Controllable generation of 3D textured abrasive tools via multiple-pass laser ablation
Controllable generation of 3D textured abrasive tools via multiple-pass laser ablation
复制标题
通过多道激光烧蚀可控生成 3D 纹理磨料工具
DOI：
10.1016/j.jmatprotec.2021.117149
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发表时间：
2021-03-26
影响因子：
6.3
通讯作者：
Liu, Gongyu
中科院分区：
文献类型：
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作者：
Li, Hao Nan;Zhao, Yong Jie;Liu, Gongyu
纹理磨料工具 (TAT) 提供了一种有效的解决方案来缓解加工过程中的热问题，而激光加工已被认为是最有前途的制造方法之一。 TAT 的激光烧蚀具有独特的工艺复杂性，这不仅归因于磨料工具的多孔结构，还归因于粘结磨料的多材料性质。由于这种复杂性，之前大多数基于激光生成 TAT 的研究都依赖于单程烧蚀策略，因此大多数报道的 TAT 仍然具有相同烧蚀深度的 2D 结构。尽管激光加工界已经研究了基于多通道激光烧蚀策略的深度控制 3D 结构的创建，但很少尝试将该技术应用于 TAT 制造，本文旨在填补这一空白。特别关注激光通过次数和扫描速度对烧蚀结构形状、深度、宽度和形态的影响。实验结果得到了理论解释的良好支持，在此基础上提出了实用的激光参数选择策略。通过该策略，我们成功生产了一种具有 2D 正弦轮廓的 TAT 和一种具有 3D 交错半球微结构的 TAT。还进行了磨削试验，以证明所生产的刀具具有优越的性能。这项工作可能为设计和制造嵌入复杂且功能性 3D 加工元件的下一代先进磨料工具提供重要参考。
Textured Abrasive Tool (TAT) offers an effective solution to alleviate thermal issues during machining processes, and laser machining has been identified as one of the most promising fabrication approaches. Laser ablation of TATs has unique process complexity thanks to not only the porous structure of abrasive tools but also the bondabrasive multiple-material nature. Due to this complexity, most previous investigations on laser-based generation of TATs relied on the single-pass ablation strategy, and therefore most reported TATs had still 2D structures with the same ablation depth. Although the creation of depth-controlled 3D structures based on multiple-pass laser ablation strategy has been investigated in the laser machining community, few attempt applied this technique to TAT fabrication, and this paper aims to fill this gap. Special attentions were paid to the effect of both laser pass numbers and scanning speeds on the ablated structure shapes, depths, widths, and morphologies. The experimental results were well supported by the theoretical explanations, based on which the pragmatic laser parameter selection strategy was proposed. With the strategy, we successfully produced one TAT having 2D sinusoidal profiles and one with 3D staggered hemisphere micro-structures. Grinding trials were performed as well to prove the superior performances of the produced tool. This work might provide important reference for designing and manufacturing the next-generation advanced abrasive tools embedded with complex and functional 3D machining elements.