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A study on the die structure for the improvement of the geometric accuracy in the single point sheet incremental forming process  

LEE, Won-Joon (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
KIM, Min-Seok (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
Seon, Min-Ho (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
YU, ․Jae-Hyeong (Dept. of Mechanical Information Engineering, Seoul National University of Science and Technology)
Lee, Chang-Whan (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
Publication Information
Design & Manufacturing / v.16, no.2, 2022 , pp. 53-59 More about this Journal
Abstract
Unlike other press forming processes, ISF (Incremental sheet forming) doesn't require a punch and die set. However, during the ISF processes unwanted bending deformation occurred around the target geometry. This paper is aimed to analyze the effect of the die structure, which is supported by bolts, on the geometric accuracy of the ISF processes. In this research, the ISF processes with Al5052 sheet of 0.5 mm, the tool diameter of 6 mm and the stepdown of 0.4 mm was employed. L-shaped, step-shaped, relief-shaped geometry were employed in experiments. Sectional view and the plastic strain were compared. From this research we find out that the bolt supported ISF processes increases the geometric accuracy of products very effectively.
Keywords
Incremental forming; Aluminum alloy sheet; Bolt support; Geometric accuracy;
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