The technological effect of precision machining:

① The geometric shape and mutual position accuracy of the parts can reach the level of micron or arc second;

② The limit or feature size tolerance of the parts is less than micron;

(3) The surface micro-roughness (average surface roughness height difference) is less than 0.1 micron;

(4) Cross-fitting can meet the requirements of combining ability;

⑤ Some parts can also meet the precise mechanical or other physical characteristics, such as the torsion stiffness of float gyroscope torsion bar, stiffness coefficient of flexible components, etc.