Abstract
In the microdrilling of metal, an exit burr forms due to plastic deformation of the remnant material when the drill approaches the bottom of the hole. In this work, a cyanoacrylate adhesive was applied at the exit surface to prevent the exit burr. The copy papers smeared with cyanoacrylate were layered at the exit surface in a uniform coat. The cyanoacrylate can be easily removed by immersion in acetone. The cyanoacrylate layer was effective in preventing exit burr in the drilling of low-hardness materials, such as aluminum or copper. In the case of harder materials, however, such as 304 stainless steel, the cyanoacrylate layer failed. In this case, backup foil adhered with cyanoacrylate was shown to be effective in burr prevention.
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Kim, D., Lee, Y., Chu, C. et al. Prevention of exit burr in microdrilling of metal foils by using a cyanoacrylate adhesive. Int J Adv Manuf Technol 27, 1071–1076 (2006). https://doi.org/10.1007/s00170-004-2304-3
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DOI: https://doi.org/10.1007/s00170-004-2304-3