Gear Technology India
   Gear Manufacturing Technology Update       November 11, 2019

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Influence of Thermal Distortion on Spur Gear Tooth Contact

The increase of efficiency in automotive gear transmissions has been a key subject of research in the past decade; to this aim, dip-lubricated gearboxes have been designed with minimized oil levels in search of reduced churning power losses and maximum power-to-weight ratios. However, when such gears' running conditions reach the highest pitch line velocities and torques, bulk temperatures increase rapidly, resulting in reduced oil film thickness, higher surface shear stresses and an increased number of asperity contacts - all of which may lead to a premature failure of the gear pair. In this paper the effects of thermally induced geometry distortions on load distribution and transmission error have been analyzed. ... Read More

System solutions from one source

System solutions from one source

KAPP NILES is a globally operating group of companies with high-quality and economical solutions for finishing gears and profiles and is partner for companies from numerous industrial sectors in our segments mobility, automation and energy. The perfect interaction between machines, tools, and technologies enables extremely precise machining to a thousandth millimetre.

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Liebherr Examines Universal Chamfering

Liebherr Examines Universal Chamfering

The number of gears in gearboxes is growing, but at the same time the amount of space available is decreasing. Where space had to be allocated for four gears in the past, these days it is often seven gears. The gears are therefore becoming smaller and they are required to perform at a higher level, particularly at the edges, which is only possible with perfect chamfering.

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