Grinding is an important manufacturing technique widely used in industry. It is characterized by a multitude of cutting edges which are simultaneously in contact with the workpiece and for this reason they cause large amounts of heat due to friction. Coolants to avoid thermal influences on the workpiece surface layer are obligatory. Obviously these conditions can be characterized as harsh environment for every process monitoring equipment. Probably this is one of the reasons that grinding processes, despite their great significance, still lack in sensoring, monitoring and assessment qualities. However, since grinding is characterized by rapidly changing conditions, the uncertainty of correlations between set-up process parameters and machining result influences the efficiency of the production run. Only by full knowledge of the working conditions, the great potential of the grinding operation to increase the workpiece quality, tool life and process efficiency can be exploited. The main obstacle in realizing full in-process control of grinding in industry today is principally the lack of sufficient and reliable information obtained directly from the grinding zone. This is clearly caused by the difficult accessibility for conventional measuring techniques. A new approach to get information about temperatures of a grinding process, outlined in this paper, is the grinding wheel based temperature measurement, followed by telemetric data transfer.
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