Development of non-lubricated die for magnesium sheet forming of car body part

Nam, Jae-Du; Cha, Seung-Hoon; Ahn, Min-Su; Seo, Pan-Ki; Woo-Won, Kwang; Kang, Chung Gil

doi:10.1007/s12541-014-0446-2

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…Flexible tool-assisted forming processes, such as rubber pad forming, laser forming and hydroforming, are characterized by high accuracy, high surface quality and improved formability as well as have potential for fabricating complex shapes parts and difficult to form materials. 2,3 Consequently, this technology seems appropriate for producing miniaturized sheet metals parts.…”

Section: Introductionmentioning

confidence: 99%

Effect of process parameters on micro flexible deep drawing of stainless steel 304 cups utilizing floating ring: Simulation and experiments

Irthiea

Mahmood

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Due to its simplicity, versatility of process and feasibility of prototyping, using flexible tools in sheet forming seems appropriate for producing cups at microscales. This article presents a novel micro deep drawing technique in which a cooperation of a floating ring, as a primary rigid die, with a rubber pad, as a main flexible die, is employed for forming micro-cups. The function of the floating ring is to overcome minor wrinkles that commonly occur at flange portion, while the flexible die is to complete the forming stroke. The influence of initial sheet thickness, drawing ratio, punch corner radius and rubber height is studied through simulations and experiments. Furthermore, three size scales are adopted to investigate the possibility of using the proposed technique under different process dimensions. The code ABAQUS/Standard is utilized to build the finite element models and thereafter micro-forming experiments are carried out to verify the numerical results. For this purpose, a special setup is developed to be compatible with simulation models. The results show that the formed cups are characterized by very accurate dimensions, high surface quality, homogeneous wall thickness distribution in terms of maximum thinning and thickening and relatively large aspect ratio.

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Section: Introductionmentioning

confidence: 99%