This paper researches on the reliability evaluation of stat - IC stiffness of spindle system of machine tool.
本文利用可靠性理论对机床主轴系统静刚度进行了可靠性计算。
For a high speed motorized spindle, the interference fit between the shaft and bearing has a great influence on the stiffness, rotary accuracy and life of the spindle.
高速电主轴轴承与转轴配合的过盈量大小对主轴的刚度、旋转精度和使用寿命具有十分重要的影响。
The load, radial stiffness, axial stiffness and angular stiffness of precision spindle were formulated.
推导出精密主轴承载、向刚度、向刚度和角刚度的计算公式。
Since the parts' stiffness and precision of the spindle units are quit high, and the loads are usually not heavy, so the machining error caused by the cutting force is small.
在高速切削机床中，由于主轴单元系统各零件刚度和精度都较高，而负荷却不是很大，主轴因切削力引起的加工误差较小。
A stiffness calculation method for stepped spindle is presented by combining the approach of initial parameter with the optimization method.
将初参数法与优化方法相结合，提出了阶梯主轴部件刚度的计算方法。
The first order critical speed and static stiffness of the spindle increases greatly after optimization.
经优选设计后，电主轴的一阶临界转速和主轴端静刚度均有较大幅度的提高。
Therefore, the stiffness performance of spindle unit is deeply studied, which has an important significance of improving the working performance of machining center.
因此，深入研究主轴部件的刚度特性，对于进一步提高加工中心的工作性能有十分重要的意义。
In case the form of dynamic cutting force is varied, the optimal region of the stiffness spindle orientation is always different.
动态切削力的构成不同，工艺系统刚度主轴的最佳方位也不同。
The calculated results of rolling bearing stiffness indicate that larger preloading and constant pressure preloading for the rolling bearings of the spindle can improve the stiffness of main spindle.
另外，计算分析了滚动轴承的刚度，认为一定预紧力与定压预紧方式有益于提高主轴刚度。
It's difficult to improve the precision of the spindle static stiffness test.
如何提高测试精度是主轴静刚度测试中的难点。
This paper also studies inverse analysis method of response problem, and identifies stiffness of bearings of lathe spindle.
本文对响应问题逆分析方法进行了研究，并进行了机床主轴轴承刚度识别。
Spindle static stiffness unloading is more than that of loading. The elastic deformation of spindle system resumes stagnantly when unloading. So the loading curve and unloading curve are not closed.
主轴静刚度在卸载时要大于加载时，卸载时主轴系统弹性恢复迟滞，并且加载曲线与卸载曲线不封闭，卸载时主轴变形恢复不到起点，进而影响加工精度。
The effect of the detuning of the stiffness of drilling spindle on the frequency of double spindle drilling machine is discussed by using Perturbation theory of nearly equal frequencies.
运用近频摄动理论分析了双轴钻床钻轴刚度失谐后对钻轴系统固有振动频率的影响。
The stiffness performance is the main factor of affecting the working performance of spindle unit and working accuracy.
影响主轴部件工作性能的主要因素是它的刚度特性。
The stiffness performance is the main factor of affecting the working performance of spindle unit and working accuracy.
影响主轴部件工作性能的主要因素是它的刚度特性。
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