2016-Roll Bending Process and Roll Designs of Roll Formed Sheet Panel

2016-Roll Bending Process and Roll Designs of Roll Formed Sheet Panel

J. J. Sheu, C. H. Yu and C. C. Cheng (2016) Roll Bending Process and Roll Designs of Roll Formed Sheet Panel, Advances in Materials and Processing Technologies 2016 (AMPT 2016), Kuala Lumpur, Malaysia .

____________________________________________________________

Abstract.

The curved sheet metal panels with roll-formed section are usually applied to the vehicle and the building industries. This study aims to development the process and the tool designs of roll bending process for the roll formed sheet metal. A self-luck panel with matched ribs on both end of the section profile was adopted to demonstrate the methods of the roll flower design and the roll forming process simulation. A roll bending tool was designed with a 3D CAD system and made to do the roll bending experiments. The parameters of the roll-formed section geometry and the different materials were studied for the roll bending process design and the defects prediction. The minimum curvature of the roll-bending product is depending on the rib heights of the section profile and the yielding stress of the sheet materials. The tool and the roll bending process designs were evaluated using FEM simulations and verified with the experimental tests.The defects of wrinkles of edge can be avoided with suitable bending radius selection and proper roll bending process parameter setting. The comparison between the simulation predictions and the experimental results shows good agreement.

____________________________________________________________

Keywords: roll bending, roll forming, roll flower design, roller design, CAE

____________________________________________________________