The influences of pulsed-laser-ablation and electro-discharge-grinding processes on the cutting performances of polycrystalline diamond micro-drills. Issue 1 (2016)

• Record Type: Journal Article
• Authors: Butler-Smith, Paul; Warhanek, Maximilian; Axinte, Dragos; Fay, Michael; Bucourt, Jean-Francois; Ragueneau, Raphael; Wegener, Konrad
• Is Part Of: CIRP annals. Volume 65:Issue 1(2016)
• Page Start: 105
• Page End: 108
• Publication Date: 2016
• Subjects: Drilling -- Laser-beam-machining -- Electrical-discharge-machining; Production engineering -- Research -- Periodicals; 670.5
• DOI: 10.1016/j.cirp.2016.04.008
• Languages: English
• ISSNs: 0007-8506

Abstract

Abstract: Geometrically complex micro-tools are manufactured via processes which can affect their cutting performances. This paper studies the effects pulsed-laser-ablation and electro-discharge-grinding on polycrystalline diamond matrices and their binder phases at nanometric scales, revealing distinct differences in the resulting substructures. The dissimilarities in micro-scale material removal phenomena of these manufacturing processes combined with their effects on the generated surface topographies and cutting-edge geometries can significantly influence the wear and cutting performance of micro-drills. A study on the micro-drilling of a ceramic matrix composite workpiece material confirms that pulsed-laser-ablation of composite diamond structures offers a step-change in the fabrication of micro-tools.