TY - JOUR
T1 - Stiffness matching design for feed system of high-speed machine tool considering modal characteristics
AU - Liu, Haitao
AU - Wang, Lei
AU - Zhao, Wanhua
PY - 2014/1
Y1 - 2014/1
N2 - To obtain the optimum dynamic characteristics of feed system, a dynamic model of the system is set up with finite element method to carry out the matching design of components and joint interfaces for high-speed machine tool. Analyzing the vibrating mode of the feed system, the changing rule of system mode parameters due to various factors is revealed. The optimization of the inner table structure is taken as an example to illustrate the matching design. When the system vibrates in feeding direction, the important affecting factors are table mass, screw-nut joint stiffness, bearing stiffness and screw stiffness itself, but when the system vibrates in direction normal to the table, the guideway joint interface stiffness dominates. Investigating the changing modes in different corporations of guideway spans and slides, the optimum result is found: the slide span of 400 mm and guideway span of 300 mm. The table mass can be reduced by 10% and the first-order frequency of the system increased by 9%.
AB - To obtain the optimum dynamic characteristics of feed system, a dynamic model of the system is set up with finite element method to carry out the matching design of components and joint interfaces for high-speed machine tool. Analyzing the vibrating mode of the feed system, the changing rule of system mode parameters due to various factors is revealed. The optimization of the inner table structure is taken as an example to illustrate the matching design. When the system vibrates in feeding direction, the important affecting factors are table mass, screw-nut joint stiffness, bearing stiffness and screw stiffness itself, but when the system vibrates in direction normal to the table, the guideway joint interface stiffness dominates. Investigating the changing modes in different corporations of guideway spans and slides, the optimum result is found: the slide span of 400 mm and guideway span of 300 mm. The table mass can be reduced by 10% and the first-order frequency of the system increased by 9%.
KW - Feed system
KW - High-speed machine tool
KW - Matching design
KW - Modal characteristics
UR - https://www.scopus.com/pages/publications/84892917652
U2 - 10.7652/xjtuxb201401015
DO - 10.7652/xjtuxb201401015
M3 - 文章
AN - SCOPUS:84892917652
SN - 0253-987X
VL - 48
SP - 90
EP - 95
JO - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
JF - Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
IS - 1
ER -