| Citation: | LI Zhe, ZHANG Deyuan, JIANG Xingganget al. Exit burr in rotary ultrasonic-assisted drilling of titanium alloys[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(7): 1380-1386. doi: 10.13700/j.bh.1001-5965.2016.0556(in Chinese)
|
In aerospace industries, to solve the problem of big exit burr which leads to the difficulty in deburring operations and poor assembly quality of fastener after the traditional drilling process of the difficult-to-cut materials like titanium alloys using a twist drill, the rotary ultrasonic-assisted drilling (RUAD) technology of titanium alloys based on a novel tool (i.e., 8-facet drill) was proposed. The principles of RUAD process and motion trajectory of tool cutter tooth in RUAD were analyzed. And then, the drilling experiments were performed with a designed RUAD spindle unit, CA6140 lathe, measurement system of thrust force, measurement system of cutting temperature, high-speed video camera system and non-contact laser measurement system, and the type and size of exit burr were studied. In contrast to the common drilling (CD) of titanium alloys, the mechanisms of small or low burr height generated in RUAD were discussed and analyzed, and the theory models of burr formation mechanisms in CD and RUAD were obtained based on the high-speed camera images of burr formation and principle analysis of RUAD. The experimental results indicate that compared with CD, in RUAD process, the thrust force, maximum cutting temperature near the drilled hole exit and burr height of hole exit decrease by 16.79%-20.2%, 18.54%-21.68% and 82.27%-89.18% respectively, which greatly reduces the troubles and manufacturing costs of deburring operations and improves the production process.
| [1] |
HINCHCLIFFE M.Characterisation of bond line porosity[D]. Sydeny:University of New South Wales, 2008:1-2.
|
| [2] |
BREWER W D, BIRD R K, WALLACE T A.Titanium alloys and processing for high speed aircraft[J]. Materials Science and Engineering A—Structural Materials Properties Microstructure and Processing, 1998, 243(1):299-304.
|
| [3] |
EZUGWU E O, WANG Z M.Titanium alloys and their machinability—A review[J]. Journal of Materials Processing Technology, 1997, 68(3):262-274. doi: 10.1016/S0924-0136(96)00030-1
|
| [4] |
MACHADO A R, WALLBANK J.Machining of titanium and its alloy—A review[J]. Proceedings of the Institution of Mechanical Engineers, Part B:Journal of Engineering Manufacture, 1990, 204(1):53-60. doi: 10.1243/PIME_PROC_1990_204_047_02
|
| [5] |
YANG X, LIU R.Machining titanium and its alloy[J]. Machining Science and Technology, 1999, 3(1):107-139. doi: 10.1080/10940349908945686
|
| [6] |
SCHROEDER P T.Widening interest in twist drill[J]. Modern Machine Shop, 1998, 71(6):106-113.
|
| [7] |
DORNFELD D A, KIM J S, DECHOW H, et al.Drilling burr formation in titanium alloy, Ti-6Al-4V[J]. CIRP Annals-Manufacturing Technology, 1999, 48(1):73-76. doi: 10.1016/S0007-8506(07)63134-5
|
| [8] |
SANGKEE M, DAVID A D, JINSOO K, et al.Finite element modeling of burr formation in metal cutting[J]. Machining Science and Technology, 2001, 5(3):307-322. doi: 10.1081/MST-100108617
|
| [9] |
CANTERO J L, TARDIO M M, CANTELIA J A, et al.Dry drilling of alloy Ti-6Al-4V[J]. International Journal of Machine Tools and Manufacture, 2005, 45(11):1246-1255. doi: 10.1016/j.ijmachtools.2005.01.010
|
| [10] |
AURICH J C, DORNFELD D, ARRAZOLA P J, et al.Burrs—Analysis, control and removal[J]. CIRP Annals-Manufacturing Technology, 2009, 58(2):519-542. doi: 10.1016/j.cirp.2009.09.004
|
| [11] |
CAMPBELL F C.Manufacturing technology for aerospace structural materials[M]. Chicago:Navy & the Boeing Company, 2011:515-528.
|
| [12] |
ABDELHAFEEZ A M, SOO S L, ASPINWALL D K, et al.Burr formation and hole quality when drilling titanium and aluminium alloys[J]. Procedia CIRP, 2015, 37:230-235. doi: 10.1016/j.procir.2015.08.019
|
| [13] |
ZHANG D Y, FENG X J, WANG L J, et al.Study on the drill skidding motion in ultrasonic vibration microdrilling[J]. International Journal of Machine Tools and Manufacture, 1994, 34(6):847-857. doi: 10.1016/0890-6955(94)90064-7
|
| [14] |
ZHANG D Y, WANG L J.Investigation of chip in vibration drilling[J]. International Journal of Machine Tools and Manufacture, 1998, 38(3):165-176. doi: 10.1016/S0890-6955(97)00047-3
|
| [15] |
AZARHOUSHANG B, AKBARI J.Ultrasonic-assisted drilling of Inconel 738-LC[J]. International Journal of Machine Tools and Manufacture, 2007, 47(7-8):1027-1033. doi: 10.1016/j.ijmachtools.2006.10.007
|
| [16] |
LIAO Y S, CHEN Y C, LIN H M.Feasibility study of the ultrasonic vibration assisted drilling of Inconel superalloy[J]. International Journal of Machine Tools and Manufacture, 2007, 47(12-13):1988-1996. doi: 10.1016/j.ijmachtools.2007.02.001
|
| [17] |
PUJANA J, RIVERO A, CELAYA A.Analysis of ultrasonic-assisted drilling of Ti6Al4V[J]. International Journal of Machine Tools and Manufacture, 2009, 49(6):500-508. doi: 10.1016/j.ijmachtools.2008.12.014
|
| [18] |
LI X, ZHANG D Y.Ultrasonic elliptical vibration transducer driven by single actuator and its application in precision cutting[J]. Journal of Materials Processing Technology, 2006, 180(1-3):91-95. doi: 10.1016/j.jmatprotec.2006.05.007
|
| [19] |
ZHOU M, HU L H.Development of an innovative device for ultrasonic elliptical vibration cutting[J]. Ultrasonics, 2015, 60:76-81. doi: 10.1016/j.ultras.2015.02.015
|
Figures(10) / Tables(3)
Copyright © Journal of Beijing University of Aeronautics and Astronautics
Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn
Supported by:
Beijing Renhe Information Technology Co., Ltd.
DownLoad:
