Plettke R, Vatter P, Vipavc D (2012)
Publication Type: Journal article
Publication year: 2012
Publisher: Wiley-VCH Verlag
Book Volume: SPL. ISSUE
Pages Range: 307-310
ISBN: 9783514007970
Three-roll-push-bending is an innovative freeform bending process for the production of complex tube geometries with a variable distribution of curvature and torsion. The process design is complicated since there are a lot of parameters which have an impact on the formation of the bending arc. In industrial application a trial-and-error approach is commonly used. This paper presents a method for the process design of 3-dimensional freeform bended tubes. It defines a format to describe the associated geometries mathematically in a way that corresponds with the machine parameters. The mathematical description is based upon a discrete application of the Frenet-Serret formulations on common CAD file formats. The correlation between process parameters and resulting geometry, given by its curvature and torsion, has been examined. Moreover, the paper describes how to retrieve suitable process parameters using a characteristic map. The method can be utilized in process design, as well as to identify the parameters of a bended tube for quality control purposes. It was applied and first sampling points are presented. To describe the linear dependency between the rotation of the feeding arm and the tube's torsion, a new variable called the torsion adjustment coefficient will be introduced. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
APA:
Plettke, R., Vatter, P., & Vipavc, D. (2012). Basics of process design for 3d freeform-bending. Steel Research International, SPL. ISSUE, 307-310.
MLA:
Plettke, Raoul, Peter Vatter, and Daniel Vipavc. "Basics of process design for 3d freeform-bending." Steel Research International SPL. ISSUE (2012): 307-310.
BibTeX: Download