The wear and thermal mechanical contact behaviour of machine cut polymer gears

Mao, Ken; Langlois, P.; Hu, Zedong; Alharbi, Khalid Abdulkhaliq M.; Xu, Xiangyang; Milson, M.; Li, W.; Hooke, C. J.; Chetwynd, D. G.

doi:10.1016/j.wear.2015.01.084

Cited by 92 publications

(76 citation statements)

References 14 publications

(20 reference statements)

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“…Wear rates for Acetal gear produced by machine cut and injection moulding are independent to the manufacturing process as reported by K. Mao et al [10]. The gears undergo testing at load 6 -9 Nm at 100 rpm and undergo wear in three phases.…”

Section: Tooth Thickness Reductionmentioning

confidence: 55%

“…With the help of SEM, they were able to detect large pits or scoops of material were removed at the dedendum, smooth surface due to wear at addendum caused by sliding and rolling motion of gears and the formation of a ridge at pitch line caused by rolling. An SEM examination around the gear tooth pitch and root areas were conducted by K. Mao et al [10] to determine whether wear occurs at that region. From the gear mesh theory, there is nearly zero friction around the pitch point, however the images from SEM showed otherwise.…”

Section: Microstructure Surface Condition Monitoringmentioning

confidence: 99%

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A review on failure characteristics of polymer gear

et al. 2016

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Abstract.Polymer are now widely used as substitute material for steel gear in low load devices. Its failure differs from gears made of steel, thus it is important to categorize the failures shown by polymer gears. Several previous studies noted that wear detection, microstructure surface condition monitoring, weight loss and temperature detection can be used in detecting failure of polymer gear. This article reviews the failure detection method mentioned above. Other researcher works were studied and their findings were extracted in order to identify the methods they used. The most common method used was wear detection and it was supplemented by other methods such as microstructure surface condition monitoring. Failures shown by polymer can be concluded to be tooth breakage, tooth deformation, material removal and surface fatigue.

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Section: Tooth Thickness Reductionmentioning

confidence: 55%

Section: Microstructure Surface Condition Monitoringmentioning

confidence: 99%

A review on failure characteristics of polymer gear

et al. 2016

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“…The assembly photos of gear test rig and its wear mechanism are presented in detail in [39]. To continuously measure and record the wear in real-time, an exclusive datalogging system was designed and made, consisting of a displacement measurement device and a datalogging software.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…A novel design of polymer gear test rig has been developed to investigate the effects of gear misalignment, however detailed research was not conducted [39]. This paper describes the operation of the test rig to continuously measure the wear behaviour of the misaligned polymer gear pairs.…”

Section: Introductionmentioning

confidence: 99%

An investigation of misalignment effects on the performance of acetal gears

Mao

2017

Tribology International

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This paper concentrates on the effects of misalignment on meshing behaviour of acetal gears as hardly any misalignment investigations on polymer gears in the existing literatures. The experimental results show that the wear of acetal gears is insensitive to radial and axial misalignments but sensitive to yaw and pitch misalignments which degrade the conjugate contact action. Yaw misalignment leads to 'scoop' wear marks near tooth pitch points. Pitch misalignment causes 'superimposed palisade' wear marks and micro cracks near tooth roots. Compared with metal gears, the effects of small pitch angle on acetal gears are insignificant which may be linked closely to polymer's low elastic modulus. Strikingly different wear striations and various debris morphologies are observed by using scanning electronic and optical microscope (SEM, OM) and misalignment effects can be noted.

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“…Jest to szczególnie widoczne w przypadku tworzyw sztucznych, z których coraz częściej wykonywane są części dotychczas produkowane wyłącznie ze stopów metali. O ile we wcześniejszych latach wybrane tworzywa sztuczne były wykorzystywane na lekko obciążone części maszyn [1], to ostatnio z powodzeniem są one stosowane również na bardziej odpowiedzialne podzespoły [2,3] oraz powłoki ochronne pracujące w trudnych warunkach [4]. Świadczy o tym chociażby coraz szersze zastosowanie tworzyw sztucznych w branży samochodowej i lotnictwie [5,6].…”

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The use of modern plastics for the construction of high speed fluid-flow machinery

2018

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Discussed are issues related to the selection of plastics for manufacturing chosen components of high-speed fluid-flow machinery. In addition to discussing the criteria used for material selection, an exemplary strength analysis of a rotor disk made of plastic was presented. The work carried out was aimed at replacing commonly used metallic alloys with modern plastics, which in turn may shorten production time and reduce costs.

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The wear and thermal mechanical contact behaviour of machine cut polymer gears

Cited by 92 publications

References 14 publications

A review on failure characteristics of polymer gear

A review on failure characteristics of polymer gear

An investigation of misalignment effects on the performance of acetal gears

The use of modern plastics for the construction of high speed fluid-flow machinery

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