1. Key Laboratory of Pressure Systems and Safety (Ministry of Education), East China University of Science and Technology, Shanghai 200237, China 2. AECC Commercial Aircraft Engine Co., Ltd., Shanghai Engineering Research Center for Commercial Aircraft Engine, Shanghai 201108, China
As crucial parts of an aeroengine, blades are vulnerable to damage from long-term operation in harsh environments. The ultrasonic surface rolling process (USRP) is a novel surface treatment technique that can highly improve the mechanical behavior of blades. During secondary machining, the nominal blade model cannot be used for secondary machining path generation due to the deviation between the actual and nominal blades. The clamping error of the blade also affects the precision of secondary machining. This study presents a two-sided USRP (TS-USRP) machining for aeroengine blades on the basis of on-machine noncontact measurement. First, a TS-USRP machining system for blade is developed. Second, a 3D scanning system is used to obtain the point cloud of the blade, and a series of point cloud processing steps is performed. A local point cloud automatic extraction algorithm is introduced to extract the point cloud of the strengthened region of the blade. Then, the tool path is designed on the basis of the extracted point cloud. Finally, an experiment is conducted on an actual blade, with results showing that the proposed method is effective and efficient.
O Yilmaz, N Gindy, J. GaoA repair and overhaul methodology for aeroengine components. Robotics and Computer-Integrated Manufacturing, 2010, 26(2): 190–201 https://doi.org/10.1016/j.rcim.2009.07.001
2
Q. HongchaoExperimental investigation of laser peening on Ti17 titanium alloy for rotor blade applications. Applied Surface Science, 2015, 351: 524–530 https://doi.org/10.1016/j.apsusc.2015.05.098
3
P Li, S Huang, H Xu, et al.Numerical simulation and experiments of titanium alloy engine blades based on laser shock processing. Aerospace Science and Technology, 2015, 40(7): 164–170 https://doi.org/10.1016/j.ast.2014.10.017
4
J Yao, Q Zhang, F Kong, et al.Laser hardening techniques on steam turbine blade and application. Physics Procedia, 2010, 5: 399–406 https://doi.org/10.1016/j.phpro.2010.08.161
5
I Altenberger, R K Nalla, Y Sano, et al.On the effect of deep-rolling and laser-peening on the stress-controlled low- and high-cycle fatigue behavior of Ti–6Al–4V at elevated temperatures up to 550 ℃. International Journal of Fatigue, 2012, 44: 292–302 https://doi.org/10.1016/j.ijfatigue.2012.03.008
6
G Xu, K Y Luo, F Z Dai, et al.Effects of scanning path and overlapping rate on residual stress of 316L stainless steel blade subjected to massive laser shock peening treatment with square spots. Applied Surface Science, 2019, 481: 1053–1063 https://doi.org/10.1016/j.apsusc.2019.03.093
7
Y K Zhang, J Z Lu, X D Ren, et al.Effect of laser shock processing on the mechanical properties and fatigue lives of the turbojet engine blades manufactured by LY2 aluminum alloy. Materials & Design, 2009, 30(5): 1697–1703 https://doi.org/10.1016/j.matdes.2008.07.017
M Benedetti, V Fontanari, B Winiarski, et al.Residual stresses reconstruction in shot peened specimens containing sharp and blunt notches by experimental measurements and finite element analysis. International Journal of Fatigue, 2016, 87: 102–111 https://doi.org/10.1016/j.ijfatigue.2016.01.020
10
C S Montross, T Wei, L Ye, et al.. Laser shock processing and its effects on microstructure and properties of metal alloys: A review. International Journal of Fatigue, 2002, 24(10): 1021–1036 https://doi.org/10.1016/S0142-1123(02)00022-1
11
W Guo, R Sun, B Song, et al.Laser shock peening of laser additive manufactured Ti6Al4V titanium alloy. Surface and Coatings Technology, 2018, 349: 503–510 https://doi.org/10.1016/j.surfcoat.2018.06.020
12
Y Fang, Y Li, W He, et al.Numerical simulation of residual stresses fields of DD6 blade during laser shock processing. Materials & Design, 2013, 43: 170–176 https://doi.org/10.1016/j.matdes.2012.06.052
13
N Kalentics, E Boillat, P Peyre, et al.3D Laser Shock Peening–A new method for the 3D control of residual stresses in Selective Laser Melting. Materials & Design, 2017, 130: 350–356 https://doi.org/10.1016/j.matdes.2017.05.083
14
T Wang, D Wang, G Liu, et al.Investigations on the nanocrystallization of 40Cr using ultrasonic surface rolling processing. Applied Surface Science, 2008, 255(5): 1824–1829 https://doi.org/10.1016/j.apsusc.2008.06.034
15
Y Liu, X Zhao, D. WangDetermination of the plastic properties of materials treated by ultrasonic surface rolling process through instrumented indentation. Materials Science and Engineering A, 2014, 600: 21–31 https://doi.org/10.1016/j.msea.2014.01.096
16
C Zhen, Z Xiancheng, T U. ShantongEffects of ultrasonic surface rolling process on microstructure and surface integrity of Ti–6Al–4V alloy. Materials for Mechanical Engineering, 2018, 42(1): 7–10 (in Chinese)
17
M Kattoura, S R Mannava, D Qian, et al.Effect of ultrasonic nanocrystal surface modification on elevated temperature residual stress, microstructure, and fatigue behavior of ATI 718Plus alloy. International Journal of Fatigue, 2018, 110: 186–196 https://doi.org/10.1016/j.ijfatigue.2018.01.017
18
D Song, F Xue, D Wu, et al.Iso-parametric path-planning method of twin-tool milling for turbine blades. International Journal of Advanced Manufacturing Technology, 2018, 98(9-12): 3179–3189 https://doi.org/10.1007/s00170-018-2461-4
19
D Li, L Zhang, X Yang, et al.. Research on the double-sided grinding and polishing machine tool system. In: Proceedings of 2010 IEEE International Conference on Information and Automation. Anchorage: IEEE, 2010, 1968–1971
20
L Zhang, H R Yang, Z J Zhang, et al.. Modal analysis for a new double-side blade grinding machine. In: Proceedings of Applied Mechanics and Materials. Switzerland: Trans Tech Publications, 2012, 159: 156–159
G Z Sakhvadze, M S Pugachev, O G. KikvidzeTwo-sided laser shock processing. Russian Engineering Research, 2017, 37(1): 40–45 https://doi.org/10.3103/S1068798X17010191
23
Y Zhang, Z Chen, T. NingReverse modeling strategy of aero-engine blade based on design intent. International Journal of Advanced Manufacturing Technology, 2015, 81(9-12): 1781–1796 https://doi.org/10.1007/s00170-015-7232-x
24
B Sun, B. LiLaser displacement sensor in the application of aero-engine blade measurement. IEEE Sensors Journal, 2016, 16(5): 1377–1384 https://doi.org/10.1109/JSEN.2015.2497363
25
G Xiao, Y Huang, Y. FeiOn-machine contact measurement for the main-push propeller blade with belt grinding. International Journal of Advanced Manufacturing Technology, 2016, 87(5-8): 1713–1723 https://doi.org/10.1007/s00170-016-8590-8
26
N Huang, Q Bi, Y Wang, et al.5-Axis adaptive flank milling of flexible thin-walled parts based on the on-machine measurement. International Journal of Machine Tools and Manufacture, 2014, 84: 1–8 https://doi.org/10.1016/j.ijmachtools.2014.04.004
F Li, C Hitchens, D. StoddartA performance evaluation method to compare the multi-view point cloud data registration based on ICP algorithm and reference marker. Journal of Modern Optics, 2018, 65(1): 30–37 https://doi.org/10.1080/09500340.2017.1375566
29
L X Lu, J Sun, L Li, et al.Study on surface characteristics of 7050-T7451 aluminum alloy by ultrasonic surface rolling process. International Journal of Advanced Manufacturing Technology, 2016, 87(9–12): 2533–2539 https://doi.org/10.1007/s00170-016-8659-4
30
M Cheng, D Zhang, H Chen, et al.Surface nanocrystallization and its effect on fatigue performance of high-strength materials treated by ultrasonic rolling process. International Journal of Advanced Manufacturing Technology, 2016, 83(1-4): 123–131 https://doi.org/10.1007/s00170-015-7485-4
J Wang, M M Oliveira. Filling holes on locally smooth surfaces reconstructed from point clouds. Image and Vision Computing, 2007, 25(1): 103–113 https://doi.org/10.1016/j.imavis.2005.12.006