Abstract:Aiming at the process of crystal germanium cutting, firstly, the theoretical mathematical model of the cutting temperature field was established by means of the heat source method and temperature superposition principle. Then the MATLAB software was used to calculate the temperature field of the workpiece in the shear deformation zone when the cutting speed is 1.5, 2.0, 2.5 m/s, and the feed rates are 0.02 and 0.025 mm/s , respectively. Different cutting speeds and different feeds are analyzed. Finally, the three-dimensional cutting simulation analysis is carried out by using DEFORM-3D software, and the cloud maps of the workpiece temperature field under different cutting parameters are obtained. The calculation results and simulation results show that the increase of the cutting speed and feed will lead to an increase in cutting temperature. When the tool-workpiece comes into contact, the cutting temperature, feed, and time increase linearly sharply, but the temperature will remain relatively stable when it rises to a certain value. Under the same increment, the effect of the feed on the cutting temperature is greater than that of the cutting speed. The error between simulation results and theoretical calculation results at different cutting speeds and feeds is less than 10%.