Abstract
Elliptical vibration-assisted cutting (EVC) technology is widely used to process hard and brittle materials such as optical glass. However, applying optical glass is severely inhibited by the subsurface damage caused during processing. To solve this problem, this paper studies the surface formation of BK7 optical glass processed by EVC. The removal mechanism of BK7 in EVC ductile processing was analyzed. A critical undeformed cut depth prediction model for EVC processing BK7 was established. The EVC marking experiment of BK7 is carried out. The optimization principle of BK7 processing parameters is summarized. The results show that when the maximum cutting depth is less than or equal to the critical undeformed cutting depth, or greater than the critical undeformed cutting depth, but the set critical parameter △ is less than 0, the processed surface of BK7 optical glass can achieve efficient ductility formation. The critical undeformed cutting depth decreases with the increase of cutting speed and increases with the increase of vibration frequency. By comparing the experimental results with the predicted results, the average error of the two is only 12%, which verifies the model’s accuracy. To ensure the cutting efficiency and stability of the cutting system, selecting a small cutting speed and large vibration frequency is conducive to the ductile machining of BK7 using EVC.
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Funding
This work was supported by the Natural Science Foundation of Jilin Province (YDZJ202201ZYTS534), Jilin Provincial International Cooperation Key Laboratory for High-Performance Manufacturing and Testing (20220502003GH), and Jilin Provincial Department of Education Research Project (JJKH20230751KJ).
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Mingming Lu: investigation and methodology. Yakun Yang: literature collection and summary and data curation. Yuhang Ma: specific experimental operation. Jieqiong Lin: conceptualization, funding acquisition, and supervision. Yongsheng Du: writing—review and editing.
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Lu, M., Yang, Y., Ma, Y. et al. Critical depth of cut modeling and ductility domain removal mechanism in elliptical vibration-assisted cutting BK7 optical glass. Int J Adv Manuf Technol 131, 2759–2770 (2024). https://doi.org/10.1007/s00170-023-12293-1
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DOI: https://doi.org/10.1007/s00170-023-12293-1