Analyse der mechanischen Belastungsverteilung in der Kontaktzone beim Längs-Umfangs-Planschleifen

(Analysis of the mechanical load distribution in the contact zone during surface grinding)

Noyen, M.

This thesis deals with the analysis of the mechanical load distribution in the contact zone between the workpiece and the grinding wheel during surface grinding using conventional abrasives. A newly developed experimental device allows studying the distribution of the mechanical load along the contact length in the direction of feed motion and along the contact width across the direction of feed motion. The load is determined by the specific normal and tangential forces as well as the compressive stress and shear stress.

Furthermore, the effective contact length and, for the evaluation of produced surface quality, the roughness average and the mean roughness depth are analysed. The investigated influencing factors comprise depth of cut, feed and cutting speed, grinding strategy (up and down grinding) and specifications of the grinding wheel. The research activities reveal that the determined actual compressive and shear stresses significantly differ from the often made assumption of a constant mechanical load distribution in the contact zone between workpiece and grinding wheel. Especially, the specifications of the grinding wheel have a high influence on the resulting mechanical load. The gained results provide a substantiated description of the mechanical load in the contact zone.

The stated connection between mechanical and thermal loads offers the possibility to calculate the appropriate thermal load distribution by means of the determined mechanical load. The developed load profiles can be applied to the modelling and simulation of grinding processes.

Published as

Dissertation Technische Universität Dortmund, Vulkan Verlag, Essen, 2008, ISBN 978-3-8027-8744-7