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http://dx.doi.org/10.7735/ksmte.2016.25.6.410

Controlling the Depth of Microchannels Formed during Rolling-based Surface Texturing  

Bui, Quang-Thanh (Department of Nano-Mechatronics, Korea University of Science and Technology)
Ro, Seung-Kook (Department of Nano-Mechatronics, Korea University of Science and Technology)
Park, Jong-Kweon (Department of Nano-Mechatronics, Korea University of Science and Technology)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.25, no.6, 2016 , pp. 410-420 More about this Journal
Abstract
The geometric dimension and shape of microchannels that are formed during surface texturing are widely studied for applications in flow control, and drag and friction reduction. In this research, a new method for controlling the deformation of U channels during micro-rolling-based surface texturing was developed. Since the width of the U channels is almost constant, controlling the depth is essential. A calibration procedure of initial rolling gap, and proportional-integral PI controllers and a linear interpolation have been applied simultaneously to control the depth. The PI controllers drive the position of the pre-U grooved roll as well as the rolling gap. The relationship between the channel depth and rolling gap is linearized to create a feedback signal in the depth control system. The depth of micro channels is studied on A2021 aluminum lamina surfaces. Overall, the experimental results demonstrated the feasibility of the method for controlling the depth of microchannels.
Keywords
Micro-rolling; Position control; Surface texturing; Micro-forming; Compliant mechanism;
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Times Cited By KSCI : 3  (Citation Analysis)
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