An Experimental Investigation on the Quasi-Static Flotation Transport of a Glass Substrate Using Vortex Bearing Elements
An Experimental Investigation on the Quasi-Static Flotation Transport of a Glass Substrate Using Vortex Bearing Elements
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DOI：
10.4236/jfcmv.2013.11002
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
Xin Li;Yoshihiro Nakamura;M. Horie;T. Kagawa
中科院分区：
文献类型：
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作者：
Xin Li;Yoshihiro Nakamura;M. Horie;T. Kagawa
本文采用新型涡流轴承元件搭建了一台气浮输送机，研究了准静态气浮输送中基质前端的气浮精度。通过实验研究了供气压力、基底厚度和涡流轴承元件安装方向三个因素对涡流轴承性能的影响。研究发现，在输运过程中，底质的运动导致了悬浮高度的变化。变化幅度（例如浮动精度）取决于轴承刚度和涡流轴承元件的吸力。适当提高供气压力可以提高浮选精度，但供气压力过大会因负压过大而造成过度抽吸，导致浮选精度降低。我们还知道，薄而轻的基质的浮选精度容易受到涡流吸力的影响，因为它们以较高的浮选高度漂浮并且更容易变形。最后，对涡轴承元件的四种安装方向进行了研究。不同的安装方向会导致不同的浮动高度变化。
In this paper, we build an air conveyor with newly developed vortex bearing elements, and study the flotation precision of the front-end of the substrate in quasi-static flotation transport. We experimentally discuss the three influential factors: air supply pressure, thickness of the substrates and installing direction of the vortex bearing element. We find that during the process of transport the movement of the substrate leads to the variation of flotation height. The amplitude of variation (e.g. flotation precision) is dependent upon the bearing stiffness and the suction force of the vortex bearing elements. Increasing air supply pressure properly can improve the flotation precision, but an excess pressure can cause over-suction due to high negative pressure and result in a poor flotation precision. We also know that the flotation precision of thin and light substrates are easily affected by the suction force of vortex flow because they float with a high flotation height and are more susceptible to deformation. Finally, we investigate four installing directions of the vortex bearing element. Different installing direction can lead to different variation of flotation height.