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On-line Access: 2024-04-16

Received: 2023-04-28

Revision Accepted: 2023-10-13

Crosschecked: 2024-04-16

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Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Enze YING

https://orcid.org/0009-0003-8926-1054

Daxi GENG

https://orcid.org/0000-0003-3591-4630

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Journal of Zhejiang University SCIENCE A 2024 Vol.25 No.4 P.275-291

http://doi.org/10.1631/jzus.A2300227


High-efficiency ultrasonic assisted drilling of CFRP/Ti stacks under non-separation type and dry conditions


Author(s):  Enze YING, Zehua ZHOU, Daxi GENG, Zhenyu SHAO, Zhefei SUN, Yihang LIU, Lianxing LIU, Xinggang JIANG, Deyuan ZHANG

Affiliation(s):  School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China; more

Corresponding email(s):   gengdx@buaa.edu.cn

Key Words:  Carbon fiber-reinforced plastic and titanium alloy (CFRP/Ti) stacks, Ultrasonic-assisted drilling (UAD), Cutting force, Surface integrity, Tool wear


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Enze YING, Zehua ZHOU, Daxi GENG, Zhenyu SHAO, Zhefei SUN, Yihang LIU, Lianxing LIU, Xinggang JIANG, Deyuan ZHANG. High-efficiency ultrasonic assisted drilling of CFRP/Ti stacks under non-separation type and dry conditions[J]. Journal of Zhejiang University Science A, 2024, 25(4): 275-291.

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number="4",
pages="275-291",
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doi="10.1631/jzus.A2300227"
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Abstract: 
In this study, to address the low efficiency for conventional ultrasonic-assisted drilling (UAD) of carbon fiber-reinforced plastic and titanium alloy (CFRP/Ti) stacks, feasibility experiments of non-separation UAD, in which continuous cutting between the tool and the workpiece occurs at a high feed rate, are carried out. The experimental results indicate that, compared to conventional separation UAD, the non-separation UAD effectively reduces the cutting forces by 24.2% and 1.9% for CFRP stage and 22.1% and 2.6% for the Ti stage at the feed rates of 50 and 70 μm/r, respectively. Furthermore, the non-separation UAD significantly improves hole quality, including higher hole diameter accuracy, lower hole surface roughness, and less hole damage. In addition, the non-separation UAD can decrease adhesive tool wear. This study demonstrates that, compared to conventional drilling (CD), the non-separation UAD can effectively improve drilling quality and tool life while maintaining high efficiency.

CFRP/Ti叠层结构不分离超声辅助干式高效钻削研究

作者:应恩泽1,周泽华2,耿大喜1,邵振宇3,孙哲飞1,刘逸航1,姜兴刚1,张德远1
机构:1北京航空航天大学,机械工程与自动化学院,中国北京,100191;2北京晨晶电子有限公司,中国北京,100015;3航天时代飞鸿技术有限公司,中国北京,100094
目的:超声辅助钻孔(UAD)因其可以提高加工质量和刀具寿命的优点,被广泛应用于CFRP/Ti叠层的制孔加工中,然而其分离切削的特性限制了加工效率。本文针对CFRP/Ti叠层传统分离型UAD效率低的问题,开展在高进给率下刀具与工件连续切削的不分离型UAD可行性实验,旨在保证加工质量的情况下,实现高效的超声振动辅助钻削加工。
创新点:1.建立超声振动钻削的运动学模型,提出不分离型UAD的概念,打破传统UAD必须实现分离切削的观念,从而提高加工效率;2.进行一系列可行性实验,验证不分离型UAD在提高加工效率的情况下,仍可以产生比常规钻削更好的加工质量与刀具寿命。
方法:1.从运动学角度分析超声振动钻削切削刃的运动轨迹,分析超声振动钻削的变角度和变速度切削特性,并研究不分离型分离超声振动钻削的刀具减粘和提升刀具切削能力的特性;2.开展一系列CFRP/Ti叠层的不分离型UAD可行性实验,验证该方法对加工质量(包括钻削推力、孔表面质量以及孔径精度等)的提升效果;3.研究不分离型超声振动钻削的刀具减粘和提升刀具切削能力的特性。
结论:1.相比于常规钻削,不分离型UAD可以有效降低钻削推力;2.不分离型UAD可以有效提升孔表面质量与孔径精度;3.不分离型UAD可以有效减少刀具粘结,提升刀具寿命。

关键词:CFRP/Ti叠层;超声辅助钻削;切削力;表面质量;刀具磨损

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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