工具机主轴对流系和热产生.PDF

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2017-09-12 发布于江苏
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工具机主轴对流系和热产生.PDF

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工具机主轴对流系和热产生

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