The effect of tooling design parameters on web-warping in the flexible roll forming of UHSS

2013 ◽  
Author(s):  
Jingsi Jiao ◽  
Bernard Rolfe ◽  
Joseba Mendiguren ◽  
Lander Galdos ◽  
Matthias Weiss
Keyword(s):  
Roll Forming ◽  
Design Parameters ◽  
Flexible Roll Forming ◽  
Flexible Roll ◽  
Tooling Design ◽  
Web Warping

Application of Support Vector Regression and Genetic Algorithm to Reduce Web Warping in Flexible Roll-Forming Process

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
Young Yun Woo ◽  
Dae-Cheol Ko ◽  
Taekyung Lee ◽  
Yangjin Kim ◽  
Ji Hoon Kim ◽  
...  
Keyword(s):  
Process Parameters ◽  
Optimization Method ◽  
Roll Forming ◽  
Support Vector ◽  
Forming Process ◽  
Flexible Roll Forming ◽  
Flexible Roll ◽  
Roll Forming Process ◽  
Web Warping ◽  
The Web

Abstract In a flexible roll-forming process, a metal blank is incrementally deformed into the desired shape with a variable cross-sectional profile by passing the blank through a series of forming rolls. Because of the combined effects of process and material parameters on the quality of the roll-formed product, the approaches used to optimize the roll-forming process have been largely based on experience and trial-and-error methods. Web warping is one of the major shape defects encountered in flexible roll forming. In this study, an optimization method was developed using support vector regression (SVR) and a genetic algorithm (GA) to reduce web warping in flexible roll forming. An SVR model was developed to predict the web-warping height, and a response surface method was used to investigate the effect of the process parameters. In the development of these predictive models, three process parameters—the forming-roll speed condition, leveling-roll height, and bend angle—were considered as the model inputs, and the web-warping height was used as the response variable. The GA used the web-warping height and the cost of the roll-forming system as the fitness function to optimize the process parameters of the flexible roll-forming process. When the flexible roll-forming process was carried out using the optimized process parameters, the obtained experimental results indicated a reduction in web warping. Hence, the feasibility of the proposed optimization method was confirmed.

An analytical model for web-warping in variable width flexible roll forming

2016 ◽  
Vol 86 (5-8) ◽  
pp. 1541-1555 ◽  
Author(s):  
Jingsi Jiao ◽  
Bernard Rolfe ◽  
Joseba Mendiguren ◽  
Matthias Weiss
Keyword(s):  
Analytical Model ◽  
Roll Forming ◽  
Flexible Roll Forming ◽  
Flexible Roll ◽  
Web Warping

Modeling and Simulation of Continuous Flexible Roll Forming Process

2013 ◽  
Vol 365-366 ◽  
pp. 549-552
Author(s):  
Zhou Sui ◽  
Zhong Yi Cai ◽  
Ming Zhe Li
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Three Dimensional ◽  
Rigid Bodies ◽  
Roll Forming ◽  
Forming Process ◽  
Flexible Roll Forming ◽  
Flexible Roll ◽  
Roll Forming Process

The continuous flexible roll forming process is a novel sheet metal forming technique for effectively manufacture of three-dimensional surface parts. In this study, two types of finite element (FE) models were developed under the ABAQUS/Explicit environment. The difference of the two models is that the rolls are defined as discrete rigid bodies in model No.1 and are deformable in model No.2. An experiment was carried out using the continuous sheet metal forming setup. The comparison of the numerical computation results with the experimental results shows that the model No.2 can be used for the shape prediction of continuous flexible roll forming process well.

scholarly journals Flange Wrinkling in Flexible Roll Forming Process

2014 ◽  
Vol 81 ◽  
pp. 245-250 ◽  
Author(s):  
Mohammad Mehdi Kasaei ◽  
Hassan Moslemi Naeini ◽  
Behnam Abbaszadeh ◽  
Mehran Mohammadi ◽  
Mojtaba Ghodsi ◽  
...  
Keyword(s):  
Roll Forming ◽  
Forming Process ◽  
Flexible Roll Forming ◽  
Flexible Roll ◽  
Flange Wrinkling ◽  
Roll Forming Process

Analysis of Flexible Roll Forming Process with Arc Shape Panel

2015 ◽  
Vol 799-800 ◽  
pp. 439-442
Author(s):  
Ya Zhang ◽  
Dae Hwan Yoon ◽  
Dong Won Jung
Keyword(s):  
Cross Sections ◽  
High Strength ◽  
Variable Cross Section ◽  
Roll Forming ◽  
Variable Cross ◽  
Transportation Engineering ◽  
Forming Process ◽  
Flexible Roll Forming ◽  
Flexible Roll ◽  
Arc Shape

Roll forming is a highly useful and important forming technique for sheet metal. As an economic profile product, roll forming products are widely used in transportation, engineering machinery, and civil construction because of their uniform sections, high strength, and low energy consumption[1]. Roll forming is a rapid processing operation used for transforming flat sheets of material into useful profiled sections. However, a lot of components used in the automobile, railway cars, ship construction, and building industries have variable cross sections. Therefore, flexible roll forming was developed recently to produce variable cross section profiles.

A Flexible Roll Forming on-Line Detection Algorithm Based on Machine Vision

2012 ◽  
Vol 457-458 ◽  
pp. 287-292 ◽  
Author(s):  
Xu Peng Li ◽  
Bo Qian ◽  
Qiang Li
Keyword(s):  
Control System ◽  
Machine Vision ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Detection Algorithm ◽  
Roll Forming ◽  
Loop Control ◽  
Flexible Roll Forming ◽  
Flexible Roll

For the flexible roll forming of the control system, this paper introduces a method that machine vision bind to the flexible roll forming control system. The detection method for sheet metal forming is image acquisition, image processing and other means for the extraction of sheet metal forming in some time section contour curve. Compare extraction section contour curve with the moment theory section contour curve in the control system, get the deviation value and feedback to the control system that interpolation arithmetic to realize closed loop control.

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