In this paper, by using the method of matrix structural analysis, the static stiffness model are derived from researching BKX-I varied-axis NC machine tool.

文章以BKX - I型变轴数控机床为研究对象，利用矩阵结构分析法建立了变轴数控机床的静刚度计算模型。

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To specify it, the stiffness models of the flexible joint by using the displacement matrix method in structural analysis are established firstly.

为探索这类全柔性机构的运动学问题，首先建立起柔性铰链变形刚度模型。

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