Hybrid modelling for thermal deformation prediction of high speed motorized spindle

3rd China-Romania Science and Technology Seminar

自然科学;工业技术

Fan, L.T.^1,2 ; Jing, X.R.^1 ; Zhang, L.X.^1,2 ; Li, D.^1,2

School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang

110168, China^1

Natl.-Loc. Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone, Shenyang Jianzhu University, Shenyang

110168, China^2

关键词: Comsol multiphysics;    High speed motorized spindle;    Hybrid modelling;    Machining Accuracy;    NC machine tools;    Numerical solution;    Thermal deformation;    Thermal deformation compensation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/399/1/012017/pdf
DOI  :  10.1088/1757-899X/399/1/012017

来源: IOP

【 摘 要 】

Thermal-induced deformation accounts for 40-70% of the total dimensional and shape errors that arise from various sources of machine tools. This paper suggests a hybrid model based on regression-based analysis and computation-based simulation to predict the thermal deformation of high speed motorized spindle. COMSOL Multiphysics was used to obtain the numerical solutions of the thermal deformation, and the PLS algorithm was used to modify the error between the simulation model and the experimental data collected from the spindle test system. The experimental results showed that the proposed hybrid model could predict thermal deformation effectively and accurately, and it can be used for real-time thermal deformation compensation to improve the machining accuracy of NC machine tool.