Investigation of the effect of contact pattern design on the mechanical and thermal behaviors of plastic‐steel helical gear drives

The utilization of tooth contact pattern in a gear meshing model for estimation of sliding loss in a spur and helical gear pair is presented in this paper. The photo of tooth contact pattern taken after the gear operation is used as the database to generate the simplified tooth contact pattern. Then the simplified contact pattern is used along with the gear meshing model to estimate the sliding loss of a gear pair. Experiments are done to verify the results. The estimated results from the presented method agree well with the experimental results. The presented method is able to estimate the effect of the helix angle on the sliding loss correctly whereas the estimation without using the data of tooth contact pattern cannot.

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Examination of the contact pattern of rolling surfaces

Design of Machines and Structures ◽

10.32972/dms.2019.013 ◽

2019 ◽

Vol 9 (2) ◽

pp. 38-43

Author(s):

Ferenc Sarka

Keyword(s):

Operating Conditions ◽

Contact Pattern ◽

Rolling Bearings ◽

Contact Patterns ◽

Potential Applications ◽

Gear Drives ◽

Shape And Size

This article provides a brief summary of the potential applications of contact pattern examinations. The examination of contact pattern is a frequently used test for gear drives, rolling bearings and checking support rollers. It is used on gear drives and support rollers to test operating conditions, whereas in the case of rolling bearings the cause of the failure has already been identified. The chapters mention the types of contact patterns, the shape and size of contact patterns. This article is an introduction to a multi-part article series that presents the computerbased capabilities of contact pattern examination.

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Effect of Face Contact Ratio on Load Sharing Based Fillet Stress in Asymmetric Helical Gear Drives

Universal Journal of Mechanical Engineering ◽

10.13189/ujme.2014.020403 ◽

2014 ◽

Vol 2 (4) ◽

pp. 137-141

Author(s):

R.Prabhu Sekar ◽

G. Muthuveerappan

Keyword(s):

Load Sharing ◽

Helical Gear ◽

Contact Ratio ◽

Gear Drives

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Geometric contact pattern estimation for gear drives

Computer Methods in Applied Mechanics and Engineering ◽

10.1016/j.cma.2009.01.009 ◽

2009 ◽

Vol 198 (17-20) ◽

pp. 1563-1571 ◽

Cited By ~ 16

Author(s):

A. Bracci ◽

M. Gabiccini ◽

A. Artoni ◽

M. Guiggiani

Keyword(s):

Contact Pattern ◽

Gear Drives

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Effects of helix deviation on load distributions and bending stresses of continuous engaged helical gear drives

Advances in Mechanical Engineering ◽

10.1177/1687814015588660 ◽

2015 ◽

Vol 7 (6) ◽

pp. 168781401558866 ◽

Cited By ~ 4

Author(s):

Tao Luo ◽

Xunpeng Qin ◽

Jinjing Huang ◽

Wei Guo

Keyword(s):

Helical Gear ◽

Load Distributions ◽

Bending Stresses ◽

Gear Drives

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The Mesh Property of the Steel Involute Cylindrical Worm with a Plastic Involute Helical Gear

Journal of Mechanics ◽

10.1017/jmech.2013.70 ◽

2013 ◽

Vol 30 (2) ◽

pp. 185-192 ◽

Cited By ~ 1

Author(s):

Z. Y. Liu ◽

C. C. Huang ◽

Y. H. Hao ◽

C. C. Lin

Keyword(s):

Finite Element ◽

Helical Gear ◽

Worm Gear ◽

Gear Pair ◽

Conventional Steel ◽

Element Simulation ◽

Discrete Dynamic Model ◽

Plastic Gears ◽

Plastic Steel ◽

Geometry And Kinematics

ABSTRACTWith the increasing use of plastic gears in substitution of conventional steel ones, a plastic involute helical gear has been introduced to engage with a steel involute worm thus forming a novel plastic-steel worm-gear pair. The geometry and kinematics of this kind of worm-gear pair has been established first to derive its meshing properties which have been further verified by the finite element simulation. And it turns out that the contact area of this worm-gear pair is a point or an ellipse instead of a line. Further, a discrete dynamic model has been applied to investigate the dynamic transmission of motion and power of this worm-gear pair through the dynamic mesh force and the driven plastic involute helical gear. And the effects of angular and distance assembling errors have also been included.

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