电火花辅助切削中切屑形成机理及演变过程研究

doi:10.3901/JME.2025.19.407

机械工程学报 ›› 2025, Vol. 61 ›› Issue (19): 407-419.doi: 10.3901/JME.2025.19.407

• 制造工艺和装备 • 上一篇

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电火花辅助切削中切屑形成机理及演变过程研究

刘翔宇^1,2,3, 李常平^1,2, 徐默然⁴, 陈洁林⁵, 李树健⁵, 李鹏南⁵

1. 福建福耀科技大学智造与未来技术学院福州 350109;
2. 福建福耀科技大学高端装备未来智造技术教育部重点实验室福州 350109;
3. 中南大学轻合金研究院长沙 410083;
4. 武汉纺织大学机械工程与自动化学院武汉 430200;
5. 湖南科技大学机电工程学院湘潭 411201

收稿日期:2024-12-06 修回日期:2025-04-24 发布日期:2025-11-24
作者简介:刘翔宇，男，1998年出生。博士研究生。主要研究方向为难加工材料高效精密加工。E-mail：243801002@csu.edu.cn
李常平(通信作者)，男，1986年出生，博士，助理教授，硕士研究生导师。主要研究方向为难加工材料高效精密加工与智能切削。E-mail：lcp@fyust.edu.cn
基金资助:
国家自然科学基金(52275423, 52475452)、福建省自然科学基金(2025J01289)、高端装备未来技术教育部重点实验室开放基金(FIMFYUST-2025B12)和湖南省教育厅优秀青年基金(23B0481)资助项目。

Study on the Mechanism and Evolution Process of Chip Formation in Electric Discharge Assisted Cutting

LIU Xiangyu^1,2,3, LI Changping^1,2, XU Moran⁴, CHEN Jielin⁵, LI Shujian⁵, LI Pengnan⁵

1. School of Intelligent Manufacturing and Future Technologies, Fuyao University of Science and Technology, Fuzhou 350109;
2. Key Laboratory of Future Intelligent Manufacturing Technologies for High-end Equipment of Ministry of Education, Fuyao University of Science and Technology, Fuzhou 350109;
3. Light Alloy Research Institute, Central South University, Changsha 410083;
4. School of Mechanical Engineering & Automation, Wuhan Textile University, Wuhan 430200;
5. School of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201

Received:2024-12-06 Revised:2025-04-24 Published:2025-11-24

摘要/Abstract

摘要： 电火花辅助切削技术作为一种钛合金等难加工材料的高效精密加工方法，对于降低切削载荷、提高加工质量有着显著的成效。但当前对于电火花辅助切削钛合金加工切屑形成过程及形态演变行为研究相对较少。因此运用有限元仿真技术与实验相结合的研究方法，开展了电火花辅助切削的切屑形成过程及形态特征研究，探究了不同加工条件下的电火花辅助切削切屑形成规律。研究表明，电火花辅助切削通过改变材料表面温度场，改善了去除层在切削过程中的应力分布不均问题，降低了切削力与切屑锯齿化程度。相较传统切削，电火花辅助切削钛合金切屑锯齿化程度由0.372减至0.195，绝热剪切带宽度由1.7 μm增加至4.3 μm。该研究为热辅助切削加工的材料去除机理提供了重要的理论支撑。

关键词: 钛合金, 电火花辅助切削, 切屑, 切削机理，有限元分析

Abstract: Electric discharge-assisted cutting technology, an efficient and precise machining method for difficult-to-machine materials such as titanium alloys, significantly reduces cutting loads and enhances machining quality. Despite its advantages, limited research exists on the chip formation process and morphological evolution of titanium alloy chips in electric discharge-assisted cutting. This study combines finite element simulation with experimental methods to address this gap and investigate chip formation processes and morphological characteristics under varying processing conditions in electric discharge-assisted cutting. Results indicate that this technique improves the stress distribution uniformity in the material's removal layer by altering the surface temperature field,effectively reducing cutting force and the degree of chip serration. Compared to traditional cutting, the degree of serration of titanium alloy chips in electric discharge-assisted cutting has decreased from 0.372 to 0.195, and the width of the adiabatic shear band has increased from 1.7 μm to 4.3 μm. This study provides important theoretical support for the material removal mechanism of thermal assisted cutting machining.

Key words: titanium alloy, electric discharge-assisted cutting, chips, cutting mechanism, FEM

中图分类号:

TG661
TG506

刘翔宇, 李常平, 徐默然, 陈洁林, 李树健, 李鹏南. 电火花辅助切削中切屑形成机理及演变过程研究[J]. 机械工程学报, 2025, 61(19): 407-419.

LIU Xiangyu, LI Changping, XU Moran, CHEN Jielin, LI Shujian, LI Pengnan. Study on the Mechanism and Evolution Process of Chip Formation in Electric Discharge Assisted Cutting[J]. Journal of Mechanical Engineering, 2025, 61(19): 407-419.

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电火花辅助切削中切屑形成机理及演变过程研究

Study on the Mechanism and Evolution Process of Chip Formation in Electric Discharge Assisted Cutting

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