New Challenges and Countermeasures for CNC Machining of Composite Materials
Carbon Fiber Reinforced Composites (CFRP) and Glass Fiber Composites (GFRP) are widely used in aerospace, automotive, and sporting goods, but CNC machining faces unique challenges such as burrs, delamination, tearing, and tool wear. Industry countermeasures in 2026 focus on three areas: dedicated cutting tools, low-temperature assistance, and optimized cutting parameters. Diamond-coated tools (PCD or CVD diamond) can increase tool life by more than 10 times, but at a higher cost. Another effective strategy is to use "pecking" and "helical milling" processes to reduce delamination. For thin-walled composite parts, the use of cryogenic cooling (liquid nitrogen) can make the resin matrix brittle, resulting in cleaner cutting edges. Practical applications have shown that the use of sharp diamond tools with high rotational speed (10,000-20,000 rpm) and low feed (0.01-0 mm/tooth) can control the delamination factor to within 1.05 (ideal value is 1.0). In addition, an online visual inspection system can identify edge burrs and delamination in real time, enabling instant compensation. Service providers with composite CNC capabilities will be in high demand in aerospace and wind turbine blades in 2026.
We are professional CNC production experts, please send us the drawings, and our company will quote you within 12 hours
