Continuous flexible roll forming for three-dimensional surface part and the forming process control

Cai, Zhongyi; Sui, Zhen; Cai, Fu-Xi; Liu, Lin

doi:10.1007/s00170-012-4333-7

Cited by 29 publications

(6 citation statements)

References 14 publications

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“…The manufacturing process of the doubly curved plate is usually carried out manually by skilled craftsmen by using gas torches. A multi-point forming process for producing a doubly curved plate was proposed [26,214]. Reconfigurable multi point tools were employed to approximate the upper and lower solid dies.…”

Section: Incremental Profile Forming By Flexible Roll Movementsmentioning

confidence: 99%

Flexibility in metal forming

et al. 2018

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Flexibility in metal forming is needed more than ever before due to rapidly changing customer demands. It paves the way for a better control of uncertainties in development and application of metal forming processes. Although flexibility has been pursued from various viewpoints in terms of machines, material, process, working environment and properties, etc., a thorough study of the concept was undertaken in order to with problems of manufacturing competiveness and tackle new challenges of manufacturing surroundings. Therefore, in this paper, flexibility in forming is reviewed from the viewpoints of process, material, manufacturing environment, new process combinations and machine-systemsoftware interactions.

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Section: Incremental Profile Forming By Flexible Roll Movementsmentioning

confidence: 99%

Flexibility in metal forming

et al. 2018

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“…The transverse and longitudinal curvature radii of the target parts are R T and R L respectively. The function of neutral axis is denoted as g(y) (as shown in (1)), and the function of roll gap distribution is expressed as h(y) (as shown in (3) and (4)), where the y-axis is in the direction perpendicular to the rolling direction and z-axis is the thickness direction of the parts [10].…”

Section: Principle Of Continuous Roll Formingmentioning

confidence: 99%

Shape Error Analysis on the Three-dimensional Surface Part in Continuous Roll Forming

Sun¹,

Yan

Chen³

2017

Proceedings of the 2017 International Conference on Information Technology and Intelligent Manufacturing (ITIM 2017)

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Abstract-Continuous roll forming (CRF) is a new type of flexible forming technology, which can produce threedimensional surface parts with different curvatures by adjusting a pair of bendable rolls and the distribution of roll gap. In this paper, shape error analysis on the three-dimensional surface part is studied, and the comparison of transverse and longitudinal curvature radii of convex surfaces is expressed. The results show shapes of convex curved surface parts are uniform, while larger curvature is obtained on both sides. Furthermore, the shape error of three-dimensional surface part decreases from the center to the edges, and the radius of formed part is closed to the target radius in the middle area. In addition, the experiments of convex curved surface parts are carried out, and the experimental results show the validity of the simulation results.

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“…Nowadays, flexible roll forming technology has been applied in many fields. Zhong [4] researched the flexible roll forming process and established carbon fiber composite process control software. Joo [5] proposed a profile design method for manufacturing variable section parts by flexible forming process.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of Five‐Point Bending and Springback for Preforming Process of ERW Pipe FFX Forming

Liu

et al. 2019

Mathematical Problems in Engineering

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Flexible forming excellent (FFX) forming of electric resistance welding (ERW) pipe is an advanced roll forming method. In order to understand FFX forming mechanism and set reasonable roll parameters, five-point bending process and springback process for preforming section of ERW pipe FFX forming are analyzed. Under various assumptions, the bending process of sheet metal is divided into full elastic bending stage and elastic-plastic bending stage by analyzing the forming law and simplifying the contact state model of roll bending process. Based on the theory of plane bending theory, the five-point bending springback model is established. Mathematical expressions of bending curvature and rotation angle of arbitrary particle on plate under arbitrary state are derived. The curvature calculation formulas of each particle on plate after springback are obtained, and then the calculation formulas of bending angle and rebound angle after springback are obtained. The theoretical analysis results are verified by the wide plate five-point bending experiment. The theoretical value of springback angle agrees well with the experimental results. The maximum deviation of springback angle is 0.42 degrees. The results show that the five-point bending model is reasonable. It provides theoretical support for the preforming model of flexible roll forming.

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Continuous flexible roll forming for three-dimensional surface part and the forming process control

Cited by 29 publications

References 14 publications

Flexibility in metal forming

Flexibility in metal forming

Shape Error Analysis on the Three-dimensional Surface Part in Continuous Roll Forming

Theoretical Analysis of Five‐Point Bending and Springback for Preforming Process of ERW Pipe FFX Forming

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