Analysis of dimple textured surfaces on cutting tools
Analysis of dimple textured surfaces on cutting tools
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DOI：
10.1007/s40430-016-0692-6
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发表时间：
2017-10-01
影响因子：
2.2
通讯作者：
Mallmann, Guilherme
中科院分区：
文献类型：
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作者：
Stoeterau, Rodrigo L.;Janssen, Andreas;Mallmann, Guilherme
本文介绍了在刀具上形成凹坑结构表面以减少切屑与刀具前刀面之间的摩擦的探索性研究。目的是研究凹坑结构表面对切屑与结构刀具相互作用的影响。利用超短脉冲激光对硬质合金刀片前刀面进行了两种不同形貌的半球形微韧窝结构化。使用三种不同的材料进行加工实验：中碳钢ANSI 1045，铸铁ANSI GGG 40，和铝合金ANSI 2024-T6。在不同的切削速度和进给量下，在恒定的切削深度下，使用10%的乳化切削液进行了实验。使用非结构化工具进行了参考实验，并对结果进行了比较。结果表明，切屑与结构前刀面之间的相互作用取决于切屑的形成。具有大接触长度的连续切屑可以产生足够的提升流体动力以引起切削力减小。对于片状分段和不连续切屑，没有观察到显著的切削力降低。切削参数和压痕的集中度也是设计中需要考虑的重要因素。
This paper presents the exploratory study of dimple-structured surfaces on cutting tools to reduce the friction between chip and the tool rake face. The objective is to study the effects of dimple-structured surfaces to the interactions between the chip and structured tool. Carbide inserts rake face which was structured with hemi-spherical micro-dimples with two different patterns using ultra-short pulse laser. Machining experiments were performed using three different materials: medium carbon grade steel ANSI 1045, cast iron ANSI GGG40, and aluminum alloy ANSI 2024-T6. The experiments were performed, under different cutting speeds and feed rates, at a constant cutting depth, and using 10% cutting fluid emulsion. Reference experiments were conducted with non-structured tool, and the results were compared. The results show that the interactions between the chip and structured rake face depend on the chip formation. Continuous chips with high contact length can produce enough lift hydrodynamic force to induce a cutting force reduction. No significance reduction on the cutting forces was observed for lamellar-segmented and discontinuous chips. The cutting parameters and the concentration of dimples are also importance design factor to be considered.