ROTEC · Measurement applications
Single-flank testing
Measure rolling deviation under quasi-static conditions and assess the geometric behaviour of a gear pair.
Measurement task and objective
Single-flank testing measures rolling deviation in a gear pair. The source describes testing a bevel gear to assess geometric quality and identify deviations relevant to gearbox noise.
The method provides measurement evidence for assessing the quality of the gear pair; it is not a universal pass/fail guarantee for every gearbox.
Test principle
Measurement takes place under quasi-static conditions to reduce dynamic effects. High-resolution encoders are fitted to the pinion and ring-gear sides.
The example described in the source uses speeds up to 60 rpm and loads up to 20 Nm. These are example test conditions, not general product limits.
The gears roll together over a cycle selected for their tooth counts. Differences from the ideal transmission ratio reveal geometric irregularities.
Data evaluation
The measured values are analysed in the time and spectral domains and averaged over one revolution.
Time-domain evaluation separates long- and short-wavelength components of the deviation, supporting the separate assessment of macro- and micro-geometric influences in the gear pair.
Questions and answers
What does single-flank test evaluation show?
Time-domain and spectral evaluation, including averaging over a revolution, help distinguish long- and short-wavelength components of rolling deviation and assess geometric influences in the gear pair.
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