大连理工大学学报Issue(3)：364-369,6.
G 型结构立式镗铣机床位置刚度数值模拟与试验
Experiment and simulation of position stiffness of a G-type frame structure vertical machine center
摘要
Abstract
The position static stiffness variation of G-type frame structure vertical machine center on work space volume is studied .Based on the feature of joints ,the spindle bearings ,linear slide-ways and guide screw are equivalent to the springs . The static stiffness prediction model of complete machine is built .The X ,Y and Z sensitive direction position stiffnesses of column ,table and vertical machine center are calculated using the finite element method . Meanwhile , the static stiffness of vertical machine center is verified by discrete point experiment . Results show that the maximum relative error of simulation and experiment is 8 .7% , the X , Y and Z sensitive direction static stiffnesses of spindle nonlinearly decrease in Z travel .The static stiffness of table in X ,Y plane is a parabolic shape ,the maximum is in the center ,the minimum is in the border .The variation of static stiffness of the complete machine is similar to the table .The data of simulation provide a theory basis for the design of G-type frame structure vertical machine center and position error compensation .关键词
工作空间/位置刚度/静刚度试验Key words
work space/position stiffness/static stiffness test分类
矿业与冶金引用本文复制引用
孙永平,王德伦,马雅丽,董惠敏..G 型结构立式镗铣机床位置刚度数值模拟与试验[J].大连理工大学学报,2013,(3):364-369,6.基金项目
“十一五”国家科技支撑计划资助项目（2011BAF11B03）；国家科技重大专项资助项目（2012ZX04010-011）． （）
