The use of nanoadditives in lubricants has gained much attention to the research community due to the enhancement of tribological properties and cooling capabilities. This paper studies the advantages of using a MQL (Minimum Quantity of Lubrication) system and nanoadditive in the manufacture of microneedle arrays in Ti6Al4V ELI alloy. Tungsten carbide ball nose tools with a cutting diameter of 200 µm were used in experimental tests. Surface and dimensional characterization was performed to evaluate the impact of a nanoadditive to a vegetable-based oil. Additionally, cutting forces and cutting edge radius (CER) were measured while needles were machined. Experimental tests confirmed that micro end milling with nanoadditives provide slightly better dimensional features and low cutting forces compared to oil. The performance of nanoadditives resulted in a reduction of surface roughness (~ 0.3 μm). Qualitative study of microneedles illustrated burr formation on needle surface manufactured without a nanoadditive solution. Results reveal an increment of CER using low feed rate values (2.0 µm/flute) while a reduction of CER was observed with feed rates up to 2.5 µm/flute. Our results indicated that the addition of nanoadditives to vegetable oil promotes a better product surface topography and cutting tool performance.

由于摩擦学性能和冷却能力的增强，纳米添加剂在润滑剂中的使用引起了研究界的广泛关注。本文研究了使用 MQL（最小润滑量）系统和纳米添加剂制造 Ti6Al4V ELI 合金微针阵列的优势。在实验测试中使用了切削直径为 200 µm 的碳化钨球头刀具。进行表面和尺寸表征以评估纳米添加剂对植物油的影响。此外，在加工针时测量切削力和切削刃半径 (CER)。实验测试证实，与油相比，使用纳米添加剂的微立铣刀具有稍好的尺寸特征和较低的切削力。纳米添加剂的性能降低了表面粗糙度（~0.3 μm）。微针的定性研究说明了在没有纳米添加剂溶液的情况下制造的针表面毛刺的形成。结果显示，使用低进料速率值（2.0 µm/槽）时 CER 增加，而进料速率高达 2.5 µm/槽时观察到 CER 降低。我们的结果表明，将纳米添加剂添加到植物油中可以促进更好的产品表面形貌和刀具性能。