Experimental Investigations of Different Tool Concepts for Rotary Peen Forming

Abstract:

Rotary Peen Forming (RPF) is a new peen forming process, comparable to Shot Peen Forming (SPF), in which the shot is held by a flexible connection and moved on a circular trajectory. Hence, RPF uses less machine components and therefore offers a compact machine design and a more flexible use than SPF. Just as conventional Shot Peen Forming the RPF process causes localized plastic deformation but involves tangential components which can create shear deformation in the plastic layer. In this paper, three different RPF tool concepts are compared and the applicability of Rotary Peen Forming for the production of slightly curved parts is analyzed. The first design offers a stochastic impact distribution, the second design leads to deterministic impacts. The third one is a further enhancement of the previous designs and combines the advantages of both. In contrast to previous tests a new, stiffer testing setup was used which offers good comparability of the tool concepts. Particularly the forming potential in terms of the realization of high curvatures and the surface quality are investigated. Depending on the tool concept the surface quality differs significantly, but generally RPF allows the forming of curvatures that are commonly used for aerospace structural parts.

• Periodical: Key Engineering Materials (Volume 549)
• Pages: 53-60
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.549.53
• Online since: April 2013
• Authors: Christoph Russig, Markus Bambach, Gerhard Hirt
• Keywords: Incremental Sheet Forming (ISF), New Processes, Rotary Peen Forming, Shot Peen Forming

References

[1] M. Bambach, C. Russig, G. Hirt and J. Allwood: The Development of a new Peen Forming Process – Rotary Peen Forming, Proceedings of the 10th International Conference on Technology of Plasticity, ICTP (2011), pp.1126-1131.

DOI: 10.4028/www.scientific.net/kem.504-506.925

[2] R.F. Voss and P.M. Winter. Peening device for tube finishing, U.S. Patent 3,648,498. (1972)

[3] C. Russig, M. Bambach and G. Hirt: A New Tool Concept for Rotary Peen Forming with Defined Impact Positions, Key Engineering Materials, Vols. 504-506, (2012), pp.925-930.

DOI: 10.4028/www.scientific.net/kem.504-506.925