Effect of deforming tool parameters on roughness of hardened surfaces during orbital ironing

The effect of the deforming tool parameters on the roughness of hardened surfaces during orbital burnishing is considered. As result of experimental studies, it is revealed that after orbital burnishing, new surface is formed with significantly lower height of microscopes compared to the original microprofile, which has positive effect on improving of the shape accuracy and quality of hardened parts. It is found that the most significant effect on the roughness parameters during orbital burnishing is exerted by the orbital rotation radius, less significant — by the radius and working tool tilt angle. Increase in the working tool tilt angle the orbital rotation radius and decrease in the working tool radius leads to increase in roughness of surface.