The first is the guide rail guide error of the machine tool. The guide rail guide difference mainly causes the parts to move in the direction sensitive to the error of the bed. Resulting in the straightness and flatness errors on the surface of the machined parts and then the rotation error of the machine tool spindle. The spindle of the machine tool has shifted from the center of the original spindle during the rotation.
The error of coaxiality and deflection caused to the cylindrical surface of the machined part is finally the error of the transmission chain of the machine tool, and the position of the machine tool will change when the movement of the part is transmitted. As a result, the cumulative error of the displacement of the part will cause a positional deviation of the holes on the surface of the processed part, 6 sets and some reel auxiliary structures.
Difference of geometric parameters
The geometric parameter error is mainly caused by man-made, and a small part is caused by the aging of mechanical processing. Part processing requires both machine tool processing and human measurement. Due to the systematic error of the measuring tool, environmental error or human error will cause geometrical errors and affect the processing accuracy.
Support deformation and force deformation. Thermal deformation is generated from the inside of the part. During the machining process, the part is subjected to uneven heat energy and then when it is cut with the tool, the thermal deformation will affect the processing of the part. The accuracy of the force deformation is the processing Due to the effect of external force, the original force-bearing state of the part is broken, resulting in uneven force and mechanical deformation of the part, which reduces the machining elongation of the part.