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Epicyclic Gear Transmission Error - The Importance of Controlling Tolerances
Technical Paper
2007-01-2241
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It is well known that the spacing of planets in an epicyclic gear set is an important “macro” design feature that is used to balance planet load sharing, increase gear life and reduce gear whine.
What is less understood is how the manufacturing tolerance of the position of the planet pins within the carrier, a “micro” phenomenon, affects the gear whine.
This paper describes an analysis technique that can predict system level behaviour and shows that the inherent variability in the manufacturing processes has a very significant effect on the TE and thus generated gear whine.
The manufacturing variability causes radial, circumferential and tilt displacements of planet gears - these phenomenon are all investigated.
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Smith, A., Pears, J., Platten, M., Palmer, D. et al., "Epicyclic Gear Transmission Error - The Importance of Controlling Tolerances," SAE Technical Paper 2007-01-2241, 2007, https://doi.org/10.4271/2007-01-2241.Also In
SAE 2007 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V116-6; Published: 2008-08-15
Number: V116-6; Published: 2008-08-15
References
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- Pears J. et al. ‘Investigation of methods to predict parallel and epicyclic gear transmission error’ SAE, 05P-218
- Palmer D. et al. ‘Design considerations of planetary system for transmission error prediction’ International Conference on Mechanical Transmission Chongqing, China 2006
- RomaxDesigner R12.5.0 Romax Technology Limited