Evaluation of the Tool-Face Temperature in Cutting with Coolant

Abstract

The important role that coolants play in metal cutting is to reduce the tool-face temperature and increase the tool life. The procedure in computing of tool-face temperature under cooling is guided by equating the mean temperature along tool-chip interface from chip side and that from tool side. As reported in the previous papers, the former is obtained from the analytical study that is the application of the difference method for the flow of heat in chip cooling, and the latter is lead from the electrical study treating the cooled tool as a electrolytic tank. The relative importance of several variables, especially the cooling power and supplying device of coolant, influencing tool-face temperature is discussed. This shows that, even if new coolant or supplying method may be contrived, so far as heat transfer coefficients are not widely different from those of the present, they will not be able to meet our requirement to reduce tool-face temperature. But, it is effective means to cool the work-piece enough and strongly and to lower the temperature of coolant itself.