Naslov
Some considerations about the load capacity and efficiency of the HCR-gears

Autori
Križan, Božidar ; Lovrin, Neven

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

Izvornik
4th World Congress on Gearing and Power Transmission / Manifestations et Communications Internationales - Pariz : IET, CETIM, 1999, 329-334

Skup
4th World Cogress on Gearing and Power Transmission

Mjesto i datum
Pariz, Francuska, 16.03.1999. - 18.03.1999

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
efficiency; friction loss; high contact ratio; involute gear; load capacity

Sažetak
The sliding friction power loss is a function of surface roughness, oil viscosity, force acting on the teeth, rotational speed and gear width, but also of the toothing geometry: module mn, teeth number z1 and z2, normal pressure angle an and gears centre distance a significant e.g. addendum modification coefficients x1 and x2 . The paper explains the dependence of the sliding friction losses on high transverse contact ratio (HCR)-gear geometry i.e. on tooth addendum, pressure angle and especially the addendum modification coefficients sum (x1 + x2) and its distribution on gears in mesh. It can be seen that an improper choice of the HCR-gear geometry causes significantly lower efficiencies. As the HCR-gearing has bigger power losses than a standard one of the same module and teeth number, a proper geometrical gear-design has an emphasized importance. However, possible smaller modules of the HCR-gears due to their bigger load capacity will result in decreasing of the sliding power losses and in partial compensation of inconvenient sliding conditions. A comparative analysis concerning sliding friction losses for standard and HCR-gears which are transmitting same torque and which have the same gear strength has been made. Recommendation for the use of the HCR-gearing will be given.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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