Influence of Different Zoning on Part Thickness in the Multi-Stage Incremental Forming Based on the Extrusion from the Forward and Reverse Side of the Sheet

Abstract

In the multi-stage incremental forming of straight-wall parts based on the extrusion from the forward and reverse side of the sheet, different forming area zoning will have different effects on the part thickness. The larger the area of the sheet metal participating in forming is, the better the thickness distribution is. However, the forming area zoning can be adjusted by using the inclination angle α and the height H of the auxiliary zoning surface. Research results show that the forming area of the sheet metal participating the forming will increase and the thickness of the formed part will also increase with the inclination angle α decreases and with the height H increases.