铜微针阵列结构犁挤-切削加工及其成形机理

doi:10.3901/JME.2025.17.371

机械工程学报 ›› 2025, Vol. 61 ›› Issue (17): 371-380.doi: 10.3901/JME.2025.17.371

• 制造工艺与装备 • 上一篇

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铜微针阵列结构犁挤-切削加工及其成形机理

张保玉^1,2, 邓文君³, 汤勇⁴, 唐恒⁴

1. 安徽大学电气工程与自动化学院合肥 230601;
2. 合肥工业大学机电产品低碳循环利用技术与装备安徽省重点实验室合肥 230009;
3. 华南理工大学机械与汽车工程学院广州 510641;
4. 深圳大学机电与控制工程学院深圳 518060

收稿日期:2024-09-16 修回日期:2025-02-09 发布日期:2025-10-24
作者简介:张保玉，男，1993年出生，博士，讲师，硕士研究生导师。主要研究方向为金属切削工艺及机理，表面功能结构设计及制造。E-mail：zhangbaoyu@ahu.edu.cn;邓文君，男，1978年出生，博士，教授，博土研究生导师。主要研究方向为金属切削机理、复合刀具应用。E-mail：dengwj@scut.edu.cn;汤勇，男，1962年出生，博士，教授，博士研究生导师。主要研究方向为微制造、表面功能结构先进制造及其作用机理。E-mail：ytang@szu.edu.cn;唐恒(通信作者)，男，1989年出生，博士，副教授/特聘研究员，博士研究生导师。主要研究方向为金属切削加工与工艺、表面功能结构制造。E-mail：tangheng@szu.edu.cn
基金资助:
国家自然科学基金(52475481, 52235011)、中央科研基本业务费专项资金(PA2024GDSK0067)、安徽省自然科学基金(2408085QE172)和广东省自然科学基金(2025A1515010919)资助项目。

Ploughing Extrusion-cutting Method for Copper Microneedle Arrays and its Forming Mechanism

ZHANG Baoyu^1,2, DENG Wenjun³, TANG Yong⁴, TANG Heng⁴

1. School of Electrical Engineering and Automation, Anhui University, Hefei 230601;
2. Anhui Province Key Laboratory of Low Carbon Recycling Technology and Equipment for Mechanical and Electrical Products, Hefei University of Technology, Hefei 230009;
3. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641;
4. School of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060

Received:2024-09-16 Revised:2025-02-09 Published:2025-10-24

摘要/Abstract

摘要： 金属微针阵列是滴状冷凝强化表面的通用基底，在沙漠集水、海水淡化、高效换热等领域得到广泛应用。然而，微针针体的细长锥形结构和极小尺寸导致现有加工工艺无法实现微针阵列结构的高效制造。为此，基于塑性金属单元切屑成形原理，提出一种微针阵列犁挤-切削加工新方法，并对微针阵列的加工参数和成形机理进行分析。结果发现，微针阵列的成形能力与相对犁切深度t_pd和刀具前角γ_c呈负相关性，与犁切深度t_p呈正相关性。前置犁挤过程将切削层金属分为分离层和成形层，分离层用于产生微针阵列底部的连续带材，成形层通过金属大塑性“层积和挤裂”过程产生圆形截面的微针单元。犁挤-切削加工法通过调控工艺参数可制备挺拔、细长的针体结构，是一种简单、可行的微针阵列高效加工方法。

关键词: 犁挤-切削加工, 微针阵列结构, 切屑成形, 高效制造, 表面结构

Abstract: Metal microneedle arrays are versatile substrates for droplet-like condensation-enhanced surfaces, which are widely used in desert water harvesting, seawater desalination, and efficient heat transfer. However, the elongated conical structure and extremely small size of the microneedle body led to the existing machining process failing to realize its efficient fabrication. Thus, according to the plastic metal unit chip forming principle, a new ploughing extrusion-cutting (PE-C) method for efficient manufacturing microneedle arrays is proposed, and the machining parameters and forming mechanism are comprehensively analyzed. Results show that forming ability of microneedle arrays is negatively correlated with the relative ploughing-cutting depth t_pd and tool rake angle γ_c, and positively correlated with the ploughing depth t_p. The forward PE divided the cut layer into separation and forming layers. The separation layer is used to produce a continuous strip at the bottom of microneedle arrays. The forming layer underwent a large plastic “lamination and conductive cracking” process, producing microneedle units with a circular cross-section. In conclusion, PE-C could prepare a stiff and slender microneedle structure by regulating processing parameters, which was a simple and feasible method for efficiently fabricating microneedle arrays.

Key words: ploughing extrusion-cutting, microneedle array structure, chip forming, efficient manufacturing, surface structure

中图分类号:

TG506

张保玉, 邓文君, 汤勇, 唐恒. 铜微针阵列结构犁挤-切削加工及其成形机理[J]. 机械工程学报, 2025, 61(17): 371-380.

ZHANG Baoyu, DENG Wenjun, TANG Yong, TANG Heng. Ploughing Extrusion-cutting Method for Copper Microneedle Arrays and its Forming Mechanism[J]. Journal of Mechanical Engineering, 2025, 61(17): 371-380.

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铜微针阵列结构犁挤-切削加工及其成形机理

Ploughing Extrusion-cutting Method for Copper Microneedle Arrays and its Forming Mechanism

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