Forces in Single Point and Two Point Incremental Forming

Single Point Incremental Forming

Forces have been measured in Two Point Incremental Forming and Single Point Incremental Forming of Sheet Metal. It is necessary to know the magnitude of these forces when trying to determine if the equipment available is capable of Forming Sheet Metal by either one of the two foregoing processes. The magnitude of forces is also needed when developing appropriate models for the Incremental Sheet Forming. The forces measured in forming cones and truncated pyramids from AA 3003-0 are described.

Design and manufacturing of a fixing device for incremental sheet forming process

MATEC Web of Conferences ◽

10.1051/matecconf/201817802004 ◽

2018 ◽

Vol 178 ◽

pp. 02004 ◽

Cited By ~ 2

Author(s):

Daniel Nasulea ◽

Gheorghe Oancea

Keyword(s):

Sheet Metal ◽

Deep Drawing ◽

Incremental Forming ◽

Single Point ◽

Fem Simulation ◽

Sheet Forming ◽

Forming Process ◽

Design And Manufacturing

In incremental sheet forming processes, the expensive dedicated tool are avoided and replaced with a cheap and simple fixing device which support the sheet metal blanks. The current paper presents how a fixing device used for single point incremental forming device is designed, FEM simulated and manufactured. The fixing device can be used for parts with a cone frustum and pyramidal frustum made of DC05 deep drawing steel. The forces developed in the process and the device displacements were estimated using FEM simulation. The device components were manufactured using a CNC machines and the physical assembly is also presented in the paper.

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

Multiobjective optimization of process variables in single-point incremental forming using grey relational analysis coupled with entropy weights

10.1177/14644207211020401 ◽

2021 ◽

pp. 146442072110204

Author(s):

Abdulmajeed Dabwan ◽

Adham E Ragab ◽

Mohamed A Saleh ◽

Atef M Ghaleb ◽

Mohamed Z Ramadan ◽

...

Keyword(s):

Grey Relational Analysis ◽

Incremental Forming ◽

Single Point ◽

Sheet Forming ◽

Numerical Control ◽

Process Variables ◽

Relational Analysis ◽

Grey Relational

Incremental sheet forming is a specific group of sheet forming methods that enable the manufacture of complex parts utilizing computer numerical control instead of specialized tools. It is an incredibly adaptable operation that involves minimal usage of sophisticated tools, dies, and forming presses. Besides its main application in the field of rapid prototyping, incremental sheet forming processes can be used for the manufacture of unique parts in small batches. The goal of this study is to broaden the knowledge of the deformation process in single-point incremental forming. This work studies the deformation behavior in single-point incremental forming by experimentally investigating the principal stresses, principal strains, and thinning of single-point incremental forming products. Conical-shaped components are fabricated using AA1050-H14 aluminum alloy at various combinations of fundamental variables. The factorial design is employed to plan the experimental study and analysis of variance is conducted to analyze the results. The grey relational analysis approach coupled with entropy weights is also implemented to identify optimum process variables for single-point incremental forming. The results show that the tool diameter has the greatest effect on the thinning of the SPIF product, followed by the sheet thickness, step size, and feed rate.

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

Parameter optimization and texture evolution in single point incremental sheet forming process

10.1177/0954405419846001 ◽

2019 ◽

Vol 234 (1-2) ◽

pp. 126-139 ◽

Cited By ~ 1

Author(s):

Shamik Basak ◽

K Sajun Prasad ◽

Amarjeet Mehto ◽

Joy Bagchi ◽

Y Shiva Ganesh ◽

...

Keyword(s):

Surface Roughness ◽

Process Parameters ◽

Regression Models ◽

Incremental Forming ◽

Single Point ◽

Sheet Forming ◽

Input Process ◽

Truncated Cone

Prototyping through incremental sheet forming is emerging as a latest trend in the manufacturing industries for fabricating personalized components according to customer requirement. In this study, a laboratory scale single-point incremental forming test setup was designed and fabricated to deform AA6061 sheet metal plastically. In addition, response surface methodology with Box–Behnken design technique was used to establish different regression models correlating input process parameters with mechanical responses such as angle of failure, part depth per unit time and surface roughness. Correspondingly, the regression models were implemented to optimize the input process parameters, and the predicted responses were successfully validated at the optimal conditions. It was observed that the predicted absolute error for angle of failure, part depth per unit time and surface roughness responses was approximately 0.9%, 4.4% and 6.3%, respectively, for the optimum parametric combination. Furthermore, the post-deformation responses from an optimized single point incremental forming truncated cone were correlated with microstructural evolution. It was observed that the peak hardness and highest areal surface roughness of 158 ± 9 HV and 1.943 μm, respectively, were found near to the pole of single-point incremental forming truncated cone, and the highest major plastic strain at this region was 0.80. During incremental forming, a significant increase in microhardness occurred due to grain refinement, whereas a substantial increase in the Brass and S texture component was responsible for the increase in the surface roughness.

Experimental Investigations and Numerical Analysis for Improving Knowledge of Incremental Sheet Forming Process for Sheet Metal Parts

Materials Science Forum ◽

10.4028/www.scientific.net/msf.623.37 ◽

2009 ◽

Vol 623 ◽

pp. 37-48 ◽

Cited By ~ 2

Author(s):

Steeve Dejardin ◽

Jean Claude Gelin ◽

Sebastien Thibaud

Keyword(s):

Sheet Metal ◽

Incremental Forming ◽

Single Point ◽

Sheet Forming ◽

Experimental Investigations ◽

Metal Parts ◽

Sheet Metal Parts ◽

Forming Strategy ◽

Set Up

The paper is related to the analysis of shape distortions and springback effects arising in Single Point Incremental Forming. An experimental set up has been designed and manufactured to carry single point incremental forming on small size sheet metal parts. The experimental set up is mounted on 3-axes CNC milling machine tool and the forming tool is attached and move with the spindle. Experiments have been carried out on sheet metal parts to obtain tronconical shapes. The forming strategy associated to the movement of the forming tool has been also investigated. The experiments indicate that shape distortions arising in the corners of the tronconical shape are clearly related to forming strategy. The springback of rings cut in the tronconical parts have been also investigated. It is shown that positive or negative springback could be also related to forming strategy. In order to enhance experimental investigations, Finite Element simulations of the incremental sheet forming have been performed. Results obtained from the simulations prove that if boundary conditions and forming strategy carefully are taking into account, the finite elements results are in good agreement with experiments. So it is then possible to use FEM as a design tool for incremental sheet forming.

Emerging Trends in Single Point Incremental Sheet Forming of Lightweight Metals

Metals ◽

10.3390/met11081188 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1188

Author(s):

Tomasz Trzepieciński ◽

Valentin Oleksik ◽

Tomaž Pepelnjak ◽

Sherwan Mohammed Najm ◽

Imre Paniti ◽

...

Keyword(s):

Sheet Metal ◽

Incremental Forming ◽

Single Point ◽

High Strength ◽

Sheet Forming ◽

Process Conditions ◽

Lightweight Materials ◽

Ultrasonic Assisted ◽

Lightweight Metals

Lightweight materials, such as titanium alloys, magnesium alloys, and aluminium alloys, are characterised by unusual combinations of high strength, corrosion resistance, and low weight. However, some of the grades of these alloys exhibit poor formability at room temperature, which limits their application in sheet metal-forming processes. Lightweight materials are used extensively in the automobile and aerospace industries, leading to increasing demands for advanced forming technologies. This article presents a brief overview of state-of-the-art methods of incremental sheet forming (ISF) for lightweight materials with a special emphasis on the research published in 2015–2021. First, a review of the incremental forming method is provided. Next, the effect of the process conditions (i.e., forming tool, forming path, forming parameters) on the surface finish of drawpieces, geometric accuracy, and process formability of the sheet metals in conventional ISF and thermally-assisted ISF variants are considered. Special attention is given to a review of the effects of contact conditions between the tool and sheet metal on material deformation. The previous publications related to emerging incremental forming technologies, i.e., laser-assisted ISF, water jet ISF, electrically-assisted ISF and ultrasonic-assisted ISF, are also reviewed. The paper seeks to guide and inspire researchers by identifying the current development trends of the valuable contributions made in the field of SPIF of lightweight metallic materials.

Single Point Incremental Forming of a Medical Implant

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.554-557.1388 ◽

2013 ◽

Vol 554-557 ◽

pp. 1388-1393 ◽

Cited By ~ 9

Author(s):

Rogério Araújo ◽

Pedro Teixeira ◽

M. Beatriz Silva ◽

Ana Reis ◽

Paulo Martins

Keyword(s):

Plastic Deformation ◽

Incremental Forming ◽

Single Point ◽

Sheet Forming ◽

Potential Fields ◽

Medical Implants ◽

Medical Implant ◽

Product Customization

Single point incremental forming (SPIF) belongs to the branch of incremental sheet forming processes that enables plastic deformation of blanks without resorting to any specific die or punch. The main characteristics of SPIF determine its appropriateness for producing small batches or single products, being the medical implants one of the key potential fields of application, due to the need of product customization to each patient. Customization is particularly important for obtaining preoperative implants because it allows a significant decrease in the overall surgery time in conjunction with a higher level of flexibility to ensure the required shapes. This results in an improved final product either in aesthetic as well as in functional terms.

Asymmetric Single Point Incremental Forming of Sheet Metal

CIRP Annals ◽

10.1016/s0007-8506(07)60021-3 ◽

2005 ◽

Vol 54 (2) ◽

pp. 88-114 ◽

Cited By ~ 670

Author(s):

J. Jeswiet ◽

F. Micari ◽

G. Hirt ◽

A. Bramley ◽

J. Duflou ◽

...

Keyword(s):

Sheet Metal ◽

Incremental Forming ◽

Single Point ◽

Single Point Incremental Forming

Common defects of parts manufactured through single point incremental forming

MATEC Web of Conferences ◽

10.1051/matecconf/202134304007 ◽

2021 ◽

Vol 343 ◽

pp. 04007

Author(s):

Mihai Popp ◽

Gabriela Rusu ◽

Sever-Gabriel Racz ◽

Valentin Oleksik

Keyword(s):

Sheet Metal ◽

Metal Forming ◽

Incremental Forming ◽

Single Point ◽

Forming Process ◽

Metal Forming Process ◽

Serial Robot ◽

The Many ◽

Cold Metal

Single point incremental forming is one of the most intensely researched die-less manufacturing process. This process implies the usage of a CNC equipment or a serial robot which deforms a sheet metal with the help of a relatively simple tool that follows an imposed toolpath. As every cold metal forming process, besides the many given advantages it has also some drawbacks. One big drawback in comparison with other cold metal forming processes is the low accuracy of the deformed parts. The aim of this research is to investigate the sheet metal bending mechanism through finite element method analysis. The results shows that the shape of the retaining rings has a big influence over the final geometrical accuracy of the parts manufactured through single point incremental forming.