Title :
An improved model of motorized spindle for transient thermo-structural analysis
Author :
Mengxi Wang ; Jun Hong ; Wenwu Wu ; Jianguo Yao
Author_Institution :
State Key Lab. for Manuf. Syst. Eng., Xi´an Jiaotong Univ., Xi´an, China
fDate :
July 30 2013-Aug. 2 2013
Abstract :
The prediction of the temperature distribution and thermal deformation for motorized spindle dependent on time is critical in its design process .The thermo-structural model of a grinding motorized spindle is developed with accurate thermal boundary conditions of the spindle-bearing system based on experimental data and numerical calculation. The following thermal boundary conditions are improved: the heat transfer coefficient of natural convection between spindle surface and ambient air through heat flux measurement, the heat transfer coefficient of forced convection of cooling water by the simulation analysis. In addition, a method of heat distribution applied to the bearing model is proposed. The thermo-structural model with structural deformation constraints is validated experimentally based on the transient temperature of typical regions, the axial thermal deformation of the shaft and the thermal equilibrium time.
Keywords :
boundary layers; heat transfer; machine bearings; machine tool spindles; process design; shafts; temperature distribution; thermal analysis; transients; axial thermal deformation; design process; heat distribution; heat flux measurement; heat transfer coefficient; motorized spindle; shaft; simulation analysis; spindle-bearing system; temperature distribution; thermal boundary; thermo-structural model; transient thermo-structural analysis; Batteries; Navigation; Robots; Solid modeling; Speech; Speech enhancement; Speech recognition; Motorized spindle; Thermo-structural analysis; Transient; heat transfer coefficient;
Conference_Titel :
Assembly and Manufacturing (ISAM), 2013 IEEE International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4799-1656-6
DOI :
10.1109/ISAM.2013.6643497
