scholarly journals Experimental investigations and optimization of forming force in incremental sheet forming

Sadhana ◽  
2018 ◽  
Vol 43 (10) ◽  
Author(s):  
AJAY KUMAR ◽  
VISHAL GULATI
Keyword(s):  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Experimental Investigations ◽  
Forming Force

A Novel Electromagnetic Fixture for Incremental Sheet Metal Forming

2019 ◽  
Vol 141 (3) ◽  
Author(s):  
Harish K. Nirala ◽  
Anupam Agrawal
Keyword(s):  
Single Point ◽  
Vital Role ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Experimental Investigations ◽  
Slow Process ◽  
Incremental Sheet Metal Forming ◽  
Set Up ◽  
Localized Plastic Deformation ◽  
Process Speed

Single-point incremental sheet forming (SPISF) is a promising die-less forming technique. It has a variety of applications in many industries, viz., automobile, aerospace, and bone transplants. In SPISF, a sheet of metal is deformed by using numerically controlled single-point, hemispherical end-shaped forming tool, which incrementally deforms the sheet with highly localized plastic deformation. SPISF is a flexible yet relatively slow process when compared with conventional forming techniques like deep drawing and spinning. Since the beginning of die-less forming technology, researchers are recommending it for small batch production system or for customized fabrication. Being a slow process, it still has not achieved wide industrial acceptability. Among several key parameters dictating the process speed, the sheet clamping mechanism is one of the significant parameters of SPISF. Clamping mechanism plays a vital role in its manufacturing lead time. However, research efforts in this direction have been largely neglected. In this investigation, to improve the process speed, a novel electromagnetic clamping mechanism for SPISF is proposed. Detailed numerical and experimental investigations have been carried out to set up its applicability for the SPISF process. From the available literature, it has been found that this type of clamping mechanism in SPISF has not been studied or investigated. The proposed electromagnetic clamping makes the process of sheet clamping faster and convenient, and provides one-click clamping solution. This concept can take the process of incremental sheet forming toward better industrial acceptability. Furthermore, SPISF of symmetric and asymmetric components is conducted to test the feasibility of the concept.

Experimental Investigations and Numerical Analysis for Improving Knowledge of Incremental Sheet Forming Process for Sheet Metal Parts

2009 ◽  
Vol 623 ◽  
pp. 37-48 ◽  
Author(s):  
Steeve Dejardin ◽  
Jean Claude Gelin ◽  
Sebastien Thibaud
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Single Point ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Experimental Investigations ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Forming Strategy ◽  
Set Up

The paper is related to the analysis of shape distortions and springback effects arising in Single Point Incremental Forming. An experimental set up has been designed and manufactured to carry single point incremental forming on small size sheet metal parts. The experimental set up is mounted on 3-axes CNC milling machine tool and the forming tool is attached and move with the spindle. Experiments have been carried out on sheet metal parts to obtain tronconical shapes. The forming strategy associated to the movement of the forming tool has been also investigated. The experiments indicate that shape distortions arising in the corners of the tronconical shape are clearly related to forming strategy. The springback of rings cut in the tronconical parts have been also investigated. It is shown that positive or negative springback could be also related to forming strategy. In order to enhance experimental investigations, Finite Element simulations of the incremental sheet forming have been performed. Results obtained from the simulations prove that if boundary conditions and forming strategy carefully are taking into account, the finite elements results are in good agreement with experiments. So it is then possible to use FEM as a design tool for incremental sheet forming.

Formability and forming force in incremental sheet forming of AA7075-T6 at different temperatures

2019 ◽  
Vol 33 (8) ◽  
pp. 3795-3802 ◽  
Author(s):  
Xiao Xiao ◽  
Chan-Il Kim ◽  
Xiao-Dong Lv ◽  
Tae-Seog Hwang ◽  
Young-Suk Kim
Keyword(s):  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Forming Force ◽  
Different Temperatures

A Brief Review of Forming Forces in Incremental Sheet Forming

2016 ◽  
Vol 861 ◽  
pp. 195-200
Author(s):  
Yan Le Li ◽  
Jie Sun ◽  
Jian Feng Li
Keyword(s):  
Potential Role ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Current Status ◽  
Forming Force ◽  
Forming Process ◽  
Contact Conditions ◽  
Process Failure ◽  
On Line ◽  
Deformation Mechanics

Investigation of forming forces in incremental sheet forming (ISF) is of great importance since it provides understanding of the deformation mechanics, monitoring of the forming process, failure prediction, and future means of on-line control and optimization. This paper provides a review of studies on the contact conditions and the effects of the process parameters on forming forces in ISF, followed by the current status on forming force prediction and its potential role in the improvement of ISF technology.

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