机械零件(位置公差)平行度的测量,各生产单位根据零件的结构形状采用不同的方法进行,有的依靠工装的精度来保证,根本不进行测量。在机械设备修复加工中更是很少进行测量。这样常常造成零件不合格,导致不能进行装配,如勉强装配,会影响机械 Mechanical parts (position tolerance) parallelism measurement, the production unit according to the structure of the parts using different methods, and some depend on the accuracy of tooling to ensure that no measurement at all. In the mechanical equipment repair processing is rarely measured. This often results in unqualified parts, resulting in the assembly can not be carried out, such as reluctantly assembly will affect the mechanical