Abstract
Tool-work thermocouple method is powerful to measure cutting temperature in the region of tool-chip or tool-workpiece interface. However, it is difficult to use for milling process due to the tool is rotating and thermal electromotive force (EMF) generates in the rubbing area. In this study, carbon brush was designed to use as a sliding contact and generating EMF in rubbing area was investigated in order to compensate temperature at the cutting area. The obtained results show that the generating EMF was constant in the range of 0.188±0.035 mV (23.08±4.39ºC) when spindle speed and rubbing time were changed. In addition, the signal quality of cutting temperature in milling process has been improved when compressed air was used to blow at the rubbing area between sliding contact and tool holder.
