Effect of process parameters on the surface forming accuracy of step of hollow step shaft formed by three-roll skew rolling

Abstract

This paper adopts a three-roll skew rolling technology with rolls that can either converge or move apart to form shafts with variable cross-section dimensions. Based on the rolling pitch, the effect of rollers’ rotation speed, radial speed, axial speed of chuck on the forming accuracy of the hollow shaft surface is analyzed. Increasing the rotation speed of rollers, reducing the radial speed of rollers and the axial speed of chuck can obtain higher surface forming accuracy. The finite element simulation results verified the correctness of the conclusion.

Keywords

• alloy steel
• three-roll skew rolling
• hollow step shaft
• forming accuracy
• simulation