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.

Modeling Force Fluctuations in Incremental Sheet Forming

2020 ◽  
Author(s):  
Michael Prize ◽  
Douglas Bristow ◽  
Robert Landers
Keyword(s):  
Process Parameters ◽  
Tool Path ◽  
Single Point ◽  
Reaction Force ◽  
Three Dimensional ◽  
Geometric Error ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Forming Force ◽  
Manufacturing Method

Abstract Incremental Sheet Forming (ISF) is a versatile manufacturing method in which a three-dimensional part is fabricated by progressively deforming a metal sheet. This is typically done via a robot with a single point tool following a defined trajectory. During this process a reaction force between the forming tool and sheet is generated. This force, denoted the forming force and defined as the force acting perpendicular to the sheet, has been modeled in several studies. Given a part with homogenous material, a fixed part geometry, and constant process parameters, these models predict the forming force will be constant. However, many studies have shown that this force fluctuates during the process. This paper augments the model by accounting for changes in process parameters due to robot geometric errors to describe these fluctuations. The model is experimentally validated, and the fluctuations of the forming force are reduced by 51% by modifying the tool path based on the identified robot geometric error.

Investigation on the forming force and surface quality during ultrasonic-assisted incremental sheet forming process

2020 ◽  
Vol 106 (7-8) ◽  
pp. 2703-2719 ◽  
Author(s):  
Weidong Zhai ◽  
Yanle Li ◽  
Zinan Cheng ◽  
Lingling Sun ◽  
Fangyi Li ◽  
...  
Keyword(s):  
Surface Quality ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Forming Force ◽  
Forming Process ◽  
Ultrasonic Assisted

Multiobjective optimization of process variables in single-point incremental forming using grey relational analysis coupled with entropy weights

2021 ◽  
pp. 146442072110204
Author(s):  
Abdulmajeed Dabwan ◽  
Adham E Ragab ◽  
Mohamed A Saleh ◽  
Atef M Ghaleb ◽  
Mohamed Z Ramadan ◽  
...  
Keyword(s):  
Grey Relational Analysis ◽  
Incremental Forming ◽  
Single Point ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Numerical Control ◽  
Single Point Incremental Forming ◽  
Process Variables ◽  
Relational Analysis ◽  
Grey Relational

Incremental sheet forming is a specific group of sheet forming methods that enable the manufacture of complex parts utilizing computer numerical control instead of specialized tools. It is an incredibly adaptable operation that involves minimal usage of sophisticated tools, dies, and forming presses. Besides its main application in the field of rapid prototyping, incremental sheet forming processes can be used for the manufacture of unique parts in small batches. The goal of this study is to broaden the knowledge of the deformation process in single-point incremental forming. This work studies the deformation behavior in single-point incremental forming by experimentally investigating the principal stresses, principal strains, and thinning of single-point incremental forming products. Conical-shaped components are fabricated using AA1050-H14 aluminum alloy at various combinations of fundamental variables. The factorial design is employed to plan the experimental study and analysis of variance is conducted to analyze the results. The grey relational analysis approach coupled with entropy weights is also implemented to identify optimum process variables for single-point incremental forming. The results show that the tool diameter has the greatest effect on the thinning of the SPIF product, followed by the sheet thickness, step size, and feed rate.

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