Effects of Distance between Side Rollers on Deformation Behavior in Three-Roll Bending of Structural Channels Using Grooved Driving Roller

Abstract

Roll bending is a useful technology for manufacturing a wide variety of products in small quantities. However, the roll bending of structural channels, which have a complicated cross-sectional shape, causes irregular deformation. On the other hand, there are fewer reports on the bending of structural channels than those on the roll bending of sheet metals. The purpose of this study is to clarify the fundamental forming property in the roll bending of structural channels. In the present paper, we report the results of a finite element analysis of the effects of the processing conditions, that is, the driving-roller groove shape and the distance between the side rollers, on the deformation behavior in the three-roll bending of structural channels.