| MECHANICAL ENGINEERING |
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Influence of cooling/lubrication conditions on the drilling quality and thrust force of CFRP/Al stacks |
| ZHANG Yuxi1, WU Dan1, YANG Yapeng2, MA Xinguo1, LIANG Xiong1 |
1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
2. AVIC Xi'an Aircraft Industry(Group) Limited Company, Xi'an 710089, China |
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Abstract The influence of cooling/lubrication conditions on the tool wear, hole quality, and thrust force was analyzed using minimal quantity lubrication (MQL) and dry drilling for drilling carbon fiber reinforced plastic (CFRP) and aluminum stacks. A mechanical model was developed to analyze the increase in the thrust force and the hole quality characteristics with the number of holes when drilling CFRP layers. The relationships between the built-up edge (BUE), chip separation mechanism, and thrust force were also analyzed. The results show that the BUE influences the thrust force for the CFRP layer by changing the chisel edge real working length, BUE angle, friction angle, and stress states in the real shear plane of the carbon fiber. The differences between the thrust forces at the chisel edge with MQL and dry drilling are the main effects influencing the resultant thrust force. The carbon fibers with the high hardness extruded cutting edges break the BUE continuity which worsens the stack holes quality. MQL improves the machining quality for CFRP/Al stack drilling compared with dry drilling.
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| Keywords
stacks drilling
cooling/lubrication conditions
machining quality
thrust force
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Issue Date: 15 April 2018
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[1] 曹国顺. 工业机器人精确制孔试验研究[D]. 杭州:浙江大学, 2012. CAO G S. Experimental study on precision robotic drilling[D]. Hangzhou:Zhejiang University, 2012. (in Chinese)
[2] ZHANG L, LIU Z, TIAN W, et al. Experimental studies on the performance of different structure tools in drilling CFRP/Al alloy stacks[J]. The International Journal of Advanced Manufacturing Technology, 2015, 81(1-4):241-251.
[3] RAMULU M, BRANSON T, KIM D. A study on the drilling of composite and titanium stacks[J]. Composite Structures, 2001, 54(1):67-77.
[4] WANG C Y, CHEN Y H, AN Q L, et al. Drilling temperature and hole quality in drilling of CFRP/aluminum stacks using diamond coated drill[J]. International Journal of Precision Engineering and Manufacturing, 2015, 16(8):1689-1697.
[5] MONTOYAL M, CALAMAZ M, GEHIN D, et al. Evaluation of the performance of coated and uncoated carbide tools in drilling thick CFRP/aluminium alloy stacks[J]. The International Journal of Advanced Manufacturing Technology, 2013, 68(9-12):2111-2120.
[6] 南成根, 吴丹, 马信国, 等. 碳纤维复合材料/钛合金叠层钻孔质量研究[J]. 机械工程学报, 2016, 52(11):177-185. NAN C G, WU D, MA X G, et al. Study on the drilling quality of carbon fiber reinforced plastic and titanium stacks[J]. Chinese Journal of Mechanical Engineering, 2016, 52(11):177-185. (in Chinese)
[7] TSAO C C, HOCHENG H. Evaluation of thrust force and surface roughness in drilling composite material using Taguchi analysis and neural network[J]. Journal of Materials Processing Technology, 2008, 203(1-3):342-348.
[8] WANG X, KWON P Y, STURTEVANT C, et al. Comparative tool wear study based on drilling experiments on CFRP/Ti stack and its individual layers[J]. Wear, 2014, 317(1-2):265-276.
[9] SALOMON C. Process for the machining of metals or similarly acting materials when being worked by cutting tools:Germany 523594[P]. 1931.
[10] 南成根, 吴丹, 马信国, 等. CFRP/Al叠层钻孔粉状切屑对加工质量的影响[J]. 清华大学学报(自然科学版), 2015, 55(3):279-284. NAN C G, WU D, MA X G, et al. Influence of dust-like swarf on the drilling quality of carbon fiber reinforced plastic and aluminum stacks[J]. Journal of Tsinghua University (Science and Technology), 2015, 55(3):279-284. (in Chinese)
[11] 冯之敬. 制造工程与技术原理[M]. 北京:清华大学出版社, 2004. FENG Z J. Manufacturing and techniques[M]. Beijing:Tsinghua University Press, 2004. (in Chinese)
[12] 张厚江. 碳纤维复合材料(CFRP)钻削加工技术的研究[D]. 北京:北京航空航天大学, 1998. ZHANG H J. Study on drilling technology of CFRP[D]. Beijing:Beijing University of Aeronautics and Astronautics, 1998. (in Chinese)
[13] ZHANG L C. Cutting composites:A discussion on mechanics modelling[J]. Journal of Materials Processing Technology, 2009, 209(9):4548-4552.
[14] GUO D M, WEN Q, GAO H, et al. Prediction of the cutting forces generated in the drilling of carbon-fibre-reinforced plastic composites using a twist drill[J]. Proceedings of the Institution of Mechanical Engineers Part B:Journal of Engineering Manufacture, 2011, 226(1):28-42.
[15] LIU S, QI Z, LI Y, et al. On full life-cycle instantaneous force predicting when drilling CFRP-metal stacks[J]. International Journal of Advanced Manufacturing Technology, 2016, 88(1-4):1-11.
[16] LUO B, LI Y, ZHANG K, et al. A novel prediction model for thrust force and torque in drilling interface region of CFRP/Ti stacks[J]. The International Journal of Advanced Manufacturing Technology, 2015, 81(9):1497-1508.
[17] 任书楠, 吴丹, 陈恳. 钻削碳纤维增强型复合材料的主切削刃轴向力[J]. 清华大学学报(自然科学版), 2013, 53(4):487-492. REN S N, WU D, CHEN K. Thrust force on the main cutting edge when cutting carbon fiber reinforced plastics[J]. Journal of Tsinghua University (Science and Technology), 2013, 53(4):487-492. (in Chinese)
[18] 沈观林, 胡更开, 刘彬. 复合材料力学[M]. 北京:清华大学出版社, 2013. SHEN G L, HU G K, LIU B. Mechanics of composite materials[M]. Beijing:Tsinghua University Press, 2013. (in Chinese) |
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2018,
Vol. 58
