Incremental Metal Forming Processes in Manufacturing

Reddy, Venkata; Lingam, Rakesh; Cao, Jian

doi:10.1007/978-1-4471-4670-4_45

Cited by 15 publications

(4 citation statements)

References 82 publications

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“…4 Schematic illustration of material movement to calculate sheet thickness during multi-stage forming [8] forces can be easily predicted using down word movement of tool from starting location to current location. It is also clearly known from literature [1,3,14] that tool and sheet get elastically deflected and the same has to be considered for accurate prediction of rigid body displacement and formed geometry after each stage. Schematic representation of material movement along the cross sectional profile of a component during tool movement along a segment of spiral path is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…There is a limitation on maximum angle that can be formed using single stage SPIF, hence multiple stages are preferred to form components with large wall angles [1]. More recently, Cao et al [2] and Reddy et al [3] presented a comprehensive review of the latest literature on incremental forming including Multi-stage Single Point Incremental Forming (MSPIF). They also presented a tool path generation methodology based on the geometry and surface finish requirements in incremental forming and finally demonstrated a new double-side incremental forming process to form parts with double curvatures on both sides of the initial plane of the sheet.…”

Section: Introductionmentioning

confidence: 99%

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Analytical prediction of formed geometry in multi-stage single point incremental forming

2015

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical prediction of formed geometry in multi-stage single point incremental forming

2015

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“…However, the overlap of increment steps will leave a distinct mark on the deforming surface, as shown in Fig. 19a [69]. The helical tool path in Fig.…”

Section: Contour and Helical Tool Pathmentioning

confidence: 99%

Heat-assisted incremental sheet forming for high-strength materials — a review

Attallah²,

Essa³

2022

Int J Adv Manuf Technol

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Single-point incremental forming (SPIF) is a sheet forming technique that deforms sheet materials incrementally to a designated shape. The process has shown high ability to deform low-strength materials for good geometrical accuracy and formability at room temperature. Deforming high-temperature alloys, such as high-strength steels and Ti-6AI-4 V, requires integrated heat sources to increase the ductility of the metal sheets for deformation. However, the integration of heating results in unpredictable thermal behaviours and impacts the formability, geometric accuracy, thickness distribution and surface quality. Considerable research efforts have invented different heating methods and designed novel tools and analytical modelling to resolve the limitations. The current challenge remains improving the localised and stable heating, functional tool design to reduce the thermal expansion and friction at the tool-surface contact area and the analysis of relationship between thermal and mechanical effects. This study aims to review the heating-assisted SPIF systems for high-strength alloy sheets to solve the current limitations. The method includes analysis of heating systems, tool, tool path design, lubricants and macro- and micro-numerical analyses. Additionally, the study aims to correlate the microstructural properties to the mechanical behaviours and subsequent effects on forming force, strain, springback, geometrical accuracy and surface quality.

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“…Additionally, obvious "pillow effect" was observed at the flat bases of the parts formed in the SPIF processes. The "pillow effect" is one of typical geometric inaccuracies in SPIF, however, there is no notable "pillow effect" in TPIF with the use of dies to support the flat base [18].…”

Section: Introductionmentioning

confidence: 99%

Part accuracy improvement in two point incremental forming with a partial die using a model predictive control algorithm

Kearney

Wang

et al. 2017

Precision Engineering

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.Part accuracy improvement in two point incremental forming with a partial die using a model predictive control algorithm.Precision Engineering http://dx.doi.org/10. 1016/j.precisioneng.2017.02.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Research highlights: Flexible forming technologies are becoming increasingly significant with the rise of small batch and customised production in the market. work. The enhanced control algorithm is able to correct the toolpath in both the vertical and horizontal directions. In the newly-added horizontal control module, intensive profile points in the evenly distributed radial directions of the horizontal section were used to estimate the horizontal error distribution along the horizontal sectional profile during the forming process. The toolpath correction was performed through properly adjusting the toolpath in two directions based on the optimised toolpath parameters at each step. A case study for forming a non-axisymmetric shape was conducted to experimentally validate the developed toolpath correction strategy. Experiment results indicate that the two-directional toolpath correction approach contributes to part accuracy improvement in TPIF compared with the typical TPIF process that is without toolpath correction.

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Incremental Metal Forming Processes in Manufacturing

Cited by 15 publications

References 82 publications

Analytical prediction of formed geometry in multi-stage single point incremental forming

Analytical prediction of formed geometry in multi-stage single point incremental forming

Heat-assisted incremental sheet forming for high-strength materials — a review

Part accuracy improvement in two point incremental forming with a partial die using a model predictive control algorithm

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