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http://dx.doi.org/10.7736/KSPE.2016.33.11.911

Process Design of Conical Roll-Shaping for Fabrication of Variable Curvature Spiral Blade  

Yang, Sungmoon (Graduate School of Mechanical Engineering, Pusan National University)
Shim, Dosik (Green Manufacturing Process R&D Group, Korea Institute of Industrial Technology)
Ji, Hoseong (School of Mechanical Engineering, MEMS Technology Centre, Pusan National University)
Baek, Joonho (Department of Engineering Research, ESCO RTS Co., Ltd.)
Kim, Bongsik (Department of Engineering Research, ESCO RTS Co., Ltd.)
Ahn, Seokyoung (School of Mechanical Engineering, ERC/NSDM, Pusan National University)
Park, Sanghu (School of Mechanical Engineering, ERC/NSDM, Pusan National University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.33, no.11, 2016 , pp. 911-918 More about this Journal
Abstract
A conical roll-shaping process was proposed for fabrication of a metallic spiral blade applied to a small-scale wind turbine system. A spiral blade has continuously different curvatures, with a range of 100 to 350 mm radius. To fabricate this complex shape, we developed a conical roll-shaping process having two main conical rollers for feeding a blank sheet, and two cylindrical side rollers for control of local bending. For clear understanding of the process parameters, numerical analyses were conducted using a commercial code, Pam-Stamp. This study optimized the effects of process parameters, such as gap and angle between the main rollers and side rollers, and also the movement of side rollers. In order to increase the forming efficiency, a central rotation point was also calculated by the analytical approach. This developed rolling process can thus be utilized in a sheet metal forming process for obtaining spirally curved sheet metal shapes.
Keywords
Small wind turbine; Spiral blade; Roll-Shaping; Conical roller; Variable curvature;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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