ForschungPublications
Influence of customized cutting edge geometries on the workpiece residual stress in hard turning

Influence of customized cutting edge geometries on the workpiece residual stress in hard turning

Categories Zeitschriften/Aufsätze (reviewed)
Year 2016
Authors Ventura, C., Breidenstein, B., Denkena, B.:
Published In Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, November 2016, 8 S.
Description

Depending on the intensity of mechanical and thermal loads during hard turning, compressive and/or tensile residual
stress can be obtained. However, only compressive residual stress contributes to avoid crack initiation and propagation and increase fatigue life. In order to induce compressive residual stress in the workpiece surface and subsurface, cutting edge geometry is one of the most important influence factors. Taking this into account, the influence of new customized cutting edge geometries on the parameters of a hook-shaped residual stress profile (typical of a hard turning process) is investigated and possible causes for the encountered phenomena are explained. It was found that edge geometries, which provide an increase in contact length between tool and workpiece, lead to higher compressive residual stress in the subsurface and deeper affected zones.

DOI 10.1177/0954405416685388