An Experimental and Simulation Study on Machining Damage of T-800 CFRP Multi-edge Milling Process

With the increasing application of carbon fiber composite materials (CFRP) in aerospace and military fields, reducing the damage in the processing process and improving the processing quality has become a research hotspot for scholars at home and abroad. In order to improve the milling quality of T800 carbon fiber composites, three common tools with different numbers of teeth (PCD double-edge milling cutter, four-flute flat-bottom milling cutter and corn milling cutter) were used to mill the specimen. Through the combination of simulation and experiment, the cutting force and the machined surface quality are compared, and the influence of tool structure on CFRP milling quality is analyzed. The experimental results reveal the influence of the number of cutting edges on the cutting force and the quality of the machined surface. The results show that the feed force of the corn milling cutter with multi-edge milling is 182.7% and 34.4% higher than that of the PCD milling cutter and the four-flute milling cutter, respectively, and the cutting amount per tooth is small and the cutting process is stable, which can effectively reduce the surface damage in the milling process and ensure the surface quality.