Elastic Modulus of Grinding Wheels and Its Impact on In-Process Behavior

Authors: W. König, H. Föllinger, Technical University of Aachen, Lehrstuhl für Technologie der Fertigungsverfahren (1987)

Summary

The purpose of these investigations was to ascertain the significance of the elastic modulus with respect to the in-process behavior of grinding wheels. The results obtained through extensive variation of the grindingwheel specification parameters “abrasive”, “grain size”, “grade” (hardness), and “microstructure” can - for wheels of mutually similar volumetric structure - be reduced to the following observations:

- The effects of different abrasive materials on the process itself and on the results obtained cannot be adequately forecast on the basis of the elastic modulus.

- In most cases involving electro-corundum grinding wheels, varying onespecification parameter at a time, e.g. grain size, yields good correlation between the process quality variables and the elastic modulus. To be sure, the results apply only to the extent to which the tool’s properties have been influenced by a singular measure, e.g. by modifying the effective hardness by way of grain-size variation.

- As soon as comparisons between the elastic modulus and the process quality variables are drawn without dependence on how changes in tool properties are effected, correlations are obtained only for Q,, 1,mes and V,, 1,mes.

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