Transactions of Materials and Heat Treatment

Title：Research on the control model of minimum radius for rolling on bending-plate machine with four-roll

Authors： Chen Dedao1 Yang Jin1 An Huping2

Unit： 1. College of Mechano-Electronic Engineering Lanzhou Jiaotong University Lanzhou 730070 China 2. School of Bailie Engineering and Technology Lanzhou City University Lanzhou 730070 China

KeyWords： four-roll bending-plate machine springback radius force condition minimum bending radius

ClassificationCode：

year,vol(issue):pagenumber：2016,41(1):77-82

Abstract：

The springback of the material in the bending-rolling process was studied by four-roll bending-plate machine. Based on the relationship between stress state of bending plate with curvature radius of springback and bend radius, the models of geometric and calculation were set up. Then, calculation methods of bending force and bending moment were established, and four factors influencing on the minimum roll radius were analyzed. On the basis of force analysis for pre-bending and bending-rolling process on four-roller bend-plate machine, bending work and driving torque were given. The minimum curvature radius methods were put forward respectively under the four constraint conditions of the motor power, the friction feed, the contact stress and the outer sphere tension. Finally, the minimum curvature radius were calculated and compared with the experimental values by the calculation model combining with the practical technological parameters. The result shows that it is identical with the actual value, and the effectiveness of the models is verified.

Funds：

国家自然科学基金资助项目（51265022）

陈德道（1965-），男，硕士，副教授

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