Sub-Fiber Scale Precision Dicing of Aramid Fiber-Reinforced Plastic Composites

Aramid fiber-reinforced plastic (AFRP) composites are widely used in aerospace, rail transit, marine and military industries, due to their high specific strength, impact resistance, fatigue resistance excellent designable properties. In order meet different application requirements, cutting processes need be carried out, such as window opening, edge slit cutting. However, the characteristics of tensile strength toughness, low interlaminar non-uniformity anisotropy make AFRP a difficult-to-machine material. They prone produce rough surfaces damages including burr, wire drawing, delamination, resin burn, material flanging, etc. To solve this problem, ultra-thin diamond dicing blade was for high-speed sub-fiber scale research. The influence process parameters on force, temperature, maximum spindle current, tool wear surface quality were investigated by establishing force model, L16(45) orthogonal experiment, single factor range analysis variance analysis. theoretical experimental results show that with can obtain smooth without common damages. When speed is 91.11 m/s (spindle n = 30,000 r/min), depth 0.2 mm feed 5 mm/s, roughness Ra 32 nm, which realize precision composites.