The effects of spindle vibration on surface generation in ultra-precision raster milling
The effects of spindle vibration on surface generation in ultra-precision raster milling
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DOI：
10.1016/j.ijmachtools.2013.04.005
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发表时间：
2013-08
影响因子：
14
通讯作者：
S. Zhang;S. To
中科院分区：
文献类型：
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作者：
S. Zhang;S. To
主轴振动对超精密加工零件的表面质量有重要影响。然而，在超精密光栅铣削（UPRM）中，在间歇切削力激励下的特殊主轴振动的研究相对较少。在这项研究中，一个专门的模型下的脉冲激励下的空气静压轴承主轴UPRM的间歇切削力的发展和推导的数学解揭示主轴振动是脉冲响应。理论和实验结果表明，主轴的脉冲振动会在UPRM表面产生不均匀的凹坑，形成带状条纹图案和跳动等不规则图案。UPRM的潜在效益是通过主轴转速的优化选择来优化和预测表面形成的理论支持。
Spindle vibration has a significant influence on surface quality of ultra-precision-machined components. However, relatively few studies on the particular spindle vibration under the excitation of intermittent cutting forces in ultra-precision raster milling (UPRM) have been reported. In this study, a specialized model for an aerostatic bearing spindle under the impulsive excitation from intermittent cutting forces of UPRM is developed and its derived mathematical solutions reveal that the spindle vibration is impulsive response. The theoretical and experimental results signify that the impulsive spindle vibration produces inhomogeneous scallops forming ribbon-stripe patterns and irregular patterns like run-out on a surface of UPRM. The potential benefits for UPRM are the theoretical supports for optimization and prediction of surface generation through the optimal selection of spindle speed.