Modeling and Analysis of Single Point Incremental Forming Force with Static Pressure Support and Ultrasonic Vibration

Liu, Bai; Li, Yan; Yang, Mingshun; Lin, You‐Yu; Yuan, Qilong; Zhao, Renfeng

doi:10.3390/ma12121899

Cited by 17 publications

(8 citation statements)

References 23 publications

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“…If the force on the z direction has positive values only, the forces on the x and y directions oscillate around zero. The values and variation behaviour of the forces in the unwelded blanks processed by SPIF are in complete agreement with other studies [33]. It should be noted from the very beginning that the forces in the processing of the truncated pyramid-shaped parts were higher due to a lower value in the z direction of the spiral trajectory pitch.…”

Section: Single Point Incremental Forming Of Tailored Welded Blankssupporting

confidence: 90%

“…The SPIF process can be performed on either a CNC milling machine [27], with the aid of a robot that follows a certain trajectoryor on a specially designed machine tool, such as the machine produced by the Japanese company, Amino. Numerical and experimental research conducted regarding SPIF has focused, for the most part, on the evaluation of the forming mechanism [28], the fracture mechanism and formability in SPIF, formally named spifability [29], on the determination of the principal strain and thickness reduction [30], residual stresses [31], as well as on the determination of the forces in the forming process [32,33] The applications of SPIF of TWB sheets combine the advantages of both processes. The most important applications of using the SPIF of TWB sheets are found in the automotive industry, for obtaining lighter parts which help reduce the weight of the entire automobile.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Oleksik

Dobrotă

Racz

et al. 2021

Metals

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The present paper aims to study the behaviour of Metal Active Gas (MAG) tailor welded blanks during the single point incremental forming process (SPIF) from an experimental point of view. The single point incremental forming process was chosen for manufacturing truncated cone and truncated pyramid shaped parts. The same material (S355) and the same thickness (0.9 mm) were selected for the joining of blank sheets because the main goal of the paper was to study the influence of the MAG welding process throughout the SPIF process. A Kuka robot, equipped with a force transducer and an optical measurement system were used for manufacturing and evaluating the parts by SPIF. The selected output data were major and minor strain, thickness reduction, forces and springback at the SPIF process. Another line test was performed to evaluate the formability in SPIF. The main conclusion of the paper is that during the SPIF process, fractures occur in one side welded blanks even at moderate wall angles, while in the case of double side welded blanks there is a decrease of formability but parts can still be produced at moderate angles (55 degrees) without any problems.

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Section: Single Point Incremental Forming Of Tailored Welded Blankssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Oleksik

Dobrotă

Racz

et al. 2021

Metals

View full text Add to dashboard Cite

show abstract

“…In addition to the heating of the material, some combined processes were introduced that had been designed to form materials with higher strength. In this field of research, the authors have either combined incremental forming with a preliminary classical forming process [83,[95][96][97] or applied additional vibration of the tool to the forming force [86,[97][98][99].…”

Section: Forming Forcesmentioning

confidence: 99%

“…The vibration on the contact surface formed between the punch and the specimen is obtained through added vibrating systems such as an ultrasonic vibration generator [99] or through a special shape of the rotating forming punch, which is discrete in only making contact with the formed part [97]. Bai et al [99] applied additional force to the tool load commonly used in the SPIF process and also to the static pressure support applied below the formed specimen and to ultrasonic vibration of the forming tool, which should decrease the effect of springback during the forming of the specimen. The authors have described the analytical model of the forming forces applied, which arises through the proposed process modifications, and have empirically verified them.…”

Section: Forming Forcesmentioning

confidence: 99%

Emerging Trends in Single Point Incremental Sheet Forming of Lightweight Metals

Trzepieciński

Oleksik

Pepelnjak

et al. 2021

Metals

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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.

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“…To meet these requirements, the small-and ultra-small-lot manufacturing industry is increasingly turning to incremental sheet forming (ISF) processes. ISF consists in deforming the workpiece by means of gradual local deformation of the sheet metal using a pin-type tool [1,2].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Surface Roughness in Incremental Sheet Forming of Conical Drawpieces from Pure Titanium Sheets

et al. 2022

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The article presents the results of the analysis of the influence of incremental sheet forming process parameters on surface roughness measured on both sides of conical drawpieces made from pure titanium Grade 2 sheets. The experimental plan was created on the basis of a central composite design. The study assumed the variability of feed rate, spindle speed, and incremental step size in the following range: 500–2000 mm/min, 0–600 rpm, and 0.1–0.5 mm, respectively. Two strategies differing in the direction of the tool rotation in relation to the feed direction were also analysed. Analysis of variance is performed to understand the adequacy of the proposed model and the influence of the input parameters on the specific roughness parameter. The sensitivity of the process parameter on the selected surface roughness parameters was assessed using artificial neural networks. It was found that the change in the surface roughness of the inner surface of the drawpiece is not related to the change of surface roughness of the outer side. The morphology of the outer surface of the draw pieces was uniform with a much greater profile height than the inner surface that had interacted with the tool. Taking into account the outer surface of the drawpiece, the direction of tool rotation is also most closely correlated with the parameters Sa, Sz, and Sku. Step size and feed rate provide the highest information capacity in relation to skewness and kurtosis of the inner surface of the drawpiece.

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Modeling and Analysis of Single Point Incremental Forming Force with Static Pressure Support and Ultrasonic Vibration

Cited by 17 publications

References 23 publications

Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Experimental Research on the Behaviour of Metal Active Gas Tailor Welded Blanks during Single Point Incremental Forming Process

Emerging Trends in Single Point Incremental Sheet Forming of Lightweight Metals

Investigation of Surface Roughness in Incremental Sheet Forming of Conical Drawpieces from Pure Titanium Sheets

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