The influences of pulsed-laser-ablation and electro-discharge-grinding processes on the cutting performances of polycrystalline diamond micro-drills

详细信息    查看全文

• 作者：Paul Butler-Smith^a ; Maximilian Warhanek^b ; Dragos Axinte^a ; ^{dragos.axinte@nottingham.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; Michael Fay^a ; Jean-Francois Bucourt^c ; Raphael Ragueneau^c ; Konrad Wegener^b
• 关键词：Drilling ; Laser-beam-machining ; Electrical-discharge-machining
• 刊名：CIRP Annals - Manufacturing Technology
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：65
• 期：1
• 页码：105-108
• 全文大小：1418 K

文摘

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.