A New Tool Concept for Rotary Peen Forming with Defined Impact Positions

Abstract:

Rotary peen forming (RPF) has been developed as a new peen forming process in which the shot is held by a flexible connection and moved on a circular trajectory (see Fig. 1 below). The main advantage compared to a traditional shot peen forming (SPF) processes is that RPF does not need refeed of shot particles. Hence, RPF offers a compact machine design and a flexible use. The RPF process causes localized plastic deformation just as in traditional shot peen forming but involves tangential components which can create shear deformation in the plastic layer. These tangential components depend on the connection used for the setup. Compared to traditional shot peen forming, RPF shows different process characteristics in terms of coverage and the shape of indentations created on the surface of the workpiece. In this paper, a new tool concept for rotary peen forming is evaluated using experiments and numerical investigations of the process. The set-up uses a spring-attenuator system, which leads to more deterministic impact positions than previously used wire-based impactor concepts.

• Periodical: Key Engineering Materials (Volumes 504-506)
• Pages: 925-930
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.504-506.925
• Online since: February 2012
• Authors: Christoph Russig, Markus Bambach, Gerhard Hirt
• Keywords: Incremental Sheet Forming (ISF), New Process, Shot Peen Forming

References

[1] M. Bambach, C. Russig, G. Hirt, 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) 1126-1131.

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

[2] R.F. Voss, P.M. Winter, Peening device for tube finishing, United States Patent 3, 648, 498.