吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (06): 1529-1535.doi: 10.7964/jdxbgxb201306016

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Method of flexible rolling for surface sheet metal

LI Ren-jun, LI Ming-zhe, XUE Peng-fei, CAI Zhong-yi, QIU Ning-jia   

  1. Dieless Forming Technology Center, Jilin University, Changchun 130022, China
  • Received:2012-09-26 Online:2013-11-01 Published:2013-11-01

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Abstract:

Flexible rolling for surface of sheet metal is a novel method, which combines the traditional rolling technology with the multi-point forming. The curvature of the rigid rolls is adjusted by several control points in the rolling process to meet the requirements of forming forces of different surface work pieces. The three-dimensional (3D) plastic deformation of the surface sheet and the sheet feeding can be achieved by the rolling reductions and the rolls rotation. This article discusses the basic principles, forms and forming characteristics of the surface flexible rolling technology. The formula of work rolls bending radius of the circle is derived. The correctness of the method is verified by simulation of explicit dynamic finite element analysis. The effect of the maximum rolling reduction on rolling horizontal and vertical curvature is given. A surface flexible rolling device is developed for the first time and several 3D surfaces, such as spherical pieces and saddle-shaped pieces, are obtained using this device. The work pieces have good surface rolling effect and the results of the test and simulation prove the feasibility and practicality of the surface flexible rolling method.

Key words: material synthesis and processing technology, flexible forming, multi-point forming, surface rolling, flexible roller

CLC Number: 

  • TG335.12

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