Micro-scaled progressive forming of bulk micropart via directly using sheet metals

Fu, Ming; Chan, Wai Ming

doi:10.1016/j.matdes.2013.02.045

Cited by 57 publications

(42 citation statements)

References 25 publications

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“…To ensure the precise positioning, guide holes are created on the edge of the strip and guide pins are used along the different stages in the process. Progressive microforming system for fabrication of (a) micro-scale flanged parts [4,5] and (b) two-level flanged part [10,11].…”

Section: Characteristic Of Progressive Microformingmentioning

confidence: 99%

“…The blanked surfaces of the materials with different states in the blanking process, the third operation of the progressive forming developed by Chan and Fu [4,5], are shown in Fig. 7.…”

Section: Fracture Surfacementioning

confidence: 99%

“…To explore this process, Hirota [3] extruded micro-billet via pressing the sheet material in thickness direction. Fu and Chan [4,5] further examined the feasibility of this process to fabricate the meso-and micro-scaled parts by directly using sheet metal, and identified its characteristics via scaling down the part size and using the materials with different grain sizes. Ghassemali et al [6][7][8][9] further developed this process to manufacture the micro-pins by directly using copper strip, which consists of two simple steps, including extrusion and blanking.…”

Section: Introductionmentioning

confidence: 99%

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Review on progressive microforming of bulk metal parts directly using sheet metals (Keynote Paper)

Meng

2015

MATEC Web of Conferences

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Abstract. Due to the ubiquitous trend of product miniaturization, energy saving and weight reduction, micro/meso-scale parts have been widely used in many industrial clusters. Micromanufacturing processes for production of such micro/meso-scale parts are thus critically needed. Microforming, as one of these micro manufacturing processes, is a promising process and thus got many explorations and researches. Compared with the research on size effect affected deformation behaviours, less attention has been paid to the process development for mass production of micro-parts. The product quality and fabrication productivity of micro-parts depend on the involved process chain. To address the difficulty in handling and transporting of the micro-sized workpiece, development of a progressive microforming process for directly fabricating bulk micro-parts using sheet metals seems quite promising as it avoids or facilitates billet handling, transportation, positioning, and ejection in the process chain. In this paper, an intensive review on the latest development of progressive microforming technologies is presented. First of all, the paper summarizes the characteristic of progressive microforming directly using sheet metal. The size effect-affected deformation behaviour and the dimensional accuracy, deformation load, ductile fracture, and the surface finish of the microformed parts by progressive microforming using sheet metals are then presented. Finally, some research issues from the implementation of mass production perspective are also discussed.

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Section: Characteristic Of Progressive Microformingmentioning

confidence: 99%

“…The blanked surfaces of the materials with different states in the blanking process, the third operation of the progressive forming developed by Chan and Fu [4,5], are shown in Fig. 7.…”

Section: Fracture Surfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Review on progressive microforming of bulk metal parts directly using sheet metals (Keynote Paper)

Meng

2015

MATEC Web of Conferences

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“…Prior study [61] used the microblanking process to fabricate microcylinders with the diameter of 1 and 0.53 mm using copper sheets with different states, as shown in Fig. 4.21.…”

Section: Deformation Behaviormentioning

confidence: 99%

Microforming Processes

Chan

2014

Springer Series in Advanced Manufacturing

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“…With its booming development, the demand on the accuracy of the metallic micro parts is elevating and has stimulated the research on the precision evaluation of micro-formed parts. In terms of micro bending process, the springback, caused by elastic recovery during unloading, is an important factor significantly affects the dimensional accuracy of micro-bent parts [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of size effects on material properties and springback behavior of metal foils in micro bending: A review

Liu

Zhao

Qin

et al. 2015

MATEC Web of Conferences

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Abstract. With product miniaturization, the requirement on good forming quality and high dimensional accuracy of micro parts is increasing dramatically. In micro bending process, the springback, a critical factor for the accuracy of micro-bent parts, is significantly affected by size effects. In view of the strong influence of material properties on springback behavior, this paper first reviews the influences of three size-dependent factors on material properties, including foil thickness, grain size and thickness to grain size ratio. Afterwards, the review on the influences of these factors on springback behavior are presented, aiming at enhancing the understanding of relevant size effects and proposing a quantitative analysis approach to evaluate the dimensional accuracy of micro-bent parts.

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Micro-scaled progressive forming of bulk micropart via directly using sheet metals

Cited by 57 publications

References 25 publications

Review on progressive microforming of bulk metal parts directly using sheet metals (Keynote Paper)

Review on progressive microforming of bulk metal parts directly using sheet metals (Keynote Paper)

Microforming Processes

Influence of size effects on material properties and springback behavior of metal foils in micro bending: A review

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