1、error of machining principle
The main factor that produces the machining error of CNC machine tools is the error caused by the approximate machining motion or the approximate tool profile. Because there is an error in the processing principle, it is called the error of the processing principle. As long as the principle error is within the allowable range, this processing method is still feasible.
2、CNC lathegeometric error
Manufacturing tolerances, installation tolerances and wear during use directly affect the machining accuracy of the workpiece. Among them, the rotary motion of the machine spindle, the linear motion of the CNC machine tool guide rail and the error of the machine tool transmission chain.
3.Tool Manufacturing Error and Elastic Deformation
Many people have the experience that after cutting a few millimeters deep into the knife in front, they find that they are still only a few dozen or more threads away from the desired size. When they made the next CNC cut as planned, they found that they had cut more. Many, the size may be too small.