When cutting the metal, due to the shear deformation of the work done in front of the knife, the friction behind the work are turned into heat, this heat called cutting heat. When the cutting fluid is used, the cutting heat on the tool, the workpiece and the chip is mainly removed by the cutting fluid. When the cutting fluid is not used, the cutting heat is mainly carried away by the chip, the workpiece and the tool, and the heat The heat to the tool is small, but the front and rear temperatures affect the cutting process and the wear of the tool, so it is necessary to understand the variation of the cutting temperature.
