Results 161 to 170 of about 247 (195)

Durability of injection moulded asymmetric involute polymer spur gears

International Journal of Powertrains, 2016
Asymmetric tooth profiles with different pressure angle at drive and coast sides are being considered to enhance the gear performance. In this work, experimental investigations were carried out to evaluate the fatigue and wear performance of injection moulded asymmetric polypropylene spur gears using the power absorption gear test rig.
A. Johnney Mertens, S. Senthilvelan
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Internal involute spur gear pairs with improved efficiency

1998
Eliminating all toothing non-geometrical parameters from the formula for the calculation of the sliding mechanical power loss in the spur gear teeth mesh, the geometrical friction loss function has been got. The minimum of this function for a gear pair with fixed module, number of teeth and centre distance corresponds to the optimal addendum ...
Medica, Vladimir, Križan, Božidar
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Lubrication Characteristics of Involute Spur Gears: A Theoretical Investigation

Journal of Fluids Engineering, 1945
Abstract In this paper the lubricating-oil wedge which separates the tooth surfaces of involute straight spur gears is analyzed mathematically. Expressions are derived for the pressure distribution, the maximum pressuro, the minimum thickness, and the load-carrying capacity of the wedge for any phase of mating.
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BEARING CONTACT ANALYSIS OF THE INVOLUTE SPUR PLANETARY GEAR TRAIN

Transactions of the Canadian Society for Mechanical Engineering, 2001
The goal of this study is to determine the dimensions and orientations of instant contact ellipses of gear surfaces in the meshing of the planetary gear train in order to recommend the proper amount of the crowning radii. The mathematical model for the surface profiles of the simple planetary gear train with the crowned planet gear is developed to ...
Jia-Lin Chen, Ching-Huan Tseng, Chung-Biau Tsay   +2 more
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Separation distance and static transmission error of involute spur gears

28th Joint Propulsion Conference and Exhibit, 1992
The effects of separation distance and deflection of gear teeth on the static transmission error of involute spur gears are investigated. In this paper, only low-contact-ratio gears with true involute profile are studied. Gear ratio and tooth addendum are varied to examine their effects on the separation distance and static transmission error.
DAVID TSE, HSIANG LIN
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3D Analysis of Involute Spur Gears

1998
The paper deals with the stress field in spur involute fillet investigated by means of finite element method. To take into account the actual three-dimensionality of the gear, three-dimensional models were used for the determination of the fillet tangential stress component and stress directed to a gaer axis.
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Load Sharing Model for Non-standard Involute Spur Gears

2012
The presence of undercut at the tooth root, non-equal addendum on pinion and wheel, non-standard tooth height or non-standard center distance may have decisive influence on the load sharing between pairs of teeth in simultaneous contact of spur gears. The curve of variation of the meshing stiffness along the path of contact, quite symmetric respect the
J. I. Pedrero, M. B. Sánchez, M. Pleguezuelos   +2 more
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Geometry and design of involute spur gears with asymmetric teeth

Mechanism and Machine Theory, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Roles of transposable elements in the regulation of mammalian transcription

Nature Reviews Molecular Cell Biology, 2022
Julius A Judd, Cédric Feschotte, Joanna Wysocka   +2 more
exaly  

Load Distribution on Spur Involute Gears with Pitch Errors

2003
Geometrically ideal gear has all teeth with identical involute profiles, which are equally spaced around the circumference. However, manufacturing errors are always present in meshing gears. Pitch errors (also called tooth spacing errors) in particular are important because of their influence on load distribution on mating teeth, and their effect on ...
Lovrin, Neven, Franulović, Marina, Križan, Božidar   +2 more
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