Bending force and spring-back in v-die-bending of perforated sheet-metal components

Farsi, Mohammad Ali; Arezoo, Behrooz

doi:10.1590/s1678-58782011000100007

Cited by 33 publications

(18 citation statements)

References 9 publications

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“…For punch radii of 5 mm, 8 mm, 9.5 mm and 12.5 mm the values of springback were 5.20 o , 6.3 o , 7.6 o and 8.8 o , respectively. Similar observations were made by [17] and [18] who reported their studies on the effect of punch radius on springback. The springback depends on the size of the plastic zone.…”

Section: Resultssupporting

confidence: 86%

Effect of Die and Punch Radius on Springback of Stainless Steel Sheet Metal in the Air v-Die Bending Process

Buang¹,

Abdullah²,

Saedon³

2015

J. Mech. Eng. Sci.

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This paper focuses on the effect of the die and punch radii on the springback in the air V-die free bending process of stainless steel sheet metal. The experiment was performed on sheet metal using various die and punch radius values while their springback behavior was observed. The design of experiment approach was used in these experiments using the full factorial and analysis of variance methods to identify whether or not the die and punch radii are significant input parameters in predicting springback. From the statistical analysis, it shows that the die and punch radius parameters are significant factors contributing to the springback effect in the V-die bending of stainless steel sheet metal at the significance level of 0.05 because their p value is less than 0.05. The results from the experiments showed that springback is affected by the die and punch radius values in the air V-bending experiments. From this analysis, it can be concluded that the springback values can be decreased by decreasing the values of the die and punch radii. In the air V-die bending process, the punch radius is the most important factor to be considered. The experimental method agreed well with the design of experiment results.

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Section: Resultssupporting

confidence: 86%

Effect of Die and Punch Radius on Springback of Stainless Steel Sheet Metal in the Air v-Die Bending Process

Buang¹,

Abdullah²,

Saedon³

2015

J. Mech. Eng. Sci.

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“…So, bending moment, which depends on parameters like material properties and the die geometry etc., is directly affecting the bending force. An analytical approach cannot correctly estimate bending moment during air bending [8][9][10]. Thus, tool designers use the easy equation (1).…”

Section: Effect Of Tooling Parameters On Bending Force In Air Bending Of Cr4 Steel 377mentioning

confidence: 99%

Effect of Tooling Parameters on Bending Force in Air Bending of CR4 steel

Gupta¹,

Payal²

2017

International Journal of Theoretical and Applied Mechanics

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This study attempts to investigate the effect of process variables like the geometry of die and punch, the orientation of sheet metal and punch speed on bending force in air bending of CR4 steel, by varying one parameter at a time approach. Experiments were conducted using different combinations of sheet orientations, punch velocity, punch radius, die width, and die radius keeping sheet metal blank size constant. Universal Testing Machine was used at different speeds. Effect of parameters that is bending force has been analyzed graphically. The increase of bending force was observed due to an increase of punch radius, and punch speed. Whereas bending force was decreasing due to an increase of die width, and die radius. By changing the orientation of steel sheet from longitudinal to transverse, bending force was increasing. It was observed that the bending force follows polynomial equation of 2nd order by curve fitting method. The results will be useful as a guideline for tool design engineers and press shop engineers in the sheet metal forming industry

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“…The study showed that bend force is influenced to a greater extent by punch travel followed by punch radius and punch velocity. Farsi and Arezoo [9] studied the bend force in V-bending of perforated sheets and found that increasing die width and decreasing punch radius decrease the bend force. Srinivasan et al [10] conducted air V-bending experiments on electrogalvanised steel sheets to investigate the effect of various parameters on bend force behaviour.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on bending behaviour of aluminium-copper clad sheets in V-bending process

Srinivasan

Raja

2019

Mechanics & Industry

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The bimetallic sheets are used in the industrial sheet metal products to meet the demands of multifunctionality. The bending behaviour of bimetallic sheet is contributed by individual layers of the sheet and it is entirely different from the monolithic material. In this study, V-bending experiments are carried out to understand the springback, bend force and thickness change of Al-Cu clad sheets. The effect of different parameters such as sheet thickness, sheet setting condition, die angle, die opening and punch radius have been investigated. The results indicated that springback is more for smaller die angle, wider die opening and larger punch radius. Increase in die angle, increase in die opening or decrease in punch radius decreases the bend force. The clad sheet thickens at Al/Cu setting condition whereas it thins at Cu/Al setting condition. This thinning or thickening of the sheet influences the springback and bend force.

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Bending force and spring-back in v-die-bending of perforated sheet-metal components

Cited by 33 publications

References 9 publications

Effect of Die and Punch Radius on Springback of Stainless Steel Sheet Metal in the Air v-Die Bending Process

Effect of Die and Punch Radius on Springback of Stainless Steel Sheet Metal in the Air v-Die Bending Process

Effect of Tooling Parameters on Bending Force in Air Bending of CR4 steel

Experimental study on bending behaviour of aluminium-copper clad sheets in V-bending process

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