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Effect of incremental multi-step technology on longitude bending of 3D curved part in continuous roll process

  • Yi Li
  • Mingzhe LiEmail author
ORIGINAL ARTICLE
  • 17 Downloads

Abstract

Continuous roll process based on sheet thickness reduction can effectively form 3D curved parts. In the forming process, work hardening is always an important factor for affecting thickness reduction of a rolled plate. In this paper, incremental multi-step forming technology is proposed for the first time, which is different from the previous multi-step forming technology, which only one set of roll gap is needed in the whole forming process. The forming process of convex and saddle curved parts is simulated, and the effect of incremental multi-step forming technology on longitude bending deformation is studied. The results show that in continuous roll process for a 3D curved part, roll gap distribution is uneven, so thickness reduction of the rolled plate is different along the roll gap. By maximizing the thickness difference between the middle and both sides of the rolled plate, the longitudinal bending deformation of the rolled plate is maximized. When the forming steps are one, two, three, and six, the longitude curvature radiuses of forming a convex curved part is 227 mm, 186 mm, 161 mm, and 154 mm in order, so the longitude bending deformation increase to 18%, 29%, and 32% in order; the longitude curvature radiuses of forming a saddle curved part is 239 mm, 185 mm, 167 mm, and 164 mm in order, so the longitude bending deformation increases to 23%, 30%, and 31% in order. Therefore, this technology is suitable for forming 3D curved parts with large bending deformation.

Keywords

Continuous roll 3D curved part Numerical simulation Incremental multi-steps 

Notes

Acknowledgments

The study was supported by the Program for Innovative Research Team of JiLin Engineering Normal University.

Funding information

Financial assistance for this study was provided by the National Natural Science Foundation of China (no. 51275202).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. 1.
    Hansen NE, Tannerup O (1979) Modeling of elastic-plastic bending of beams using a roller bending machine[J]. J Manuf Sci Eng 101(3):304–310Google Scholar
  2. 2.
    山下勇, 加藤和典, 遠藤順一. 可撓ロールによる複曲面成形加工の研究 (第 1 報 可撓べンデイングロール機の試作)[C]. 日本塑性加工学会. 第 37 回塑性加工連合講演会論文集, 横浜, 1986:345–348Google Scholar
  3. 3.
    Kim TJ, Yang DY (2000) Improvement of formability for the incremental rolled plate forming process[J]. Int J Mech Sci 42(7):1271–1286CrossRefGoogle Scholar
  4. 4.
    Yamashita I, Yamakawa T (1988) Apparatus for forming plate with a double-curved part, US, p 11Google Scholar
  5. 5.
    Yoon SJ, Yang DY (2003) Development of a highly flexible incremental roll forming process for the manufacture of a doubly curved rolled plate. CIRP Ann Manuf Technol 52(1):201CrossRefGoogle Scholar
  6. 6.
    Shim DS, Yang DY, Han MS, Chung SW, Kim KH, Roh HJ (2008) Experimental study on manufacturing doubly curved plates using incremental rolling process, [in] Proceedings of the 9th International Conference on Technology of Plasticity, Gyeongju, p 887Google Scholar
  7. 7.
    Shim DS, Yang DY, Kim KH, Han MS, Chung SW (2009) Numerical and experimental investigation into cold incremental rolling of doubly curved plates for process design of a new LARS (line array roll) rolling process. CIRP Ann Manuf Technol 58(1):239CrossRefGoogle Scholar
  8. 8.
    Li MZ, Hu ZQ, Cai ZY (2007) Method of multipoint continuous forming for the freeform surface parts. Chin J Mech Eng 43(12):155CrossRefGoogle Scholar
  9. 9.
    Cai ZY, Li MZ, Lan YW (2012) Three-dimensional rolled plate continuous forming process based on flexible roll bending: principle and experiments. J Mater Process Technol 212:120CrossRefGoogle Scholar
  10. 10.
    Cai ZY, Sui Z, Cai FX, Liu L (2013) Continuous flexible roll forming for doubly curved part and the forming process control. Int J Adv Manuf Technol 66:393CrossRefGoogle Scholar
  11. 11.
    Lin YH, Hua M (2000) Influence of strain hardening on continuous plate roll-bending process. Int J Non Linear Mech 35:883CrossRefGoogle Scholar
  12. 12.
    Zeng J, Liu ZH, Champliaud H (2008) FEM dynamic simulation and analysis of the roll-bending process for forming a conical tube. J Mater Process Technol 198:330CrossRefGoogle Scholar
  13. 13.
    Cai ZY, Li MZ (2013) Principle and theoretical analysis of continuous roll forming for doubly curved part. SCIENCE CHINA Technol Sci 56:351CrossRefGoogle Scholar
  14. 14.
    Li RJ, Li MZ, Qiu NJ, Cai ZY (2014) Surface continuous roll forming process for three-dimensional rolled plate parts. J Mater Process Technol 214:380CrossRefGoogle Scholar
  15. 15.
    Cai ZY, Mi W, Li MZ (2014) Study on the continuous roll forming process of swept surface rolled plate part. J Mater Process Technol 204(9):1820CrossRefGoogle Scholar
  16. 16.
    Li MZ, Cai ZY, Li RZ, Lan YW, Qiu NJ (2012) Continuous forming method for doubly curved part based on the rolling process using bended roll. Chin J Mech Eng 48:44Google Scholar
  17. 17.
    Li Y, Li MZ, Liu K (2018) Study on the utilization rate of processed spherical surface part in flexible rolling[J]. Int J Adv Manuf Technol:1–12Google Scholar
  18. 18.
    Li Y, Li MZ, Liu K, Li Z (2018) Effect of differential speed rotation technology on the forming uniformity in flexible rolling process[J]. Materials 11(10)CrossRefGoogle Scholar
  19. 19.
    Li Y, Li MZ, Liu K (2019) Influence of a multi-step process on the thickness reduction error of rolled plate in a flexible rolling process[J]. Int J Miner Metall MaterGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Mechanical EngineeringJilin Engineering Normal UniversityChangchunChina
  2. 2.Dieless Forming Technology Center, Roll Forging InstituteJilin UniversityChangchunChina

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