Abstract
This paper describes an experimental apparatus which can measure positions of abrasive grains and sizes of their wear flat even if under wet condition with practical grinding wheel peripheral speed (30m/s). The apparatus mainly consists of a laser unit, lens, silicone-PIN-photodiode, etc. The output signal of the apparatus is investigated experimentally. Main contents of experiments are the investigations for the effect of air and coolant on the output signal, the variations of the output signal under different dressing conditions, the comparison of the print of wheel face and the output signal, and that of normal grinding force and areas of the peak of the output signal. Main results obtained from the experiments are as follows: (1)The position of the peak of the output signal is in good agreement with that of the wear flat of the cutting edge. (2)The area of the peak corresponds to that of the wear flat of the cutting edge.
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