Robot assisted incremental sheet forming of Al6061 under static pressure: Preliminary study of thickness distribution within the deformation region

Singh, Ravi Prakash; Gupta, Sandeep; Singh, Pankaj Kumar; Kumar, Santosh

doi:10.1016/j.matpr.2021.03.056

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…The thickness plot for CISF and WISF is given in Figure 17c. The green line shows the thickness predicted by the sine law for spinning (t = t0 sin θ) [37]. It can be seen from Table 9 that the average sheet thickness in the case of CISF was more than that in WISF; however, the distribution of sheet thickness in the middle region of the cone was more uniform in the case of WISF.…”

Section: Thickness Distributionmentioning

confidence: 96%

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Robot-Assisted Cold and Warm Incremental Sheet Forming of Aluminum Alloy 6061: A Comparative Study

Singh

Kumar

Pande

et al. 2023

Metals

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Incremental sheet forming (ISF) requires no or partial dies for sheet metal fabrication and is widely used for small batch production. In this process, necking is either suppressed or delayed due to the localized nature of tool–sheet contact; hence, more strains than conventional stamping and deep drawing are obtained. In the present study, two variations of ISF, namely cold ISF (CISF) and warm ISF (WISF), are compared. First, FEA modeling is carried out on ABAQUS to reach the forming forces involved in the process. It is found that WISF reduces the forming forces. The temperature for WISF is maintained at 180 °C. Following the simulation analysis, tests are carried out. The forming force in WISF is 55.77% less than that in CISF. The part fabricated by CISF is slightly more substantial than that by WISF; however, more forming depth can be achieved by WISF. There is a more uniform thickness distribution in the case of CISF than in WISF. However, the surface quality of the CISF product is inferior to that of WISF. It is observed that there is reduced forming force, increased formability, and better strain distribution in WISF compared to CISF. However, post-processing heat treatment and surface polishing of the formed parts is required to restore their mechanical properties.

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Section: Thickness Distributionmentioning

confidence: 96%

“…The thickness plot for CISF and WISF is given in Figure 17c. The green line shows the thickness predicted by the sine law for spinning (t = t0 sin θ) [37].…”

Section: Thickness Distributionmentioning

confidence: 99%

Robot-Assisted Cold and Warm Incremental Sheet Forming of Aluminum Alloy 6061: A Comparative Study

Singh

Kumar

Pande

et al. 2023

Metals

Self Cite

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show abstract

“…Compared to conventional sheet formation processes, in SPIF the necessary conformation force is reduced due to localized and successive deformations that occur during the process [5]. Nevertheless, it is fundamental to be able to predict the acting forces during the process to select the equipment that will be used, such as a CNC milling machine [6][7][8], a CNC lathe [9][10][11], a robotic arm [12][13][14], or a machine designed for this purpose [15,16].…”

Section: Introductionmentioning

confidence: 99%

Predicting maximum force in SPIF for different materials

et al. 2022

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Knowing the importance of predicting acting forces during the formation process, our research has conducted 27 Single Point Incremental Forming (SPIF) experiments in hyperboloid format, followed by Finite Element Method (FEM) simulations and regression equations were determined to estimate the maximum axial force in the process. ANOVA analysis of variance was used to determine the significance of material parameters in the maximum axial force response. A multiple linear regression model was constructed to estimate the maximum axial force in the SPIF process. After the experiments, we were able to identify that the maximum axial force increases according to an increase in tool radius, sheet initial thickness, and strength coefficient values, as well as according to the decrease in the strain-hardening exponent. The FEM simulations are in agreement with the experimental values found, and the linear regression model has proven to be efficient to describe results, with R2 of 98.85% and a maximum percentage error of 11.5%.

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Experimental Investigation of Multi-stage Robot-Assisted Single Point Incremental Sheet Forming of Al 6061 Sheet

Singh

Kumar

Singh

et al. 2022

Advances in Forming, Machining and Automation

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Robot assisted incremental sheet forming of Al6061 under static pressure: Preliminary study of thickness distribution within the deformation region

Cited by 9 publications

References 8 publications

Robot-Assisted Cold and Warm Incremental Sheet Forming of Aluminum Alloy 6061: A Comparative Study

Robot-Assisted Cold and Warm Incremental Sheet Forming of Aluminum Alloy 6061: A Comparative Study

Predicting maximum force in SPIF for different materials

Experimental Investigation of Multi-stage Robot-Assisted Single Point Incremental Sheet Forming of Al 6061 Sheet

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