Shape and dimensional accuracy in Single Point Incremental Forming: State of the art and future trends

Micari, F.; Ambrogio, Giuseppina; Filice, Luigino

doi:10.1016/j.jmatprotec.2007.03.066

Cited by 221 publications

(134 citation statements)

References 21 publications

(22 reference statements)

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“…The modifications that have been made to conventional sheet metal forming such as spinning and shear forming were described by Jeswiet et al [8], and it was focused on an asymmetric single-point incremental forming (AISF), which provided a valuable guideline for designers and manufacturers. Micari et al [9] discussed some relevant issues concerning SPIF. It was recognized that the geometrical accuracy is considered one key weakness of SPIF, which may be compensated for by tool path optimization.…”

Section: Introductionmentioning

confidence: 99%

“…The advantages that allow ISF to be developed as a viable solution for sheet metal products can be listed as follows: [14] -The setup costs can be largely neglected [9] -ISF is a highly flexible process, and it is possible to simply modify the machine part program so that the product shape is changed [17]. -Due to the stress state induced during tool movement, the formability is greater than that of traditional stamping [9].…”

Section: Introductionmentioning

confidence: 99%

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Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

157

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Incremental sheet forming (ISF) is a relatively new flexible forming process. ISF has excellent adaptability to conventional milling machines and requires minimum use of complex tooling, dies and forming press, which makes the process cost-effective and easy to automate for various applications. In the past two decades, extensive research on ISF has resulted in significant advances being made in fundamental understanding and development of new processing and tooling solutions. However, ISF has yet to be fully implemented to mainstream high-value manufacturing industries due to a number of technical challenges, all of which are directly related to ISF process parameters. This paper aims to provide a detailed review of the current state-of-the-art of ISF processes in terms of its technological capabilities and specific limitations with discussions on the ISF process parameters and their effects on ISF processes. Particular attention is given to the ISF process parameters on the formability, deformation and failure mechanics, springback and accuracy and surface roughness. This leads to a number of recommendations that are considered essential for future research effort.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

157

View full text Add to dashboard Cite

show abstract

“…The workpiece was held by a moving table under the press of a rotating forming tool. This method is also studied by Kopac and Campus (2005), Kim and Park (2003), Ceretti et al (2004), Micari et al (2007), Ham and Jeswiet (2007), Silva et al (2009) and Ambrogio et al (2009). Allwood et al (2009) designed a close-loop system by integrated a vision system into the CNC ISMF system.…”

Section: Introductionmentioning

confidence: 94%

A New Rapid Prototyping Process for Sheet Metal Parts

Luo¹,

He²,

Du³

2011

Rapid Prototyping Technology - Principles and Functional Requirements

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“…Likewise, the work of Behera et al [16,19] was limited to studies on planar and ruled features and aluminum and low carbon steel alloys. Micari et al [20] and Essa et al [21] outlined various process strategies to improve accuracy in incremental forming. An in-process online correction strategy was laid out by Rauch et al [22] which was limited to correcting the depth accuracy of the parts.…”

Section: Introductionmentioning

confidence: 99%

Characterization of shape and dimensional accuracy of incrementally formed titanium sheet parts with intermediate curvatures between two feature types

Behera

Lü

2015

Int J Adv Manuf Technol

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Single point incremental forming (SPIF) is a relatively new manufacturing process that has been recently used to form medical grade titanium sheets for implant devices. However, one limitation of the SPIF process may be characterized by dimensional inaccuracies of the final part as compared with the original designed part model. Elimination of these inaccuracies is critical to forming medical implants to meet required tolerances. Prior work on accuracy characterization has shown that feature behavior is important in predicting accuracy. In this study, a set of basic geometric shapes consisting of ruled and freeform features were formed using SPIF to characterize the dimensional inaccuracies of grade 1 titanium sheet parts. Response surface functions using multivariate adaptive regression splines (MARS) are then generated to model the deviations at individual vertices of the STL model of the part as a function of geometric shape parameters such as curvature, depth, distance to feature borders, wall angle, etc. The generated response functions are further used to predict dimensional deviations in a specific clinical implant case where the curvatures in the part lie between that of ruled features and freeform features. It is shown that a mixed-MARS response surface model using a weighted average of the ruled and freeform surface models can be used for such a case to improve the mean prediction accuracy within ±0.5 mm. The predicted deviations show a reasonable match with the actual formed shape for the implant case and are used to generate optimized tool paths for minimized shape and dimensional inaccuracy. Further, an implant part is then made using the accuracy characterization functions for improved accuracy. The results show an improvement in shape and dimensional accuracy of incrementally formed titanium medical implants.

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Shape and dimensional accuracy in Single Point Incremental Forming: State of the art and future trends

Cited by 221 publications

References 21 publications

Review on the influence of process parameters in incremental sheet forming

Review on the influence of process parameters in incremental sheet forming

A New Rapid Prototyping Process for Sheet Metal Parts

Characterization of shape and dimensional accuracy of incrementally formed titanium sheet parts with intermediate curvatures between two feature types

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