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Effect of punching die angular clearance on punched hole quality of S275 mild steel sheet metal

  • N. A. Jaafar
  • A. B. AbdullahEmail author
  • Z. Samad
ORIGINAL ARTICLE
  • 48 Downloads

Abstract

Metal punching processes are widely used in mass production because of their simplicity, high levels of productivity, and low costs. The quality of the product made by punching greatly depends on various processing parameters such as the tool geometries, sheet material properties, punching conditions, punch and die material properties, and tooling wears. In this study, the effects of die clearance angles and die opening sizes were compared on the accuracy and quality of punched holes produced on 1.4-mm thick S275 mild steel metal sheet. A total of nine punching dies were made with die clearance angles of 0.25°, 0.50°, and 0.75° for each die opening sizes of ø20.225 mm, ø13.225 mm, and ø12.225 mm. The burr formations and die weight losses were monitored for 10th, 50th, 100th, 500th, and 1000th strokes. The results show that the die weight loss, indicative of wear, increases as the number of strokes increase, with the most losses at the initial stages of the punching process (10th–50th strokes). The lowest weight loss was obtained for dies with 0.75° angular clearance, corresponding to the lowest wear occurrence. The low wear indicates that the shearing edge remains relatively sharp and thus able to produce good quality holes. Thus, for producing good quality holes and increasing tool life, it is recommended that an angular clearance of 0.75° is considered in the design of punching dies.

Keywords

Punching die Die wear Angular clearance angle Cutting edge 

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Notes

Acknowledgments

The authors express their gratitude to the Department of Mechanical and Manufacturing, Advanced Technology Training Center (ADTEC) Kulim, Kedah, for providing the use of heat treatment, hardness testing and WEDM facilities and the School of Mechanical Engineering, Universiti Sains Malaysia, Penang, for providing access to press machines and SEM facilities.

Funding information

The first author would like to acknowledge the Public Service Department of Malaysia for the scholarship support under the HLP program.

References

  1. 1.
    Arslan Y, Özdemir A (2016) Punch structure, punch wear and cut profiles of AISI 304 stainless steel sheet blanks manufactured using cryogenically treated AISI D3 tool steel punches. Int J Adv Manuf Technol 87(1–4):587–599.  https://doi.org/10.1007/s00170-016-8515-6 CrossRefGoogle Scholar
  2. 2.
    Gustafsson E, Oldenburg M, Jansson A (2016) Experimental study on the effects of clearance and clamping in steel sheet metal shearing. J Mater Process Technol 229:172–180.  https://doi.org/10.1016/j.jmatprotec.2015.09.004 CrossRefGoogle Scholar
  3. 3.
    Murakawa M, Suzuki M, Shionome T, Komuro F, Harai A, Matsumoto A, Koga N (2014) Precision piercing and blanking of ultrahigh-strength steel sheets. Procedia Engineering 81:1114–1120.  https://doi.org/10.1016/j.proeng.2014.10.219 CrossRefGoogle Scholar
  4. 4.
    Husson C, Correia J, Daridon L, Ahzi S (2008) Finite elements simulations of thin copper sheets blanking: study of blanking parameters on sheared edge quality. J Mater Process Technol 199(1–3):74–83.  https://doi.org/10.1016/j.jmatprotec.2007.08.034 CrossRefGoogle Scholar
  5. 5.
    Wu X, Bahmanpour H, Schmid K (2012) Characterization of mechanically sheared edges of dual phase steels. J Mater Process Technol 212(6):1209–1224.  https://doi.org/10.1016/j.jmatprotec.2012.01.006 CrossRefGoogle Scholar
  6. 6.
    Soares J, Gipiela M, Lajarin S, Marcondes P (2013) Study of the punch–die clearance influence on the sheared edge quality of thick sheets. Int J Adv Manuf Technol 65(1–4):451–457.  https://doi.org/10.1007/s00170-012-4184-2 CrossRefGoogle Scholar
  7. 7.
    Hambli R (2001) Blanking tool wear modeling using the finite element method. Int J Mach Tools Manuf 41(12):1815–1829.  https://doi.org/10.1016/s0890-6955(01)00024-4 CrossRefGoogle Scholar
  8. 8.
    Subramonian S, Altan T, Ciocirlan B, Campbell C (2013) Optimum selection of variable punch-die clearance to improve tool life in blanking non-symmetric shapes. Int J Mach Tools Manuf 75:63–71.  https://doi.org/10.1016/j.ijmachtools.2013.09.004 CrossRefGoogle Scholar
  9. 9.
    Lo S-P, Chang D-Y, Lin Y-Y (2010) Relationship between the punch–die clearance and shearing quality of progressive shearing die. Mater Manuf Process 25(8):786–792CrossRefGoogle Scholar
  10. 10.
    Sabangban N, Mahayotsanun N, Sucharitpwatskul S, Mahabunphachai S (2016) Wear prediction of die coatings in strip ironing by finite element simulation. Transactions of the IMF 94(4):199–203CrossRefGoogle Scholar
  11. 11.
    Hatanaka N, Yamaguchi K, Takakura N, Iizuka T (2003) Simulation of sheared edge formation process in blanking of sheet metals. J Mater Process Technol 140(1–3):628–634.  https://doi.org/10.1016/s0924-0136(03)00803-3 CrossRefGoogle Scholar
  12. 12.
    Nothhaft K, Suh J, Golle M, Picas I, Casellas D, Volk W (2012) Shear cutting of press hardened steel: influence of punch chamfer on process forces, tool stresses and sheared edge qualities. Prod Eng 6(4–5):413–420.  https://doi.org/10.1007/s11740-012-0404-8 CrossRefGoogle Scholar
  13. 13.
    Luo S (1997) Studies on the wear conditions and the sheared edges in punching. Wear 208(1–2):81–90.  https://doi.org/10.1016/s0043-1648(96)07439-x CrossRefGoogle Scholar
  14. 14.
    Quazi T, Shaikh R (2012) An overview of clearance optimization in sheet metal blanking process. International Journal of Modern Engineering Research 2(6):4547–4558Google Scholar
  15. 15.
    Tekiner Z, Nalbant M, Gürün H (2006) An experimental study for the effect of different clearances on burr, smooth-sheared and blanking force on aluminium sheet metal. Mater Des 27(10):1134–1138.  https://doi.org/10.1016/j.matdes.2005.03.013 CrossRefGoogle Scholar
  16. 16.
    Armunanto VB, Cahyantoro Y, Priyanto K (2012) A circularity analysis of different clearances in the sheet metal punching process. Int J Eng Adv Technol 2(2):277–280Google Scholar
  17. 17.
    Ragu K (2015) Experimental analysis of die clearance distribution in a presstool assembly. Trans FAMENA 38(4):55–64Google Scholar
  18. 18.
    Jaafar H, Mori K, Abe Y, Nakanishi K (2016) Automatic centring with moving die for cold small clearance punching of die-quenched steel sheets. J Mater Process Technol 227:190–199.  https://doi.org/10.1016/j.jmatprotec.2015.08.010 CrossRefGoogle Scholar
  19. 19.
    Maruki R, Saito A, Aoki I (2013) Dimensional accuracy on Burr-free blanked products obtained by push-Back blanking method. Trans Jpn Soc Mech Eng VolC 79(807):4345–4352.  https://doi.org/10.1299/kikaic.79.4345 CrossRefGoogle Scholar
  20. 20.
    Sasada M, Saitou A (2015) Effect of constraint of sheet material on successful range of blanking conditions and cut surface in push-back blanking. Trans JSME (in Japanese) 81(830):15–00136–15-00136.  https://doi.org/10.1299/transjsme.15-00136 CrossRefGoogle Scholar
  21. 21.
    Ueda, T.,T. Iizuka ,S. Enoki. FEM analysis of punching-process in consideration of micro die wear. In MATEC web of conferences. 2016. France: EDP SciencesGoogle Scholar
  22. 22.
    Ostergaard DE (1989) Basic Die Making. McGraw-Hill, OhioGoogle Scholar
  23. 23.
    Jaafar NA, Abdullah AB, Samad Z (2018) Optimization of WEDM cutting parameters on surface roughness of 2379 steel using Taguchi method. SAE Int J Mater Manuf 11(2):05–11.  https://doi.org/10.4271/05-11-02-0010 CrossRefGoogle Scholar
  24. 24.
    Achouri M, Germain G, Dal Santo P, Saidane D (2014) Experimental and numerical analysis of micromechanical damage in the punching process for high-strength low-alloy steels. Mater Des 56:657–670.  https://doi.org/10.1016/j.matdes.2013.11.016 CrossRefGoogle Scholar
  25. 25.
    Hernández J, Franco P, Estrems M, Faura F (2006) Modelling and experimental analysis of the effects of tool wear on form errors in stainless steel blanking. J Mater Process Technol 180(1–3):143–150.  https://doi.org/10.1016/j.jmatprotec.2006.05.015 CrossRefGoogle Scholar
  26. 26.
    Hambli R (2002) Design of experiment based analysis for sheet metal blanking processes optimisation. Int J Adv Manuf Technol 19(6):403–410.  https://doi.org/10.1007/s001700200041 CrossRefGoogle Scholar
  27. 27.
    Lawanwong, K.,N. Pornputsiri ,G. Luangsopapun. An investigation of adhesion wear behavior of tool steel on blanking die. In 2011 international conference on advanced materials engineering. 2011. Dermatol SinGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Metal Forming Research Group, School of Mechanical EngineeringUniversiti Sains Malaysia, Engineering CampusNibong TebalMalaysia

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