Forschungs- & Entwicklungsinformationsdienst der Gemeinschaft - CORDIS

Geometry error detection in grinding wheels

Normally in Industry the number of dressing strokes to achieve a good grinding wheel surface and topography is not known. The machine user apply a fixed number of dressing strokes due to their experience and some additional strokes for process safety reasons because he does not have a quality in-situ measurement for detecting the minimum number of required strokes.

Several possible geometric tool errors have to be considered to classify a grinding wheel as free of geometric errors. Some of them were investigated in Task 2.2:

- Edge wear: A very sensitive system of AE signal evaluation was built up based on curve fitting and optimisation algorithms to get a reliable detection of the dressing stroke time. It cannot easily be disturbed by the noisy AE signal.

- Notch detection: Normally, AE mapping technology only considers the actual surface of the grinding wheel, applying a colour map to the AE level. Mapping the depth of the grinding wheel regarding all the previous dressing strokes, offer a prognosis of the remaining depth of damage.

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