Dominant deformation mechanisms in single point incremental forming (SPIF) and their effect on geometrical accuracy

Maqbool, Fawad; Bambach�, Markus

doi:10.1016/j.ijmecsci.2017.12.053

Cited by 78 publications

(41 citation statements)

References 30 publications

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“…These results coincide with those obtained by Hussain, Lin & Hayat [48] (greater pitches provoke greater deviations), Maqbool & Bambach [49] (lower pitches provoke lower geometrical accuracy) and Radu & Cristea [50] (high values of the feed-rate lead to a low-dimensional accuracy).…”

supporting

confidence: 90%

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

et al. 2018

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Featured Application: In this work we propose a method for deforming a pre-coated metal sheet via SPIF. The influence of the pitch and feed-rate on the dimensional precision has been studied. This work is of interest for companies dedicated to the manufacture of molds for the agri-food sector, which can directly manufacture prototypes or short series by this system. Abstract:The process of single point incremental formation (SPIF) awakens interest in the industry of mold manufacturing for the food industry. By means of SPIF, it is possible to generate short series of molds or mold prototypes at low cost. However, these industries require such molds to be functional (non-sticky) and to have an adequate geometry accuracy. This study presents a technique that enables direct manufacturing of molds from pre-coated sheets with non-stick resins. It has also studied the influence of two technological variables in the process (feed-rate and pitch) for different geometrical parameters of the mold. Low values of these variables result in a lower overall error in the profile obtained. However, in order to obtain greater detail in particular parameters (angles, depth), it is necessary to use higher values of feed-rate and pitch.

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confidence: 90%

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

et al. 2018

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“…The mechanism of strain hardening is enhanced by the increase in density of the dislocations. On the other hand, dislocations are needed to produce the lattice rotation, and at the same time the remaining dislocation will increase the residual stresses [16]. The intensity and distribution of the residual stresses are controlled by the underlying plastic deformation mechanisms of the forming process, i.e., bending, stretching and through-thickness shear [16].…”

Section: Residual Stressesmentioning

confidence: 99%

“…On the other hand, dislocations are needed to produce the lattice rotation, and at the same time the remaining dislocation will increase the residual stresses [16]. The intensity and distribution of the residual stresses are controlled by the underlying plastic deformation mechanisms of the forming process, i.e., bending, stretching and through-thickness shear [16]. As Tanaka et al [24] concluded, the higher the contribution of bending deformation, the more pronounced will be the geometric deviations.…”

Section: Residual Stressesmentioning

confidence: 99%

“…A detailed review of the current state-of-the-art of ISF processes in terms of its technological capabilities and discussions on the ISF process parameters and their effects on ISF processes may be found in the works of Gatea et al [15] and Behera et al [8]. Maqbool and Bambach [16] quantified the respective contribution of each forming mechanism (i.e., bending, membrane stretching, through-thickness shear) involved in the SPIF process and the dependence of geometrical accuracy on the dominant deformation mechanism. The practical consequence of the mode of deformation on the geometrical accuracy of pyramid-shaped parts has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…The combination of tensile residual stresses with service stresses adversely affects the fatigue life of the components, whereas compressive residual stresses are beneficial in improving the fatigue life of formed components [17][18][19]. An increase in the geometrical accuracy is achieved due to the decreased contribution of the bending deformation mode and lower residual moment [16]. A better understanding of the residual stresses is necessary to increase the geometrical accuracy of incrementally formed parts.…”

Section: Introductionmentioning

confidence: 99%

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Residual Stresses and Surface Roughness Analysis of Truncated Cones of Steel Sheet Made by Single Point Incremental Forming

Slota

Krasowski

Kubit

et al. 2020

Metals

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The dimensional accuracy and mechanical properties of metal components formed by the Single Point Incremental Forming (SPIF) process are greatly affected by the prevailing state of residual stress. An X-ray diffraction method has been applied to achieve an understanding of the residual stress formation caused by the SPIF process of deep drawing a quality steel sheet drawpiece. The test object for an analysis of residual stress distribution was a conical truncated drawpiece with a slope angle of 71 • and base diameter of the cone of 65 mm. The forming process has been carried out on a 3-axis HAAS TM1P milling machine. Uniaxial tensile tests have been carried out in the universal tensile testing machine to characterize the material tested. It was found that the inner surface of the drawpiece revealed small linear grooves as a result of the interaction of the tool tip with the workpiece. By contrast, the outer surface was free of grooves which are a source of premature cracking. The stress profile exhibits a nonlinear distribution due to different strengthening of the material along the generating line of the truncated conical drawpiece. The SPIF parts experienced a maximum residual stress value of about 84.5 MPa.

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On the Geometrical Accuracy in Incremental Sheet Forming

et al. 2021

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Dominant deformation mechanisms in single point incremental forming (SPIF) and their effect on geometrical accuracy

Cited by 78 publications

References 30 publications

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

Residual Stresses and Surface Roughness Analysis of Truncated Cones of Steel Sheet Made by Single Point Incremental Forming

On the Geometrical Accuracy in Incremental Sheet Forming

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