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工具机主轴对流系数和热产生
19
Journal of Technology, Vol. 31, No. 1, pp. 19-25 (2016)
*
CAE
CAE
CONVECTION COEFFICIENT AND HEAT GENERATION OF SPINDLE
IN MACHINE TOOLS
Bor-Hsing Wu Shun-Ren Juang Yu-Hsing Ho Huan-Chao Chiu* Chung-Yu Hsieh
Department of Mechanical Engineering
National Chin-Yi University of Technology
Taichung, Taiwan 41170, R.O.C.
Key Words: machine tools, spindle, thermal analysis, convection
coefficient, CAE.
ABSTRACT
This study was aimed at evaluating the heat generation of a spindle to
predict thermal deformation of machine tools during operation. Firstly,
empirical measurements were performed to determine temperature rises of
a spindle under different loadings levels and rotating speeds, for insulated,
natural convection, and forced convection conditions. For the insulated
condition the spindle was wrapped in a thermal insulating material to
ensure a lowest average convection coef
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