CAJ | 학술논문

为了提高所设计的超精密光学磨床精度和提高温度场分析的准确性，利用有限元分析软件ANSYS和热力学理论，分析了超精密光学磨床主轴的温度场分布。首先，建立自由电子气模型，计算出自主设计的超精密光学磨床主轴材料的热导率；进而研究分析不同结构、不同环境下机床主轴的温升规律；最后，提出了基于热力学分析结果的一系列主轴结构优化方法，采取对主轴和点接触件进行优化设计，减小热源与主轴之间的接触面积等方法，减小机床主轴的热变形，从而提高超精密光学磨床的精度。
위료제고소설계적초정밀광학마상정도화제고온도장분석적준학성，이용유한원분석연건ANSYS화열역학이론，분석료초정밀광학마상주축적온도장분포。수선，건립자유전자기모형，계산출자주설계적초정밀광학마상주축재료적열도솔；진이연구분석불동결구、불동배경하궤상주축적온승규률；최후，제출료기우열역학분석결과적일계렬주축결구우화방법，채취대주축화점접촉건진행우화설계，감소열원여주축지간적접촉면적등방법，감소궤상주축적열변형，종이제고초정밀광학마상적정도。
In order to ensure the accuracy of temperature field distribution analysis and improve the machine precision ,a thermal conductivity anal-ysis model based on thermodynamic theory and fi-nite element analysis is presented .Firstly ,free e-lectron gas model and Debye model are applied to calculate the thermal conductivity of main materi-als of ultra precision optical machine spindle . T hen the temperature rise law of the spindle under different structures and situations is analyzed ,a structure optimization method of ultra precision optical machine spindle is finally presented by re-ducing the contact area between the heat source and spindle ,optimizing the connections between spindle and point contact components .As a re-sult ,the thermal deformation is reduced and the machine accuracy is improved .