Multi-point forming technology for sheet metal

Li, M.Z.; Cai, Zheng-Li; Sui, Zhen; Yan, Qingguang

doi:10.1016/s0924-0136(02)00685-4

Cited by 178 publications

(89 citation statements)

References 3 publications

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“…4 (Zhong-Yi, 2002). MPF is based on controlling the elements and punches, hence, a matrix on punches can be shaped as required (Li, 2002). Fig.…”

Section: Multi Point Forming (Mpf)mentioning

confidence: 99%

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Reconfigurable Tooling by Using a Reconfigurable Material

Cortés¹,

Varela-Jimenez²,

Bueno-Vives³

2012

Manufacturing System

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“…4 (Zhong-Yi, 2002). MPF is based on controlling the elements and punches, hence, a matrix on punches can be shaped as required (Li, 2002). Fig.…”

Section: Multi Point Forming (Mpf)mentioning

confidence: 99%

“…Design of a tool based on multi-point technique has many considerations since it involves several variables and many issues and problems use to occur such as dimpling, buckling and non linear deformation of the material; due to this issues four main designs have been researched with different punches types (Li, 2002).…”

Section: Multi Point Forming (Mpf)mentioning

confidence: 99%

Reconfigurable Tooling by Using a Reconfigurable Material

Cortés¹,

Varela-Jimenez²,

Bueno-Vives³

2012

Manufacturing System

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“…Introducing Multi point forming [2,3] is a promising advanced flexible manufacturing approach to handle the variety of products by dividing the surface of the die into pins [4]. Sun studied the principals of flexible and rigid blank holders forming, a blank holder was placed above the workpiece and another under the workpiece, different types of blank holders resulted in sharply different results [5].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Manufacturing Implementation

Alsayyed¹,

Harib²

2014

AJME

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As trade competition is getting fiercer, innovation in all areas of product realization is becoming more of a need than a want. In this paper, the authors present an innovative idea for an actual implementation of reconfigurable manufacturing, where a FlexDie is designed to manufacture sheet metal parts. The idea is to mimic the representation of graphics and text on a screen using pixels. The developed FlexDie in this paper consists of the two halves that are similar in design. It comprises pixel like pins assembled next to each other in the XY plane. The pins' heights in the Z-direction are designed to be adjustable to yield a desired topology. Each pixel can be altered and locked at a certain Z-coordinate. A prototype is developed to test the concept and produce preliminary results. The developed prototype consists of two-half dies, each having 8x8 square pixels, each of about 10x10 square mm. In the implemented design the Z-coordinates of the pixels are controlled and locked at desired heights via an array of screws. Sample parts consisting of three-dimensional metal sheets were manufactured using the developed FlexDie. This implementation opens the door for a new way of reconfigurable manufacturing, where the hardware is designed to be programmable.

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“…Cold forming can be categorised as either conventional solid die forming or multi-point forming (MPF) for sheet metal, as shown in Figure 2. MPF is a cold forming manufacturing technique that combines three-dimensional sheet metal with a pair of multi-point dies consisting of upper and lower matrices of square punches with spherical ends in an MPF press [1]. By controlling each punch, a sheet part can be manufactured along a specific predefined forming path.…”

Section: Introductionmentioning

confidence: 99%

“…The method of "multi-point forming (MPF) for sheet metal" was first described by one of the authors in [2]. A series of improvements in MPF technology have been made in recent years [1]. In MPF, two matrices of punches replace the conventional stamping dies; the relative positions of the punches can be varied to suit specific requirements.…”

Section: Introductionmentioning

confidence: 99%

Numerical Methodology for Predicting the Nonlinear Elastic Deflection of Curved Beams and Plates Using Nonlinear Integral Equations

Seo¹,

Bae²,

Paik³

et al. 2013

J Civil Environ Eng

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Ships, ship-shaped offshore structures, land-based structures and aerospace structures typically consist of various curved beam and plate components. An important issue is how to manufacture and construct systems correctly and accurately when their variously shaped curved beams and plates display structural nonlinear behaviour. Multi-point forming is a general process that can be used to form variously shaped curved plates and beams. It has been difficult to apply the integrated systems to thin and/or thick metal plates and beams that have the characteristic of non-linear structural mechanics, such as nonlinear behaviour when loading is applied to the plates. The aim of this study was to derive a simplified numerical calculation based on the formulation of a nonlinear integral equation and a mathematical solution, to predict the nonlinear elastic deflection, load profile and elastic foundation of curved plates or/and beams during the early stages of the advanced manufacturing process of plate and beam formation. The validity of the method is demonstrated through simulations of the proposed numerical approach with experimental results.

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Multi-point forming technology for sheet metal

Cited by 178 publications

References 3 publications

Reconfigurable Tooling by Using a Reconfigurable Material

Reconfigurable Tooling by Using a Reconfigurable Material

Reconfigurable Manufacturing Implementation

Numerical Methodology for Predicting the Nonlinear Elastic Deflection of Curved Beams and Plates Using Nonlinear Integral Equations

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