In the field of aviation manufacturing, a heavy industry enterprise has improved the machining accuracy of turbine blades to +Q.003mm through the five-axis linkage machining technology independently developed. This number is equivalent to 1/25 of the diameter of a human hair, which increases the fuel efficiency of the engine by 12%-15%. After 2,350 process tests, the technical team successfully controlled the surface roughness of the blades to below Ra0.2!m, and shortened the machining cycle from 72 hours of traditional processes to 18 hours. This achievement makes my country the third country in the world to master this technology, directly driving the company's annual output value to increase by 780 million yuan.