ǂThe ǂinfluence of surface coatings on the tooth tip deflection of polymer gears

Boštjan Trobentar (Author), Srečko Glodež (Author), Jože Flašker (Author), Boštjan Zafošnik (Author)

Abstract

When designing gear drives made of polymer, the tooth tip deflection is a crucial parameter in respect to the proper gear drive operation. Excessive tooth tip deflection can lead to serious disturbances of gear meshing and consequently to increased noise and wear of the teeth flanks. In such cases the tooth tip deflection can be reduced through the use of stiff surface coatings on the tooth flanks. In this paper the influence of different coating materials and thicknesses on the tooth tip deflection of polymer gears is analysed using comprehensive finite element computational analysis. The numerical results obtained are then used to define an approximate equation for the calculation of gear tooth tip deflection for the coating material used and the thickness of the surface coating layer. The results show that the tooth tip deflection decreases with large values of the coating material Young’s modulus and with the coating layer thickness.

Keywords

polymer gears;surface coatings;tooth deflection;numerical analysis;

Data

Language:	English
Year of publishing:	2016
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	Inštitut za kovinske materiale in tehnologije Ljubljana
UDC:	669.058:621.833:678.7
COBISS:	19712534
ISSN:	1580-2949
Parent publication:	Materiali in tehnologije
Views:	990
Downloads:	347
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary title:	Vpliv površinskih prevlek na poves vrha zoba polimernih zobnikov
Secondary abstract:	Pri konstruiranju zobniških dvojic s polimernimi zobniki je poves vrha zoba zobnika eden ključnih dejavnikov, ki vpliva na pravilno delovanje zobniške dvojice. Prevelik poves vrha zoba namreč vodi do resnih motenj pri ubiranju zobniške dvojice, kar povzroči večji hrup in tudi večjo obrabo zobnih bokov. V takšnih primerih lahko poves vrha zoba zobnika zmanjšamo z uporabo togih površinskih prevlek. V predloženem prispevku je predstavljena obsežna numerična analiza po metodi končnih elementov, ki zajema vpliv materiala trde prevleke in debeline prevleke na poves vrha zoba zobnika. Numerični rezultati so nato uporabljeni za določitev aproksimativne enačbe za izračun povesa vrha zoba zobnika v odvisnosti od izbranega materiala prevleke in njene debeline. Končni rezultati kažejo, da se poves vrha zoba zmanjšuje z večanjem modula elastičnosti prevleke in debeline utrjenega površinskega sloja zobnih bokov.
Secondary keywords:	polimerni zobniki;površinske prevleke;poves zoba;numerične analize;
URN:	URN:NBN:SI
Type (COBISS):	Scientific work
Pages:	str. 517-522
Volume:	ǂVol. ǂ50
Issue:	ǂšt. ǂ4
Chronology:	2016
DOI:	10.17222/mit.2015.056
ID:	9594763