Influence of the Toroidal Tool Kinematics on Residual Stress-Strain State of the Surface Layer of Machine Parts

Abstract

The article considers an approach to increasing compressive residual stresses during surface plastic deforming. The technical idea is based on the consideration of the kinematics of the working tool. A new hardening process based on the circular oscillation of the working tool is proposed. Finite element modeling which allows determining the residual stresses arising during hardening of machine parts was used to prove the effectiveness of the new kinematics of the tool. It has been found that in terms of increasing residual stresses, the oscillating movement of the working roller is much more efficient than the static one.