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对数控机床主轴单元中轴向定位元件过盈套进行了结构尺寸设计。用概率分析方法分析各种加工误差对配合紧固性的影响，并做了实验验证。探讨了在保证使用性能前提下，如何制定适用于我国数控机床主轴单元用的系列标准。
On the CNC machine tool spindle unit positioning components in the axial interference structure design. Probability analysis method is used to analyze the influence of various machining errors on the fit and tightening, and experimental verification is made. This paper discusses how to make a series of standards for the spindle unit of CNC machine tools in China under the premise of ensuring the performance.