The influences of pulsed-laser-ablation and electro-discharge-grinding processes on the cutting performances of polycrystalline diamond micro-drills
The influences of pulsed-laser-ablation and electro-discharge-grinding processes on the cutting performances of polycrystalline diamond micro-drills
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DOI：
10.1016/j.cirp.2016.04.008
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发表时间：
2016-01-01
影响因子：
4.1
通讯作者：
Wegener, Konrad
中科院分区：
文献类型：
--
作者：
Butler-Smith, Paul;Warhanek, Maximilian;Wegener, Konrad
几何复杂的微型刀具是通过影响其切削性能的工艺制造的。在纳米尺度上研究了脉冲激光烧蚀和放电磨削对多晶金刚石基体及其结合相的影响，揭示了其子结构的明显差异。这些制造工艺在微尺度材料去除现象上的差异，以及它们对生成的表面形貌和尖端几何形状的影响，会显著影响微钻头的磨损和切削性能。对陶瓷基复合材料工件的微钻研究证实，脉冲激光烧蚀复合金刚石结构为微工具的制造提供了一个台阶式的变化。(c) 2016年cirp。
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. (C) 2016 CIRP.