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基于模态分析的高精密夹具优化设计

Machine Tool & Hydraulics(2012)

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Abstract
针对发动机G415缸体需精密铣削顶面以及面上面相关孔加工,设计高精密专用夹具。为使高精密夹具系统具有良好的抗振性能,建立夹具工件系统的三维模型,并用ANSYS Workbench对设计的夹具进行模态分析。为防止切削加工中产生切削震颤,分析出影响夹具模态的关键结构,并对其进行改进。改进后夹具的固有频率跳过了机床临界加工频率,避免了共振的产生,为高精密夹具设计制造和机床加工质量的提高提供了理论依据。
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Key words
Modal analysis,High-precision fixture,Anti-vibration performance
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