主軸共軛熱傳與熱變形分析

Conjugate Heat Transfer and Thermal deformation Analysis of High Speed Spindle

林家駿(Chia-Chun Lin)

指導教授 ： 劉德騏

國立中正大學/工學院/機械工程學系/碩士(2014年)

摘要

本論文的目的為發展一套應用於高速主軸熱抑制的研究方法，並達到減少熱變形、加工高精度的目標。首先分析一主軸系統內的發熱源(馬達、軸承等)、熱傳模型，並建立起其理論模型。接著以紊流模型Spalart-Allmaras為流體傳輸模型，利用有限元素法進行主軸共軛熱傳分析。分析內容包含直線型以及螺旋形水道，並與文獻中螺旋型水道的實驗溫度值驗證。最後利用得到的溫度場進一步計算主軸系統整體熱變形分佈。數值模擬結果顯示接近水道出口區、固體區的穩態溫度與實驗值有著良好驗證，可做為未來預測主軸整體溫度的運算方法。

關鍵字:高速主軸、熱抑制、有限元素法、共軛熱傳分析、熱變形

關鍵字

共軛熱傳分析 ； 有限元素法 ； 熱抑制 ； 高速主軸 ； 熱變形

並列摘要

The study develops a research method applied for the thermal inhibition on high speed spindle to achieve the goal of diminishing the thermal deformation and improving the precision during the manufacturing process. Firstly, we establish the heat transfer model of high speed spindle, such as the heat source formula and fluid theory model. Next, we apply finite element method to conduct a conjugate heat transfer analysis based on Spalart-Allmaras turbulence model. The content of analysis includes the two types of water channel, axial and helical water channel. Moreover, the numerical result of temperature of helical water channel was compared with the experimental data. Subsequently, we use the previous temperature result as the initial condition so that distribution of thermal deformation could be calculated. The result of numerical simulation near the outlet of water channel and solid indicates a good agreement with the experimental data, including the temperature at steady state. The method is reliable and could predict the temperature distribution of high speed spindle in the future.

Key Words: High speed spindle, Thermal inhibition, Finite element method, Conjugate heat transfer, Thermal deformation.

並列關鍵字

Conjugate heat transfer ； Finite element method ； Thermal inhibition ； High speed spindle ； Thermal deformation

參考文獻

[1] B. Bossmanns, J.F. Tu, 1999, “A Thermal Model for High Speed Motorized Spindles”, International Journal of Machine Tools &Manufacture, Vol.39, pp. 1345-1366.

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[5] C.H. Chien, J.Y. Jang, 2009, “3-D numerical and Experimental Analysis of a Built-in Motorized High-speed Spindle with Helical Water Cooling Channel”, Applied Thermal Engineering, Vol.28, pp. 2327-2336.

[8] X. Shuhong, G. Jun, Z. Bolin, 2006, “Research on the Motorized Spindle’s Thermal Properties based on Thermo-Mechanical Coupling Analysis”, International Technology and Innovation Conference, pp. 1479-1483.

[9] X. Deng, J. Fu, Y. He, Z. Chen, F. Lin, 2011, “Thermal-structure Characteristics Coupling Analysis of Spindle System for Horizontal CNC Machining Center”, International Journal Of Precision Engineering and Manufacturing, Vol.10 , pp. 1-6.