A model predictive path control algorithm of single-point incremental forming for non-convex shapes

He, An; Kearney, Michael; Weegink, Kristian J.; Wang, Chenhao; Liu, Sheng; Meehan, Paul A.

doi:10.1007/s00170-020-04989-5

Cited by 14 publications

(3 citation statements)

References 26 publications

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“…As in previous investigation, the formability decreases with an increasing wall angle. He et al (2020) develop a continuous monitoring and correction algorithm for ISF. A closed loop continuously corrects the toolpath to ensure the adherence with the final geometry.…”

Section: Previous Isf Studiesmentioning

confidence: 99%

Three pass incremental sheet forming: A new strategy for the manufacture of brass musical instruments

Wodehouse

Marini

Yakushina

et al. 2022

Journal of Manufacturing Processes

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Section: Previous Isf Studiesmentioning

confidence: 99%

Three pass incremental sheet forming: A new strategy for the manufacture of brass musical instruments

Wodehouse

Marini

Yakushina

et al. 2022

Journal of Manufacturing Processes

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“…After the experimental validation of the proposed method research was extended to improve the strategy by using a two-directional algorithm that entails the optimization of two parameters acting in two different directions, vertical and horizontal [33]. Paper [34] reports about research where the model predictive control algorithm was applied to complex and non-convex shapes with the result of a 44% to 74% reduction of geometric errors.…”

Section: Introductionmentioning

confidence: 99%

Achieving Accuracy Improvements for Single-Point Incremental Forming Process Using a Circumferential Hammering Tool

Nasulea

Oancea

2021

Metals

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The paper presents a novel solution for improving the accuracy of the wall area of parts manufactured by single point incremental forming. Thus, a forming tool with a special design that works according to the principle of circumferential hammering is deployed, with a direct improving effect of the forming conditions and consequently of the dimensional accuracy of the part. The research is focused on an experimental study of frustum-of-cone shapes manufactured from sheet metal blanks of DC05 deep drawing steel of 1 mm thickness. A typical customary technological setup is used for the single point incremental forming process, without any additional elements, and two forming tools, a hemispherical and a special one, which use the circumferential hammering effect. Several preliminary tests using both tools were performed in order to prove that part accuracy can be significantly improved by using the circumferential hammering tool. The research was further expanded to investigate the influence on part wall dimensional accuracy of three factors: tool spindle speed, tool feed rate and part dimensional configuration. Using a full factorial plan of experiments the results of 32 test runs were processed. All parts were machined adequately, free of any material fracturing. Based on the achieved machining accuracy of the part walls, precision mathematical models were developed for the prediction of part dimensional accuracy in those areas. The mathematical models were validated by practice, as the predicted accuracies were matched by the experimental results.

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“…A predictive toolpath control algorithm was proposed to reduce the geometric errors of complex SPIF components. The results showed that the closed-loop path minimized geometric errors [24]. The finite element simulation method has been developed to simulate localised convective heating in the SPIF process.…”

Section: Introductionmentioning

confidence: 99%

Surface roughness analysis of medical grade titanium sheets formed by single point incremental forming

Gatea

2021

Int J Adv Manuf Technol

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Single point incremental forming (SPIF) process has proven benefits in terms of formability, flexibility, and low cost as compared to conventional sheet forming, although it has some issues such as dimensional accuracy and low quality of surface finish for some materials. The SPIF is considered as a potential method of producing customised medical parts such as craniofacial implants using a titanium sheet. This investigation aims to analyse the overall surface roughness of grade 1 pure titanium along the wall of the hyperbolic truncated cone formed by the SPIF process with different forming parameters (i.e., forming tool diameter, step size, and feed rate). Focus variation microscopy was used to measure the surface roughness experimentally along the wall of the truncated cone. Abaqus/Explicit was used to predict the equivalent stress and equivalent plastic strain along the wall of the truncated cone part from the top to the fractured region to evaluate the relationship between the stress, strain, and roughness distribution. It was found that the surface roughness changes with the deformed part height and rough surface could be produced in the region of high equivalent stress and low equivalent plastic strain. Such a surface roughness and equivalent stress and plastic strain correlation has a clear implication to the design and the surface quality of sheet parts made by SPIF.

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A model predictive path control algorithm of single-point incremental forming for non-convex shapes

Cited by 14 publications

References 26 publications

Three pass incremental sheet forming: A new strategy for the manufacture of brass musical instruments

Three pass incremental sheet forming: A new strategy for the manufacture of brass musical instruments

Achieving Accuracy Improvements for Single-Point Incremental Forming Process Using a Circumferential Hammering Tool

Surface roughness analysis of medical grade titanium sheets formed by single point incremental forming

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