Analysis Of Cutting Force And Temperature For High Speed Milling

In the process of metal cutting, the cutting force and cutting temperature are the main parameters that respond to the process. The study of cutting force and cutting temperature can improve the efficiency and quality of the processing and promote the economy development of the country. In particular, many researcher had done a lot of work of the forecast of the cutting force and temperature .Because there are many real factors that affect the cutting force and temperature and the process is complicated, it is difficult to develop the theory model. The last models are usually developed on the situation of low speed. With the development of the high speed cutting and many countries paying more attention to it, the cutting force and temperature of high speed cutting became the main objects which are researched by many countries. For face milling is a basic manner of metal cutting, the paper mainly study the cutting force and temperature of high speed face milling.We chose the face milling cutter. And the factors that should be processed in high speed cutting are introduced into face milling by mean of analytic method and the mechanical analysis of high speed cutting, we developed the face milling cutting force model that suits to high speed cutting. Because the model had taken into account the factors that don't be processed in low speed cutting, it can provide a theory basis for calculating cutting force of high speed face milling.The heat transfer model of cutting temperature field was built. Theoretic study about shear plane heat source and tool—chip interface friction heat source was carried out with the method of heat source. The temperature field distribution of chip and workpiece due to shear plane heat source was determined by this method. The temperature field distribution of chip and tool due to tool-chip interface friction heat source was also obtained. Then temperature field distribution of chip and tool due to combined both sources was derived. Then we introduced the foregoing temperature field distribution into face milling and built the cutting temperature field model of face milling. Because the method of heat source can educe the simplest form of solution and the computed result is close to the actual result, the model can provide a theory basis for calculating cutting temperature of high speed face milling.On the basis of metal cutting theory and elastic-plastic mechanics, we studied the stress, strain, the yield norm and the intensification norm when the material comes into plastic state, the stress-strain relation in cutting zone. Those prepared for the finite element analysis fully.The process of metal cutting was simulated by means of the large finite element software ANSYS. The results of stress ,strain and the friction of rake face were analyzed, and the results was compared with the regularity of process of metal cutting .It proved that the simulation results accorded with the regularity of process of metal cutting, the results are believable.