scholarly journals Investigation on Forming Precision of Flexible Rolling Process for Three-dimensional Surface Parts of Different Sheet Materials

2014 ◽  
Vol 81 ◽  
pp. 227-232 ◽  
Author(s):  
Daming Wang ◽  
Mingzhe Li ◽  
Zhongyi Cai
Keyword(s):  
Three Dimensional ◽  
Rolling Process ◽  
Flexible Rolling ◽  
Sheet Materials ◽  
Forming Precision ◽  
Dimensional Surface

Research on Transition Zones of Spherical Surface Parts in 3D Rolling Process

2014 ◽  
Vol 687-691 ◽  
pp. 3-6
Author(s):  
Da Ming Wang ◽  
Ming Zhe Li ◽  
Zhong Yi Cai
Keyword(s):  
Sheet Metal ◽  
Spherical Surface ◽  
Three Dimensional ◽  
Rolling Process ◽  
Experimental Results ◽  
Transition Zones ◽  
Spherical Surfaces ◽  
Sheet Width ◽  
Forming Precision ◽  
Roll Gap

3D rolling is a novel technology for three-dimensional surface parts. In this process, by controlling the gap between the upper and lower forming rolls, the sheet metal is non-uniformly thinned in thickness direction, and the longitudinal elongation of the sheet metal is different along the transverse direction, which makes the sheet metal generate three-dimensional deformation. In this paper, the transition zones of spherical surface parts in 3D rolling process are investigated. Spherical surface parts with the same widths but different lengths are simulated in condition of the same roll gap, and their experimental results are presented. The forming precision of forming parts and the causes of transition zones in the head and tail regions are analyzed through simulated results. The simulated and experimental results show that the lengths of transition zones of spherical surfaces in the head and tail regions are fixed values in condition of the same sheet width and roll gap.

Development of Flexible Rolling Device for 3D Plate

2012 ◽  
Vol 271-272 ◽  
pp. 852-857
Author(s):  
Ren Jun Li ◽  
Ming Zhe Li ◽  
Ning Jia Qiu
Keyword(s):  
Research And Development ◽  
Sheet Metal ◽  
Three Dimensional ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Flexible Rolling ◽  
Design Scheme ◽  
Working Principle ◽  
Conventional Rolling ◽  
Dimensional Surface

To effectively form three-dimensional sheet metal parts with various curvatures produced in small quantities, flexible rolling forming, a new flexible forming method is being developed. Firstly, concept of the flexible rolling forming is introduced and its characteristics and working principle are analyzed by the combination of conventional rolling and multi-point forming. Secondly, the equipment design scheme of flexible rolling forming is put forward and the relevant device is developed. Thirdly, the feasibility and practicality of flexible rolling forming are verified by rolling several typical three-dimensional surface parts such as spherical and saddle surface parts by self-developed device. Finally, verifies the reasonableness of the device and at the same time possesses the important guiding significance to the research and development of practical flexible rolling forming equipment.

Rolling Process for the Continuous Forming of Curved Surface Parts Based on Bended Rolls

2013 ◽  
Vol 684 ◽  
pp. 334-337
Author(s):  
Zhong Yi Cai ◽  
Mi Wang ◽  
Ming Zhe Li
Keyword(s):  
Convex Surface ◽  
Three Dimensional ◽  
Rolling Process ◽  
Forming Process ◽  
Continuous Forming ◽  
Metal Forming Process ◽  
Longitudinal Bending ◽  
Roll Gap ◽  
Curved Surface Parts ◽  
Dimensional Surface

A new sheet metal forming process which can form three-dimensional surface rapidly, effectively and with lower-cost has been proposed. This paper mainly focuses on the fundamental aspects of the process. The principle of the rolling process based on bended rolls is introduced, and the methods to calculate the longitudinal bending deformation and to design the roll gap are presented. Experiments for typical surface parts are carried out. The forming results of convex surface and saddle shaped surface parts are measured and analyzed, the analyzed results demonstrated that the proposed process is a feasible and effective way of forming three-dimensional surface parts.

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