Mahr MWF GmbH has developed and built a measuring machine for double-flank gear roll testing to meet the individual requirements of a customer. This machine tests the form feature concentricity deviation Fr on the internal toothing of gears. The noise development of the subsequent gearbox can then be predicted based on the measurement results. This is an important aspect, particularly in electromobility.

In modern automotive vehicles, gear noise becomes more and more of an issue. The main reason is the reduced masking noise of the engine, which vanishes completely in the case of an electric driveline. Improved gear quality unfortunately does not correlate with a better noise performance in any case. High gear quality makes sure that the gear flanks are inside tight tolerances and that all teeth are nearly identical. Even if the running behavior of such gear sets shows a very low sound pressure level, the noise perception for human ears may be annoying.

In this latest edition, issue 9, of the GEARS inline Customer Magazine, Klingelnberg once again presents all sorts of trends and innovations from the world of gears. This time, the machine manufacturer focuses primarily on the hot topic of noise behavior and analysis.