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- 2019
冷却空气流向对CFRP制孔刀具磨损及孔质量的影响
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Abstract:
在加工碳纤维增强树脂基复合材料（CFRP）时多用冷却工艺来提升加工质量。其中，空气冷却工艺因其方便性被广泛用于实际加工中。然而，目前尚缺少空气冷却方向对刀具磨损和加工质量的研究。文章通过控制冷却空气的方向，开展了干式切削、正向喷气和逆向吸气冷却条件下钻削CFRP材料的研究。获得了上述冷却条件对双顶角刀具第二主切削刃末端磨损的影响规律，发现气体冷却都能有效抑制刀具磨损，且在对出口温度影响相近的条件下，逆向冷却比正向冷却能够更好地抑制磨损。进而分析了冷却条件对钻削出口损伤的抑制效果，发现冷却、冷却方式对孔出口撕裂深度的抑制作用都较小，但逆向吸气冷却能够有效减小出口的毛刺高度，是一种有效提高制孔质量的冷却工艺。 In the drilling of carbon fibre reinforced plastic (CFRP) components, the cooling process is usually adopted to prolong the tool life and improve the machining quality. Among them, air cooling technology is widely used in actual processing because of its convenience. However, there is a lack of research about air cooling direction on tool wear and machining quality. In this paper, by controlling the flow direction of cooling air, an experimental study of drilling CFRP materials was carried out under dry drilling, forward jet cooling and reverse suction cooling. Meanwhile the change regulation of tool wear on the secondary cutting edge of the double apex angle drill tool was acquired. It is found that gas cooling can effectively restrain tool wear. Under the similar influence of exit temperature by gas cooling, the reverse suction cooling can better effectively restrain the tool wear than forward jet cooling. Furthermore, the inhibition effect of cooling conditions on drilling export damage was analysed, it is found that the tear of hole exit is less restrained by cooling and cooling ways. The height of burrs, however, is restrained obviously by the cooling ways. The reverse suction cooling can effectively reduce the height of burrs. It can be a suitable cooling process in drilling CFRP. NSFC-辽宁联合基金重点项目（U1508207）；国家自然科学基金面上项目（51575082）；大连市科技重大专项计划（2018ZD14GX005）；国家创新群体（51621064）；中央高校基本科研业务费（DUT16TD01
| [1] | 鲍永杰. C/E复合材料制孔缺陷成因与高效制孔技术[D]. 大连:大连理工大学, 2010. BAO Y J. The formation mechanism of disfigurements during drilling and the high-efficiency techniques of drilling C/E composite[D]. Dalian:Dalian University of Technology, 2010(in Chinese). |
| [2] | 陈涛, 苗光, 李素燕. 碳纤维复合材料切削加工技术研究进展[J]. 哈尔滨理工大学学报, 2016, 21(2):71-77. CHEN T, MIAO G, LI S Y. Review of the machining technology of carbon fiber reinforced composite[J]. Journal of Harbin University of Science and Technology, 2016, 21(2):71-77(in Chinese). |
| [3] | ALMEIDA J R M. Effects of distilled water and saline solution on the inter-laminar shear strength of an aramid/epoxy composite[J]. Composite, 1991, 22(6):448-450. |
| [4] | JIA Z Y, FU R, WANG F J, et al. Temperature effects in end milling carbon fiber reinforced polymer composites[J]. Polymer Composites, 2018, 39(2):437-447. |
| [5] | 桂林景. 基于MQL的难加工材料螺旋铣孔工艺研究[D]. 天津:天津大学, 2012. GUI L J. Study on helical milling of difficult-to-cut materials based on MQL[D]. Tianjin:Tianjin University, 2012(in Chinese). |
| [6] | ISKANDAR Y, TENDOLKAR A, ATTIA M H, et al. Flow visualization and characterization for optimized MQL machining of composites[J]. CIRP Annals-Manufacturing Technology, 2014, 63(1):77-80. |
| [7] | PARK K H. Tool wear analysis in various machining processes and study of minimum quantity lubrication(MQL)[D]. Michigan:Michigan State University, 2010. |
| [8] | XIA T. Investigation of drilling performance in cryogenic drilling on CFRP composite laminates[D]. Kentucky:University of Kentucky, 2014. |
| [9] | MOCHIZUKI S, MURATA A, FUKUNAGA M. Effect of rib arrangement on pressure drop and heat transfer in rib-roughened channel with a sharp 180° turn[J]. ASME Journal of turbomachinery, 1997, 119:610-616. |
| [10] | 朱红霞, 沈兴全, 张利新. 准干式深孔钻削中温度场与刀具磨损的仿真研究[J]. 机械设计与制造, 2014(2):193-195. ZHU H X, SHEN X Q, ZHANG L X. The simulation of temperature field and tool wear in the near-dry deep hole drilling[J]. Machinery Design & Manufacture, 2014(2):193-195(in Chinese). |
| [11] | 何春伶. 双顶角钻尖几何参数对碳纤维复合材料钻削轴向力和制孔分层的影响[D]. 大连:大连理工大学, 2016. HE C L. Influence of double point angle drill geometric parameters on thrust force and delamination in drilling CFRP[D]. Dalian:Dalian University of Technology, 2016(in Chinese). |
| [12] | 贾振元, 何春伶, 付饶, 等. 基于CFRP层合板钻削轴向力时变曲线的钻头几何形状分析[J]. 复合材料学报, 2016, 33(12):2757-2765. JIA Z Y, HE C L, FU R, et al. Analysis of drilling bit geometry based on time varying curve of drilling thrust force for CFRP composite laminates[J]. Acta Materiae Compositae Sinica, 2016, 33(12):2757-2765(in Chinese). |
| [13] | 钱宝伟, 刘巍, 贾振元, 等. 双顶角钻头钻削CFRP的刀具磨损机制[J]. 复合材料学报, 2016, 34(4):289-297. QIAN B W, LIU W, JIA Z Y, et al. Wear mechanism of double point angle drill bit in drilling CFRP[J]. Acta Materiae Compositae Sinica, 2016, 34(4):289-297(in Chinese). |
| [14] | JIA Z Y, FU R, NIU B, et al. Novel drill structure for damage reduction in drilling CFRP composites[J]. International Journal of Machine Tools & Manufacture, 2016, 110:55-65. |
| [15] | 蔡建国. 碳纤维增强复合材料钻削温度与孔质量试验研究[D]. 福州:福州大学, 2014. CAI J G. Research on the drilling temperature and hole quality in drilling carbon fiber reinforced composite[D]. Fuzhou:Fuzhou University, 2014(in Chinese). |
| [16] | GAUGEL S, SRIPATHY P, HAEGER A, et al. A comparative study on tool wear and laminate damage in drilling of carbon-fiber reinforced polymers (CFRP)[J]. Composite Structures, 2016, 155:173-183. |
| [17] | 王奔. 切削力和热对C/E复合材料制孔损伤的影响机理[D]. 大连:大连理工大学, 2014WANG B. Influence mechanism of cutting force & heat on hole-making damage of C/E composites[D]. Dalian:Dalian University of Technology, 2014(in Chinese). |
| [18] | ？ELIK A, LAZOGLU I, KARA A. Wear on SiAlON ceramic tools in drilling of aerospace grade CFRP composites[J]. Wear, 2015, 338:11-21. |
| [19] | 张春燕. MQL切削机理及其应用基础研究[D]. 江苏:江苏大学, 2008. ZHANG C Y, Study on the mechanism of MQL cutting and its application fundament[D]. Jiangsu:Jiangsu University, 2008(in Chinese). |
| [20] | SORBO N W, DIONNE J J. Dry drilling of stackup compo-site:Benefits of CO2 cooling[J]. SAE International Journal of Aerospace, 2014, 7(1):156-163. |
| [21] | 陈东芳, 唐大伟, 胡学功. 流量、换热表面方向对光滑表面喷雾冷却的影响[J]. 工程热物理学报, 2010, 31(07):1167-1170. CHEN D F, TANG D W, HU X G. Effect of flow rate and plain surface orientation on spray cooling[J]. Journal of Engineering Thermophysics, 2010, 31(07):1167-1170(in Chinese). |
| [22] | 刘新, 黄帅, 瞿娇娇, 等. 304不锈钢离子化气流辅助切削试验[J]. 农业机械学报, 2014, 45(5):334-339, 346. LIU X, HUANG S, QU J J, et al. Experiment on ionized gas jet assisted cutting of 304 stainless steel[J]. Transactions of the Chinese Society for Agricultural Machinery, 2014, 45(5):334-339, 346(in Chinese). |
| [23] | 魏良耀. 碳纤维复合材料钻削轴向力及刀具磨损的试验研究[D]. 南京:南京理工大学, 2013. WEI L Y. Experimental study on axial force and tool wear of carbon fiber composite drilling[D]. Nanjing:Nanjing University of Science and Technology, 2013(in Chinese). |
| [24] | DIPAOLO G, KAPOOR S G, DEVOR R E. An experimental investigation of the crack growth phenomenon for drilling of fiber-reinforced composite materials[J]. Journal of Engineering for Industry, 1996, 118(1):104-110. |
