An economical measurement strategy for detecting tooth flank waviness

Wednesday, 11 September, 2024
10:00 10:30

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Image: Hamburg University of Applied Sciences

Online seminar: Research project FVA 733 III

Waviness on tooth flank surfaces can cause unwanted gear noise. The amount of noise is influenced by the amplitude, order, and phase position of the waviness, among others. Tactile measurement of the entire tooth in both the profile and tooth trace cross-sections can be used to reliably record, analyze, and evaluate the periodic patterns. However, this is a very time consuming process, especially for components with a high number of teeth, and is therefore usually only performed in exceptional cases. In production, only four teeth are usually measured, evenly distributed around the circumference. This is sufficient to assess standard parameters and determine modification values, but is not adequate for an in-depth analysis of the waviness with reliable results.

This online seminar explains why the results differ between a full-tooth measurement and a reduced measurement and why even distribution of the teeth to be measured over the circumference often leads to a distortion of the results of the waviness analysis. A measurement strategy was developed in FVA research project 733 III which enables significantly improved waviness analysis during production with little additional measurement effort and thus comes much closer to the accuracy of a full tooth measurement. This online seminar presents this measurement strategy with a focus on simple applicability in practice using detailed examples.