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Development of a shaving die design for reducing rollover

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Abstract

The shaving process is well known as a precise sheet-metal die-cutting process to achieve a burnish depth through the material thickness. However, in recent years, the requirement of decreases in the rollover on shaved surfaces has become increasingly stringent. To attain this requirement, in the present research, a shaving die was developed and proposed. Based on a stress distribution analysis, a finite element method (FEM) simulation was used as a tool to clarify the cutting mechanism and rollover characteristics by using a conventional shaving die; afterwards, the conventional shaving die was developed, and a new shaving die was proposed to achieve decreases in the rollover. By comparing the cutting principle with that of a conventional shaving die, the concept design of a new shaving die that can achieve decreases in rollover was also clearly illustrated. The decreases in rollover could be successfully achieved by two mechanisms: increases in the compressive stress on the rollover zone and increases in the shaving allowance. The effects of the new shaving die geometries and shaving allowance on rollover were also investigated. To validate the FEM simulation results, laboratory experiments were carried out. The experimental results agreed well with the FEM simulation results in terms of the cut surface characteristics including the rollover, burnish depth, and fracture depth. Therefore, in the present research, it was revealed that the rollover on a shaved surface could be successfully decreased by using the new shaving die application.

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Acknowledgements

The authors would like to express their gratitude to Wiriyakorn Phanitwong, Ph.D., Department of Industrial Engineering, Rajamangala University of Technology Rattanakosin, for her advice on this research.

Funding

This research was partially supported by the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission, under Grant No. 56000519 and Grant No. 57000618.

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Authors and Affiliations

  1. Department of Tool and Materials Engineering, King Mongkut’s University of Technology Thonburi, 126 Bang Mod, Thung Khru, Bangkok, 10140, Thailand

    Arkarapon Sontamino & Sutasn Thipprakmas

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  1. Arkarapon Sontamino
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  2. Sutasn Thipprakmas
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Correspondence to Sutasn Thipprakmas.

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Sontamino, A., Thipprakmas, S. Development of a shaving die design for reducing rollover. Int J Adv Manuf Technol 103, 1831–1845 (2019). https://doi.org/10.1007/s00170-019-03639-9

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  • DOI: https://doi.org/10.1007/s00170-019-03639-9

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