Abstract:

Combining the characteristics of semiartificial thermocouple method and artificial thermocouple method, a new method of measuring cutting temperature is presented and named dynamic artificial thermocouple method. This method has the advantages of artificial thermocouple method without secondary calibration and cutting temperature of insulator can be measured, and it has the advantaget of semiartificial thermocouple method that cutting temperature in cutting zone can be measured directly. By comparing temperatures in cutting zone during the process of milling aluminum panels measured by the new method and semiartificial thermocouple method separately under same machining conditions, the measure accuracy of the new method is verified. The experiment demonstrates that the temperature measurements by using dynamic artificial thermocouple method are closed to those results by using semiartificial thermocouple method. For thermocouple potential, the mean absolute percentage error is less than 2.5% and the standard deviation is less than 0.9mV. For temperature values, the mean absolute percentage error is less than 3% and the standard deviation is less than 14℃. Furthermore, temperature variation in the cutting zone of epoxy resin is measured by using dynamic artificial thermocouple method and it is proved that this method can be used to measure cutting temperature in the cutting zone of insulator effectively.

Key words: dynamic artificial thermocouple method, cutting temperature measurement, comparison experiment