Infinitely-variable transmissions of high efficiency can be made using non-circular gears combined in function generators. The efficiency of a function generator depends on the gear parameters, the ratio of the differential, and the direction of power flow.
R. J. Ferguson, J. H. Kerr
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The error analysis of non-circular gear hobbing

2010 International Conference on Mechanic Automation and Control Engineering, 2010
The paper shows the modle of the machining error analysis of non-circular gear, and proposes a standard of determining the cumulative errors,which is based on the CNC hobbing principle of non-circular gear and the linkage plan of the CNC hobbing machine of the non-circular gears for the issues of the cumulative errors in the pitch curve of non-circular
null Chibing Hu, null Honghui Yao, null Fangyong Tian   +2 more
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Application of Non-Circular Planetary Gear Mechanism in the Gear Pump

Advanced Materials Research, 2012
Gear pump is the most commonly used hydraulic component in hydraulic drive system.Volumetric efficiency of the traditional gear pump is low, big flow ripple causes large pressure fluctuations, makes pipes and valves vibration, noisy. The imbalance pressure on gear pump’s gears, shafts and bearings and the large radial load limits its pressure increased.
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