Parametric analysis of geometric accuracy in combined hole mandrelling techniques

Using the example of steel 12KhN3A, the influence of the combined method of influencing the processed material, the nature and parameters of the microgeometry of the impacting surfaces of the elements of the processing tool for advanced plastic deformation on the formation of geometric accuracy parameters in the form of ovals of deviation of the longitudinal section profile in the methods of combined (deforming-cutting) hole mandrel is comparatively studied.