Determination of Hammering Sequence in Incremental Sheet Metal Forming Using Genetic Algorithm.

Mori, Ken-ichiro; Yamamoto, Masao; Osakada, Kozo

doi:10.1299/kikaia.62.2456

Cited by 11 publications

(9 citation statements)

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“…Mori 등은 점진단조로 판재에 임의의 곡률을 발생시켜야 하는 경우에 적합한 단조 순서를 유 전 알고리즘을 통하여 예측하였다 [1]. 천명식 등은 사이드 프레스에 의한 슬래브의 폭 압하에 대한 변형거동을 해석하였다 [2].…”

Section: 서 론unclassified

Deformation Characteristics in Incremental Forging of a Slab

2009

Transactions of Materials Processing

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Large load is required in forging of large-scale components which becomes a critical restriction in practice. In the present study, two methods of incremental forging were investigated for the purpose of reducing the load required for forging of large and thick plates. The forging was applied primarily to obtain fine grains by imposing large amount of plastic deformation to the plates. One was to use nine strokes with a flat die and the other was to use three strokes with a curved die. The die moves vertically in the former while it moves vertically as well as rolls horizontally in the latter. Deformation of the slab in each case was analyzed by rigid-plastic finite element method and as a result, variations of load and slab holding force, and distributions of effective strain and thickness were predicted.

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Section: 서 론unclassified

Deformation Characteristics in Incremental Forging of a Slab

2009

Transactions of Materials Processing

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“…The conventional forming processes for sheet metal are suitable for producing large quantities of products; nevertheless, large initial investments are economically unsuitable for small-batch products. For this reason, some continuous forming processes have been developed, which could be used to manufacture a number of sheet metal parts with different shapes in condition of low setup cost, such as incremental sheet metal forming process [1][2][3][4] and rolling process [5][6][7][8]. Yoon et al developed the incremental roll forming process composed of two pairs of lower support rolls and one upper center roll to manufacture 3D surface parts [9,10].…”

Section: Introductionmentioning

confidence: 99%

Investigation and improvement of 3D rolling process for 3D surface parts

Wang

et al. 2014

Int J Adv Manuf Technol

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3D rolling is a novel forming process for manufacturing 3D surface parts by employing a pair of forming rolls as a forming tool. By controlling the nonuniform distribution of roll gap of the forming rolls, residual stress of the sheet metal makes the sheet metal bend in the transverse and longitudinal directions simultaneously. As the roll adjusting radius is much larger than the target transverse curvature radius of the forming surface, the forming roll could rotate around its axis easily, which is suitable for producing 3D surface parts including the wide sheet metal with relatively small transversal curvature radius. In this paper, different roll adjusting radii are investigated for 3D surface parts, and the 3D rolling process has been improved to increase the length of effectively forming region of the forming parts and improve the utilization rate of sheet metal. Finite element analysis models are established; spherical and saddle surfaces are simulated. The corresponding experimental results are obtained. The dimensional accuracy of the forming part is measured, and the differences of the forming processes are analyzed by comparing the simulated results. The comparison and analysis of the forming results show the feasibility of the improved method of 3D rolling process for 3D surface parts.

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“…In subsequent years, a number of significant developments followed. Mori and Yamamoto proposed a new incremental forming method, in which the forming was carried out by a series of movements using a hemispherical hammer hammering the metal sheet into a 3D shape (Mori, et al, 1996). A simple hemispherical part was made.…”

Section: Introductionmentioning

confidence: 99%

A New Rapid Prototyping Process for Sheet Metal Parts

Luo¹,

He²,

Du³

2011

Rapid Prototyping Technology - Principles and Functional Requirements

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Determination of Hammering Sequence in Incremental Sheet Metal Forming Using Genetic Algorithm.

Cited by 11 publications

References 0 publications

Deformation Characteristics in Incremental Forging of a Slab

Deformation Characteristics in Incremental Forging of a Slab

Investigation and improvement of 3D rolling process for 3D surface parts

A New Rapid Prototyping Process for Sheet Metal Parts

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