Paper Titles
Case Studies and Applications of Flowforming to Aircraft Engine Component Manufacturing
p.443
Multi Shape Sheet Hydroforming Tooling Design
p.453
Improvement of Filling of Die Corners in Box-Shaped Tube Hydroforming by Control of Wrinkling
p.461
Modeling Flexforming (Fluid Cell Forming) Process with Finite Element Method
p.469
Integrated Tube and Double Sheet Hydroforming Technology - Optimised Process for the Production of a Complex Part
p.477
Hydromechanical Deep Drawing of Funerary Vases: A Suitable Alternative to the Traditional Forming Processes
p.485
Validation of a New Finite Element for Incremental Forming Simulation Using a Dynamic Explicit Approach
p.495
Determination of Strain in Incremental Sheet Forming Process
p.503
Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming
p.511

Integrated Tube and Double Sheet Hydroforming Technology - Optimised Process for the Production of a Complex Part

Article Preview

Abstract:

The possibility to produce lightweight components with a complex geometry enhanced, in the last decades, the industrial application of the tube hydroforming and, more recently and restricted to specific industrial fields, of the sheet hydroforming technology. The integration in one tool of a tube and a double sheet hydroforming process represents an innovative technology which further emphasises the advantages offered by hydroforming in terms of costs reduction and complexity of the manufactured part. This paper describes the design and the construction of a complex hollow part resulting from the simultaneous hydroforming of two sheets and a tubular component in one tool. The focus is set in particular on the optimisation of the joining zone between tube and sheet pair, whose geometry allows a “metallic” sealing of the gap between the sheets and the tube, i.e. without using sealing components. The contact between tube and sheet pair allows the transmission of the axial force used to support the bulging of the tube to the sheet blanks, thus increasing their draw-in in the die and, consequently, avoiding the occurrence of tearing on the part. The paper describes the optimisation of different process parameters like the shape and the dimension of the blanks, their initial positioning in the tool, the value of the axial force applied to the tubular component and the blankholder force during the preforming and the calibrating stages.

You might also be interested in these eBooks
Sheet Metal 2007 View Preview

Info:

Periodical:

Key Engineering Materials (Volume 344)

Pages:

477-484

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.344.477

Citation:

Cite this paper

Online since:

July 2007

Authors:

Manfred Geiger, Marion Merklein, Massimo Cojutti

Keywords:

Double Sheet Hydroforming, Process Optimisation, Tube Hydro Forming

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] P. Hein, Innenhochdruck-Umformen von Blechpaaren: Modellierung, Prozeßauslegung und Prozeßführung. Dissertation, Volume: Manufacturing Technology, Germany.

Google Scholar

[2] M. Celeghini, Wirkmedienbasierte Blechumformung: Grundlagenuntersuchungen zum Einfluss von Werkstoff und Bauteilgeometrie. Dissertation, Volume: Manufacturing Technology, Germany.

Google Scholar

[3] A. Blankl, O. Kreis and M. Merklein, Optimized process control strategy for the laser cutting and welding of complex hydroforming parts. In: Proceedings of Lasers in Manufacturing 2005, Germany, p.127 R 20 R 20 R 20 R 20 R 13 R 8.

Google Scholar

[4] O. Kreis, M. Celeghini and M. Merklein, Integrated manufacturing by hydroforming, laser welding and cutting. In: Proceedings of the 11th International Conference on Sheet Metal 2005, Germany, p.393.

Google Scholar

[5] M. Geiger, M. Celeghini and S. Novotny, Advanced process strategies for the hydroforming of complex structures. In: Proceedings of XIV. Workshop on Supervising and Diagnostics of Machining Systems 2003, Poland, p.65.

Google Scholar

[6] M. Koç and T. Altan, An overall review of the tube hydroforming (THF) technology. In: Journal of material processing technology 2001, Vol. 108, Issue 3, p.384.

DOI: 10.1016/s0924-0136(00)00830-x

Google Scholar

[7] M. Koç and T. Altan, Prediction of forming limits and parameters in the tube hydroforming process. In: International Journal of Machine Tools and Manufacture 2002, Vol. 42, Issue 1, p.123.

DOI: 10.1016/s0890-6955(01)00048-7

Google Scholar