Identification of Instantaneous Cutting Force Coefficients for Helical Milling of Carbon Fiber Composite Materials

The special tool orbits around the axis of the hole while rotating with its own axis and feeds in the axial direction in the helical milling process. Based on the cutting mechanism of the helical milling process, considering the effect of the side edges and bottom edges on the major cutting during the feed process and the anisotropic characteristics of the composite material, a cutting force analytical model was established in the helical milling of carbon fiber reinforced plastics (CFRP). According to the composite material helical milling test data under the full factor condition, the data fitting method was used to identify the bottom edge cutting force coefficient, and the instantaneous cutting force method was used to identify the side edge cutting force coefficient. The results showed that the simulated cutting force can better fit the experimental value. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.