International Journal of Materials Science and Applications
Volume 7, Issue 5, September 2018, Pages: 192-198
Received: Dec. 9, 2018;
Published: Dec. 11, 2018
Views 423 Downloads 83
Ying Xu, School of Aircraft Engineering, Nanchang Hangkong University, Nangchang, China
Qianfeng Wan, School of Aircraft Engineering, Nanchang Hangkong University, Nangchang, China
Gang Lu, School of Aircraft Engineering, Nanchang Hangkong University, Nangchang, China
Benshuang Zhang, School of Aircraft Engineering, Nanchang Hangkong University, Nangchang, China
This study discusses the dynamic stiffness of the End-effector of a drilling robot for aircraft. In view of the requirements of automatic drilling processing for aircraft parts, based on the analysis of the working process of the automatic drilling End-effector, the End-effector of drilling unit has been employed in precision machine tools, It can provide very smooth motion and good verticality. In the design of the machines, it is necessary to obtain the stiffness of these guideway. Therefore, an identification method of the guideway stiffness is verified in this paper. In this method, the guideway stiffness is identified from the natural frequency of the moving body. First, a virtual prototype of the End-effector of drilling unit flexible is constructed by jointly using both ANSYS, which provides a foundation for further dynamic characteristic simulations. Next, the impact test is carried out for a drilling tool to obtain the vibration mode of its moving body, and simple vibration model is developed based on the obtained vibration mode to identify the natural frequency of the guideways. For further verification, natural frequencies of the moving body are calculated by FEM with the identified natural frequency and compared with the measured natural frequencies. The results shows that : the natural frequencies were calculated almost correctly with the identified equivalent stiffness, and which provides theoretical reference for improving the drilling efficiency and assembly quality of aircraft components.
Dynamic Characteristics of the End-effector of a Drilling Robot for Aviation, International Journal of Materials Science and Applications.
Vol. 7, No. 5,
2018, pp. 192-198.
T. Zeng, C. Liu, Y. Zhu, L Song. “Key Technology Research and Engineering Application for Large Aircraft Digital Assembly,” Aeronautical Manufacturing Technology, 2016.
M. Wang, W. Chen, M. Lin, H. Jiang, L. Yu, and Y. Wang. “Case study of aircraft fuselage automatic assembly simulation,” in Proceedings IEEE International Conference on Mechanic Automation and Control Engineering (MACE), Wuhan, 2010, pp.272–273.
“VERL S. Correlation between feed velocity and preloading in ball screw drives,” CIRP Annals-Manufacturing Technology, vol. 59(1), 2010, pp.429—432.
M. YANG, L. GUI, Y. F. HU, G. P. DING, C. S. SONG. “Dynamic analysis and vibration testing of CFRP drive-line system used in heavy-duty machine tool,” Results in Physics, vol. 8, 2018, pp.1110-1118.
J. MI, Z. ZHEN, Y. P. ZHU. “Research on Dynamic Characteristics of Machine Tools Based on High Acceleration Processing,” Journal of Mechanical Strength, vol. 40(04), 2018, pp.987-991.
Igor Ansoategui, Francisco J. Campa, “Mechatronics of a ball screw drive using an N degrees of freedom dynamic model,” The International Journal of Advanced Manufacturing Technology, Vol.93, 2017, pp.1307-1318.
X. H. WU, Z. R. ZHU. “Research on identification of model parameters for machine tools,” Machinery, vol.45(8), 2007, pp.64-66.
D. XU, Q. LIU. “Dynamic co-simulation of NC machine tool based on machine joints modeling,” Machinery Design & Manufacture, vol.3, 2008, pp.9-11.
K. M. MAO, M. X. XING, B. LI. “Dynamic modeling of the movable joint on rolling linear guide,” Journal of Huazhong University of Science and Technology, vol.44(07), 2016, pp.81-85.
D. XU, Q. LIU, S. YUAN. “Research on static stiffness of roller guideway,” Machine Tool & Hydraulics, vol.36(4), 2008, pp.8-10.
D. S. ZHOU, S. L. GUO, Y. L. WANG. “Measurement and analysis of dynamic characteristics of machine tool guideway” Coal Mine Machinery, vol. 38(01), 2017, pp.46-48.
Z. Y. GUO. “Based on Finite Element of Static and Dynamic Performance Analysis of the Whole Machine and Structural Optimization Design,” Shenyang University of Technology, 2018.