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Deburring of complex-shaped drilling intersections: a numerical method for modelling the tool path

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Abstract

When drilling holes, burrs are created in particular on the exit surface. Existing deburring tools and methods enable the deburring of plane exit surfaces or slightly curved cross-drilled holes. However, these tools do not meet practical requirements for deburring in the machining industry where component geometries are often complex. This paper presents a numerical method, which enables deburring of complex-shaped drilling intersections with ball-end cutters. First, the particular intersection is analysed as it defines the maximum tool diameter of the ball-end cutter. Subsequently, a three-axis tool path for ball-end cutters is generated to correlate with the intersection geometry thus enabling constant chamfering and avoiding tool collisions. The model is verified by an experiment using the material AlSi7Mg and measuring secondary burr heights and chamfer widths. Subsequently, the functionality of the model for further geometry variants is investigated.

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Acknowledgements

The authors are responsible for the content of this publication. The authors are also grateful to the anonymous reviewers for their constructive criticism which served to improve this paper.

Funding

This research and development project is funded by the German Research Foundation (DFG AB 133/94-1).

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Authors and Affiliations

  1. Laboratory for Computer Integrated Design and Manufacturing, Universidade Metodista de Piracicaba, Piracicaba, Brazil

    Klaus Schützer

  2. Institute of Production Management, Technology and Machine Tools (PTW), Technische Universität Darmstadt, Darmstadt, Germany

    Eberhard Abele, Adrian Meinhard & Julia Donnelly

Authors
  1. Klaus Schützer
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  2. Eberhard Abele
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  3. Adrian Meinhard
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  4. Julia Donnelly
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Corresponding author

Correspondence to Adrian Meinhard.

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Schützer, K., Abele, E., Meinhard, A. et al. Deburring of complex-shaped drilling intersections: a numerical method for modelling the tool path. Int J Adv Manuf Technol 102, 67–79 (2019). https://doi.org/10.1007/s00170-018-3205-1

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  • DOI: https://doi.org/10.1007/s00170-018-3205-1

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