Affiliations: Jiangsu Key Laboratory of Precision and
Micro-Manufacturing Technology, Nanjing University of Aeronautics and
Astronautics, Nanjing, P.R. China | Technology Center of Wuxi Qiaolian CNC Machine Tool
Co., Ltd. Wuxi Jiangsu, P.R. China
Note: [] Corresponding author: Dr. Shihao Liu, Jiangsu Key Laboratory of
Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics
and Astronautics, Nanjing 210016, P.R. China. Tel.: +86 25 84892558; Fax: +86
25 84893351; E-mail: [email protected]
Abstract: In order to improve the machining accuracy of a gantry machining
center, structural bionic design for column was conducted. Firstly, the bionic
design method for stiffener plate structure was established based on
distribution principles of gingko root system. The bionic design method was
used to improve column structure of the gantry machining center, and three
kinds of bionic columns were put forward. The finite element analysis on
original and bionic columns indicates that the mass of the column with the best
bionic stiffener plate structure is reduced by 2.74% and the first five order
natural frequencies are increased by 6.62% on average. The correctness of
column's bionic design method proposed in this paper was verified by the static
and dynamic experiments. Finally, the bionic principles for stiffener plate of
column were concluded, which provides a new idea for updating traditional
design concepts and achieving lightweight structure of machine tool components.
Keywords: Bionic design, root system, gantry machining center, column, finite element analysis, static and dynamic performance
