精密大连机械加工的工艺成效是：

①零件的几何状态和相互地位精度达到微米或角秒级；

②零件的界限或特点尺寸公差在微米以下;

③零件表表微观不平度(表表不平度均匀高度差)幼于0.1 微米;

④互配件能满足配合力的要求；

⑤部门零件还能满足精确的力学或其他物理个性要求，如浮子陀螺仪扭杆的旋转刚度、挠性元件的刚度系数等。

The process effect of precision machining in Dalian is:

① The geometric shape and mutual position accuracy of the parts reach the micrometer or arcsecond level;

② The boundary or characteristic dimension tolerance of the parts is below micrometers;

③ The micro roughness of the part surface (average height difference of surface roughness) is less than 0.1 micrometers;

④ Mutual accessories can meet the requirements of mating force;

⑤ Some parts can also meet precise mechanical or other physical property requirements, such as the torsional stiffness of the float gyroscope torsion bar and the stiffness coefficient of the flexible element.