To achieve a fundamental understanding of the physical mechanisms and the heat generation in the contact zone during grinding, a large number of experimental and numerical investigations have been carried out to analyse the interaction of single grain and workpiece. Existing numerical models of the interaction between grain and workpiece do not represent the reality and especially the influence of the three-dimensional grain geometry on the temperatures during single grain scratching with sufficient accuracy. An experimental validation of the simulated temperatures has not been carried out yet as there is no appropriate method to measure them in experimental investigations. In this study, a three-dimensional FE-model of the interaction between CBN-grain and workpiece (100Cr6) in the grinding process is presented. The model predicts the chip temperatures for real grain geometries to investigate the interactions between grain and workpiece. The experiments to validate the model were carried out using a ratio pyrometer.

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Der konstruktive Aufbau von Spitzenlosschleifmaschinen erschwert die Implementierung von Sensorik zur Prozessüberwachung. Daher wird ein Sensorsystem zur Schwingungsmessung beim Spitzenlosschleifen vorgestellt, das auch zur Nachrüstung von Bestandsmaschinen geeignet ist. Die erfassten Daten während spitzenlosen Einstechschleifversuchen korrelierten in guter Näherung mit schleifscheibenverschleißbedingten Änderungen der Werkstückeigenschaften.   The design of centerless grinding machines makes it difficult to apply suitable sensors for process monitoring. This paper presents a sensor system for vibration monitoring during centerless grinding, which can also be used for retrofitting existing machines. The data recorded during centerless plunge grinding correlated in a good aproximation with changes in the workpiece properties related to grinding wheel wear.