Network optimization information:

The main reasons for the radial rotation error of the spindle are: the coaxiality error of several sections of the Journal of the spindle, the various errors of the bearing itself, the coaxiality error between the bearings of the turn milling compound CNC machine tool, the spindle winding, etc. However, the degree of its influence on the radial rotation accuracy of the spindle varies with different processing methods.

If the sliding bearing is used as the spindle structure on the lathe, the action direction of the cutting force F can be considered constant when turning the outer circle. At this time, under the action of the cutting force F, the main journal of different parts contacts with a fixed part of the bearing inner diameter. At this time, the roundness error of the main journal recovered by the two hand CNC machine tool has a great impact on the radial rotation accuracy of the main shaft, The roundness error of the bearing inner diameter has little influence on the radial rotation accuracy of the spindle, while the main journal has little influence on the contact between the action direction of the cutting force F and the rotation direction of the bearing inner diameter.