Modelling thermomechanical behaviour of multi-axis machine tools

被引:28
|
作者
Delbressine, FLM [1 ]
Florussen, GHJ [1 ]
Schijvenaars, LA [1 ]
Schellekens, PHJ [1 ]
机构
[1] Eindhoven Univ Technol, Dept Mech Engn, NL-5600 MB Eindhoven, Netherlands
关键词
thermal error compensation; telescopic double ball bar; machine tools; extended lumped capacitance method;
D O I
10.1016/j.precisioneng.2005.05.005
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper describes a method to measure and model the thermally induced positioning errors of multi-axis machines. These errors result from changes in temperature distribution of such a machine. To achieve a reduction of the machine's tool positioning errors a generally applicable model has been developed. First the temperature distribution of a machine tool is computed from a limited number of sensors. Using this calculated temperature distribution and a deformation model based on the machine's structural loop and rigid body kinematics the tool positioning error is computed. To validate the developed thermomechanical model a new measuring method based on three-dimensional length measurements has been used. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:47 / 53
页数:7
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