Russian Journal of Non-Ferrous Metals

, Volume 58, Issue 5, pp 495–499 | Cite as

Calculation of parameters of drawing-out the half-sphere parts in the stamp with an elastic element

Pressure Treatment of Metals
  • 8 Downloads

Abstract

The method of forming parts of a half-sphere type in a stamp, where a die is the generatrix of the part, is presented. This is attained due to the use of an elastic steel element arranged along the puncheon contour in the stamp design. This process scheme makes it possible to combine drawing out and calibration in one stamp. Calibration when drawing out spherelike parts is necessary because of the fact that a large segment free of contact with the puncheon and a die, on which the billet losses stability and starts to corrugate, is formed in a billet. An elastic element made of spring steel and arranged along the contour of a rigid puncheon calibrates the part at the final drawing-out stage. The schematic of stamping for a half-spherical part with relative thickness S' = S/D0 × 100% = 1.5–0.15 is presented in the article. In that work calculations of elastic element’s geometrical parameters were made. To develop semi sphere part from aluminum alloy 5056 with thickness elastic element made of steel 1060 was designed. Dimension of gap between punch and elastic element was determined as well. Maximum values of strengths happened in elastic element during stamping were calculated. It was investigated that elastic element do not have plastic flow deformation. Use of elastic element helps to produce parts with accurate geometrical dimensions and compensate elastic restitution. Also due to increase of friction elastic element allows block weakest section.

Keywords

deformation channeling half-sphere drawing elastic restitution weakest section plastic flow deformation elastic element strength of material 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Romanovskii, V.P., Spravochnik po holodnoi shtampovke (Cold Stamping Handbook), Leningrad: Machinistroenie, 1979.Google Scholar
  2. 2.
    Storogev, M.V., Teoriya obrabotki metallov davleniem (Theory of Pressure Treatment of Metals), Moscow: Machinistroenie, 1977.Google Scholar
  3. 3.
    Marciniak, Z. and Duncan, J.L.Hu., Mechanics of Sheet Metal Forming, Chennai, Ed., India: Butterworth–Heinemann, 2002.Google Scholar
  4. 4.
    Pearson, C.E. and Parkins, R.N., The Extrusion of Metals, London: Chapman & Hall, 1961.Google Scholar
  5. 5.
    Dem’yanenko, E.G., A Technique of shaping the barrel-type pats, Russ. Aeronaut, 2014, vol. 57, no. 2, pp. 204–211.CrossRefGoogle Scholar
  6. 6.
    Dem’yanenko, E.G., Forming of thin-walled axisimmetric parts with buckled and concave shape based on bead forming process, Zagotovit. Proizv. Mashinostr., 2014, no. 7, pp. 23–28.Google Scholar
  7. 7.
    Erisov, Y.A. and Grechnikov, F.V., Influence of structure parameters on process stability of anisotropic blanks' forming, Izv. Samara Nauch. Tsentr. Ross. Akad. Nauk, no. 4, pp. 293–298.Google Scholar
  8. 8.
    Chen Jun, Shi Xiao-xiang, and Ruan Xue-ye, Numerical simulation-driven optimization of sheet, Trans. Nonferr. Met. Soc., China, 2003, vol. 13, no. 4, pp. 845–848.Google Scholar
  9. 9.
    En-zhi Gao, Hong-wei Li, Hong-chao Kou, Hui Chang., Jin-shan Li., and Lian Zhou, Influences of material parameters on deep drawing of thin-walled hemispheric surface part, Trans. Nonferr. Met. Soc. China, 2009, vol. 19, pp. 433–477.CrossRefGoogle Scholar
  10. 10.
    Jie Wu, Zengsheng Ma, Yichun Zhou, and Chunsheng Lu, Prediction of failure modes during deep drawing of metal sheets with nickel coating, J. Mater. Sci. Technol., 2013, vol. 29, no. 11, pp. 1059–1066.CrossRefGoogle Scholar
  11. 11.
    Isachenkov, E.I., Shtampovka rezinoi i zhidkostyu (Rubber and Liquid Forming), Moscow: Mashinostroenie, 1967.Google Scholar
  12. 12.
    Birukov, N.M., RF Patent 2212970, 2003.Google Scholar
  13. 13.
    Tomilov, M.F. and Shagunov, A.V., RF Patent 2162759, 2001.Google Scholar
  14. 14.
    Golovlev, V.D., Rascheti processov listovoy shtampovki (Designing of Sheet Stamping Processes), Moscow: Mashinostroenie, 1974.Google Scholar
  15. 15.
    Sannders, W.T., US Patent 3494169, 1970.Google Scholar
  16. 16.
    Bor-Tsuen Lin, Kun-Min Huang, Chun-Chih Kuo, and Wen-Ting Wang, Improvement of deep drawability by using punch surfaces with microridges, J. Mater. Process. Technol., 2015, vol. 225, pp. 275–285.CrossRefGoogle Scholar
  17. 17.
    Walde, T. and Riedel, H., Simulation of earing during deep drawing of magnesium alloy AZ31, Acta Mater., 2007, vol. 55, pp. 867–874.CrossRefGoogle Scholar
  18. 18.
    Moshnin, E.N., Tehnologiya shtampovki krupnogabaritnih detalei (Forming Technology of Large Machine Parts), Moscow: Mashinostroenie, 1973.Google Scholar
  19. 19.
    Popov, I.P., Zimarev, M.V., and Nesterenko, E.S., Improvement of forming of thin wall cone shape parts, Zagotovit. Proizvod. Mashinostr., 2012, no. 7, pp. 18–21.Google Scholar
  20. 20.
    Nesterenko, E.S., Popov, I.P., and Kuzin, A.O., Modeling of two-angular bending in a stamp with an elastic element, Izv. Samara Nauch. Tsentr. Ross. Akad. Nauk, 2016, vol. 18, no. 4, pp. 25–34.Google Scholar
  21. 21.
    Boyarshinov, S.V., Osnovy stroitelnoi mekhaniki mashin (Foundations of Machinery Structural Analysis), Moscow: Mashinostroenie, 1987.Google Scholar
  22. 22.
    Davis, J.R., Heat-Resistant Materials, ASM International, 1997.Google Scholar
  23. 23.
    Nesterenko, E., Stamping of hemispheric surface parts in die tool equipped with steel elastic element, Key Eng. Mater., 2016, vol. 684, pp. 234–241.CrossRefGoogle Scholar

Copyright information

© Allerton Press, Inc. 2017

Authors and Affiliations

  1. 1.Samara National Research University (Samara University)SamaraRussia

Personalised recommendations