Performance of a non-contact handling device using swirling flow with various gap height |
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Authors: | Shouichiro Iio Masako Umebachi Xin Li Toshiharu Kagawa and Toshihiko Ikeda |
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Institution: | (1) Department of Environmental Science and Technology, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan;(2) Department of Environmental Science and Technology, Graduate School of Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan;(3) Precision and Intelligence Laboratory, Tokyo Institute of Technology, R2-45, 4259 Nagatsuta-chou, Midori-ku, Yokohama 226-8503, Japan |
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Abstract: | Abstract Vortex levitation can achieve non-contact handling by blowing air into a vortex cup through a tangential nozzle to generate
a swirling flow. In this paper, we focused on the relationship between the sucking pressure and the flow dynamics when gap
distance from the cup to a work piece changes. Then simultaneous measurement of a pressure and a flow field in the cup was
performed. As a result, the mean pressure changes and the pressure fluctuation inside the cup enhances with increasing gap
height. Especially, periodic pressure perturbation is observed with wide gap height and it synchronizes with an eccentric
rotation of the swirling flow. It is also found that the rotation axis of swirling flow steadily inclines against the central
axis of the cup for appropriate gap height. |
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