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Development of Cutting Tools with Built-In Thin Film Thermocouples

Cutting temperature and cutting force are important basic physical parameters, which should be known to achieve high efficiency and high quality machining. However, it is difficult to measure the cutting temperature in machine shops. A new cutting tool with temperature sensors fabricated by photolithography was devised to measure the cutting temperature directly during machining. In this study, tools with a thin film thermocouple (TFT) fabricated on a ceramics tool insert were developed. Thermometry cutting experiments with the developed tools were carried out at different cutting speeds and feed rates. The performance and capability of the tools with a built-in TFT were discussed.