2.1.3 Cutting heat and temperature,2.1.3.1 Generation and transmission of cutting heat,2.1.3.2 Cutting temperature,2.1.3.3 Influence factors on cutting temperature,2.1.3.1 Generation and transmission of cutting heat,Cutting heat comes from the conversion of cutting energy. As shown in Fig.2.35, the general cutting heat Q includes Qpthe hear from shear deformation energy, Qfthe heat from the chip-tool friction, and Qfthe heat from machined surface tool friction. The general cutting heat Q can be