Аннотация:
On the basis of the accuracy of the theory proposed
method of calculating the static and dynamic errors in cross-sectional shape of openings in fine
boring smooth and stepped holes. We consider particular cross-sectional shape error caused by such
factors: the displacement axis of the hole in the workpiece relative to the spindle axis of the oval
hole in the workpiece, the unevenness of the radial compliance in the tool spindle to the angle of
rotation. The results of calculations and experiments total error depending on the change of the
lengths of the steps of the boring bar, the diameter and cutting process parameters. It is found that
the feature of change of total errors deviation from circularity of the cross section at multi-cutting
boring is the alternation of high and low values in accordance with the alternation amplitude of
forced oscillations.
