Robot based machine hammer peening using an electromagnetic driven hammering device

Abstract

The usability of a component and in particular its functional performance is highly dependent on the properties of its surface and subsurface region. Machine hammer peening is a manufacturing process for the mechanical surface treatment of workpieces, with the aim to induce compressive residual stresses in near surface layers. This comes along with strain hardening effects and increased surface hardness of the edge layer. By the use of adequate process parameters, it is even possible to modify the surface topography. In order to implement machine hammer peening processes, NC-guided machine tools have to be used to generate single deterministic tool contact marks. In the course of this work an electromagnetic actuator system will be implemented on a 6-axes industrial robot KUKA KR30-3 and the static and dynamic behaviour of the robot during the hammer peening process will be investigated in order to evaluate the applicability to generate deterministic patterns.