Naslov
Some Considerations on the Geometry of High Transverse Contact Ratio Internal Involute Gears

Autori
Vrcan, Željko ; Lovrin, Neven ; Križan, Božidar

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
IN‐TECH 2011 Proceedings of International Conference on Innovative Technologies / Kudláček, Jan ; Car, Zlatan ; Pepelnjak, Tomaž ; Pakosta, Michal - Bratislava : Kudláček, Jan, 2011, 579-582

ISBN
9788090450264

Skup
International Conference on Innovative Technologies IN‐TECH 2011

Mjesto i datum
Bratislava, Slovačka, 01.09.2011. - 02.09.2011

Vrsta sudjelovanja
Ostalo

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
involute gear; internal gear; high contact ratio; load capacity; load distribution

Sažetak
High transverse contact ratio (HCR) gears are involute gears with a transverse contact ratio εα higher than two. HCR involute gears present certain advantages when compared to conventional gears, such as increased load capacity, more uniform torque transmission and noise reduction, due to tooth pairs in double or triple simultaneous contact, instead of a single or double contact. The increase in load capacity results in reduced gear size and extended gear life. These gears also have some drawbacks, such as reduced tooth tip thickness and worse sliding conditions between the teeth flanks, as well as high manufacturing accuracy requirements, resulting in increased production costs. The benefits of the application of HCR gears outweigh the drawbacks of this type of gears, so they are being increasingly applied to passenger cars, as well as to other road vehicles, aircrafts and ships. As the contact ratio of these gears varies 2 < εα < 3 instead of the 1 < εα < 2 found in standard gears, the total force acting on the tooth flank will be reduced to 33…50% from 50…100% found in standard gears. In order to correctly determine this load distribution, the gear geometry must be researched, notably the influence of the normal pressure angle αn and gear tooth height h on the transverse contact ratio εα.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA