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Thrust bearing design for high-speed composite air spindles

机译:高速复合空气主轴的推力轴承设计

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摘要

The air spindles whose shafts are made of carbon fiber composite are appropriate for high-speed and high-precision machining such as small hole drilling of printed circuit board (PCB) or wafer cutting for manufacturing semiconductors because the carbon fiber composite shaft has low rotational inertia, high damping ratio and high fundamental natural frequency. The axial load capability and stiffness of air spindles for drilling operation are dependent on thrust bearings that are composed of Air supply part mounted on the housing and rotating part mounted on the rotating shaft of spindle.
机译:由于碳纤维复合材料轴的旋转惯性低,因此其轴由碳纤维复合材料制成的空气主轴适用于诸如印刷电路板(PCB)的小孔钻削或用于制造半导体的晶片切割之类的高速高精度加工。 ,高阻尼比和高基本固有频率。空气主轴在钻孔过程中的轴向负载能力和刚度取决于推力轴承,该推力轴承由安装在壳体上的供气部分和安装在主轴旋转轴上的旋转部分组成。

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