该方法以降低主轴前端动柔度值为优化目标，优化后的主轴结构可以提高机床的切削稳定性。

The method aims at decreasing the dynamic flexibility of the spindle header as well as improving the stability of the cutting process resulting from the optimized structure of the machine tools.

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计算结果显示，设计的高速电主轴单元主轴轴承、主轴前端温升理想，工作端轴向热位移很小。

The results indicate that temperature rises of the designed high-speed spindle bearings and the front of the spindle are very ideal and the thermal displacement of the front is very small.

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减速机轴(1)前端与主轴(3)的末端均采用多边形结构构成，并且与凹槽(5)及凹槽(6)的内部构造相同。

The front end of the speed reduction crankshaft (1) and the tail end of the main shaft (3) are made by adopting the polygon structure and are same as the inner structures of the grooves (5) and (6).

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