Hole quality and burr reduction in drilling aluminium sheets

Lukas Pilny, Leonardo De Chiffre, Miroslav Piska, Morten F. Villumsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    Optimization of the metal drilling process requires creation of minimum amount of burrs and uniform appearance of the drilled holes. In this paper, an experimental investigation was performed on 2 mm sheets of wrought aluminium alloy Al99.7Mg0.5Cu-H24, using 1.6 and 2 mm diameter drills. Cutting data, clamping conditions, and drill geometry were varied in order to optimize the process and reach the desired quality. The results revealed possible reduction of burr occurrence on both the entry and exit side of the sheet, requiring no additional deburring. The demand on the uniform appearance of drilled holes was fulfilled as well as high productivity achieved. Such optimized process results in a noticeable
    production cost reduction.
    Original languageEnglish
    JournalCIRP Journal of Manufacturing Science and Technology
    Pages (from-to)102-107
    Publication statusPublished - 2012

    Bibliographical note

    This paper was first presented at the international conference on advanced
    manufacturing engineering, 14–15 September 2011, Brno, Czech Republic.


    • Drilling
    • Aluminium
    • Burr minimizing
    • Measurement
    • Vacuum clamping


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