The Build Of The Dynamic Milling Force Model Based On Cutting Graphics

Dynamic milling force is an important physical phenomenon in the study of cutting pro- cess, which exerts directly impact on surface quality, tool wear, work-piece deformation and cutting chatter, etc. Establishing an accurate and reliable dynamic milling force model is of great significance for improving the machining accuracy, tool selection design and optimizing processing parameters and physical simulation and the study for cutting mechanism, etc.Firstly, the establishment of the geometric model of cutting graphics based on the study for the tool tip trajectory and cutting edge trajectory, which laid the foundation for building the dynamic milling force model based on cutting graphics in the later.Secondly, we studied the cutting critical condition of one single tool edge and the change rule of milling force for a cylindrical end mill, which provided a theoretical basis for the experimental design. At the same time, we build a concise dynamic milling force model based on the cutting graphics, and studied the determination methods of milling force coefficients and angle integration limits.Finally, we designed and finished the orthogonal test, demonstration test and simulation test for milling force, and build the milling force coefficient model by data processing, and then we obtained the dynamic milling force model. Both the numerical simulation and measured cutting force and the consistent comparison curves are all verify that the prediction model of milling force is accurate.