Mechanism study of the electrical discharge ablation milling with a microcutting depth

Abstract

Tool wear inevitably occurs during electrical discharge milling (ED milling), adversely affecting the form precision of machined features. Specifically, radial tool wear negatively influences copying precision. In this study, electrical discharge ablation milling (EDA milling) with a microcutting depth was investigated to improve the machining precision of discharge milling. In the proposed method, the cutting depth of a single layer was kept at the micron level, which is smaller than the discharge gap, and the electrode was set to a fast feeding rate at a constant speed. The microcutting depth of a single layer made the discharge concentrate at the end of the electrode while avoiding the side. Under this method, radial tool wear is prevented to realize high-precision discharge milling. The discharge state and high-precision mechanism of the proposed method were analyzed. Contrast experiments were conducted to compare conventional electrical discharge milling (ED milling), conventional electrical discharge ablation milling with a large cutting depth (EDA milling with a large cutting depth), and EDA milling with a microcutting depth. Results indicated that when peak current was 30A (pulse duration was 150 μs and pulse interval was 120 μs), the machining efficiency of the proposed method (18.8 mm3/min) was 9.5 times that of ED milling (1.97 mm3/min) and was 62% higher than that of EDA milling with a large cutting depth (11.6 mm3/min). Besides, the surface quality and cross-sectional shape precision of the straight groove were significantly improved compared with EDA milling with a large cutting depth.

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Data availability

The data and material set supporting the results are included within the article.

References

  1. 1.

    Ho KH, Newman ST (2003) State of the art electrical discharge machining (EDM). Int J Mach Tools Manuf 43(13):1287–1300

    Article  Google Scholar 

  2. 2.

    Nikalje AM, Kumar A, Srinadh KVS (2013) Influence of parameters and optimization of EDM performance measures on MDN 300 steel using Taguchi method. Int J Adv Manuf Technol 69:41–49

    Article  Google Scholar 

  3. 3.

    Pham DT, Dimov SS, Bigot S, Ivanov A, Popov K (2004) Micro-EDM--recent developments and research issues. J Mater Process Technol 149(1-3):50–57

    Article  Google Scholar 

  4. 4.

    Mohri N, Suzuki M, Furuya M, Saito N, Kobayashi A (1995) Electrode wear process in electrical discharge machinings. CIRP Ann 44(1):165–168

    Article  Google Scholar 

  5. 5.

    Kunieda M, Kobayashi T (2004) Clarifying mechanism of determining tool electrode wear ratio in EDM using spectroscopic measurement of vapor density. J Mater Process Technol 149(1-3):284–288

    Article  Google Scholar 

  6. 6.

    Cheong HG, Kim YS, Chu CN (2019) Effect of reverse current on tool wear in micro-electrical discharge milling. Precis Eng 55:484–490

    Article  Google Scholar 

  7. 7.

    Wang J, Yang F, Qian J, Reynaerts D (2016) Study of alternating current flow in micro-EDM through real-time pulse counting. J Mater Process Technol 231:179–188

    Article  Google Scholar 

  8. 8.

    Bissacco G, Tristo G, Hansen HN, Valentincic J (2013) Reliability of electrode wear compensation based on material removal per discharge in micro EDM milling. CIRP Ann 62:179–182

    Article  Google Scholar 

  9. 9.

    Zarepour H, Tehrani AF, Karimi D, Amini S (2007) Statistical analysis on electrode wear in EDM of tool steel DIN 1.2714 used in forging dies. J Mater Process Technol 187-188:711–714

    Article  Google Scholar 

  10. 10.

    Zhang L, Du J, Zhuang X, Wang Z, Pei J (2015) Geometric prediction of conic tool in micro-EDM milling with fix-length compensation using simulation. Int J Mach Tools Manuf 89:86–94

    Article  Google Scholar 

  11. 11.

    Pei J, Zhang L, Du J, Zhuang X, Zhou Z, Wu S, Zhu Y (2017) A model of tool wear in electrical discharge machining process based on electromagnetic theory. Int J Mach Tools Manuf 117:31–41

    Article  Google Scholar 

  12. 12.

    Bleys P, Kruth J-P, Lauwers B, Zryd A, Delpretti R, Tricarico C (2002) Real-time tool wear compensation in milling EDM. CIRP Ann 51(1):157–160

    Article  Google Scholar 

  13. 13.

    Bleys P, Kruth J-P, Lauwers B (2004) Sensing and compensation of tool wear in milling EDM. J Mater Process Technol 149(1-3):139–146

    Article  Google Scholar 

  14. 14.

    Bellotti M, De Eguilior Caballero JR, Qian J, Reynaerts D (2021) Effects of partial tool engagement in micro-EDM milling and adaptive tool wear compensation strategy for efficient milling of inclined surfaces. J Mater Process Technol 288:116852

    Article  Google Scholar 

  15. 15.

    Yu ZY, Masuzawa T, Fujino M (1998) Micro-EDM for three-dimensional cavities - development of uniform wear method. CIRP Ann 47(1):169–172

    Article  Google Scholar 

  16. 16.

    Yu H-L, Luan J-J, Li J-Z, Zhang Y-S, Yu Z-Y, Guo D-M (2010) A new electrode wear compensation method for improving performance in 3D micro EDM milling. J Micromech Microeng 20(5):055011

    Article  Google Scholar 

  17. 17.

    Liang W, Tong H, Li Y, Li B (2019) Tool electrode wear compensation in block divided EDM process for improving accuracy of diffuser shaped film cooling holes. Int J Adv Manuf Technol 103:1759–1767

    Article  Google Scholar 

  18. 18.

    Li Z, Bai J, Zhu X (2016) Research on the depth error in micro electrical discharge milling. Procedia CIRP 42:638–643

    Article  Google Scholar 

  19. 19.

    Wang F, Liu Y, Zhang Y, Tang Z, Ji R, Zheng C (2014) Compound machining of titanium alloy by super high speed EDM milling and arc machining. J Mater Process Technol 214(3):531–538

    Article  Google Scholar 

  20. 20.

    Zhao W, Gu L, Xu H, Li L, Xiang X (2013) A novel high efficiency electrical erosion process - blasting erosion arc machining. Procedia CIRP 6:621–625

    Article  Google Scholar 

  21. 21.

    Wang X, Liu Z, Qiu M, Hui Z, Tian Z, Huang Y (2014) Mechanism of electrical discharge machining ablation. Mater Manuf Process 29(11-12):1367–1373

    Article  Google Scholar 

  22. 22.

    Han Y, Liu Z, Cao Z, Kong L, Qiu M (2018) Mechanism study of the combined process of electrical discharge machining ablation and electrochemical machining in aerosol dielectric. J Mater Process Technol 254:221–228

    Article  Google Scholar 

Download references

Acknowledgments

The authors extend their sincere thanks to those who contributed in the preparation of the instructions.

Funding

This work is supported by the Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant Number KYCX18_0254) and National Natural Science Foundation of China (Grant Number 51975290).

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Correspondence to Zhidong Liu.

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Han, Y., Liu, Z., Chen, Q. et al. Mechanism study of the electrical discharge ablation milling with a microcutting depth. Int J Adv Manuf Technol (2021). https://doi.org/10.1007/s00170-021-06659-6

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Keywords

  • Electrical discharge machining (EDM)
  • Microcutting depth
  • Rapid feed
  • Electrical discharge ablation milling (EDA milling)
  • High precision