Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools

Chris Morgan, R. Ryan Vallance, Eric Russell Marsh

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    This paper describes a micro hole drilling technique using micro electro-discharge machining (μEDM) and polycrystalline diamond (PCD) micro tools to improve the precision of holes drilled in hard tungsten carbide. A two-step technique is described for achieving faster, more precise and accurate holes. First, the hole is drilled with μEDM using tungsten electrodes shaped by WEDG. Next, the holes are improved by grinding with PCD micro tools, which are also shaped by WEDG. It is found that holes fabricated with PCD micro tools are superior since they have less heat-affected zone, exhibit improved surface finish, and have less form error. Also, the hole size is more accurately controlled with PCD tools, since no gap exists between the tool and workpiece and because tool wear is less than electrode wear during μEDM.

    Original languageEnglish (US)
    Title of host publicationProceedings of the 20th Annual ASPE Meeting, ASPE 2005
    StatePublished - Dec 1 2005
    Event20th Annual Meeting of the American Society for Precision Engineering, ASPE 2005 - Norfolk, VA, United States
    Duration: Oct 9 2005Oct 14 2005

    Publication series

    NameProceedings of the 20th Annual ASPE Meeting, ASPE 2005

    Other

    Other20th Annual Meeting of the American Society for Precision Engineering, ASPE 2005
    CountryUnited States
    CityNorfolk, VA
    Period10/9/0510/14/05

    Fingerprint

    Tungsten carbide
    Diamonds
    Electric discharge machining
    Wear of materials
    Electrodes
    Heat affected zone
    Tungsten
    Drilling

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering

    Cite this

    Morgan, C., Vallance, R. R., & Marsh, E. R. (2005). Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools. In Proceedings of the 20th Annual ASPE Meeting, ASPE 2005 (Proceedings of the 20th Annual ASPE Meeting, ASPE 2005).
    Morgan, Chris ; Vallance, R. Ryan ; Marsh, Eric Russell. / Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools. Proceedings of the 20th Annual ASPE Meeting, ASPE 2005. 2005. (Proceedings of the 20th Annual ASPE Meeting, ASPE 2005).
    @inproceedings{911bf8c1fba4411b9a64db39ac5f6019,
    title = "Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools",
    abstract = "This paper describes a micro hole drilling technique using micro electro-discharge machining (μEDM) and polycrystalline diamond (PCD) micro tools to improve the precision of holes drilled in hard tungsten carbide. A two-step technique is described for achieving faster, more precise and accurate holes. First, the hole is drilled with μEDM using tungsten electrodes shaped by WEDG. Next, the holes are improved by grinding with PCD micro tools, which are also shaped by WEDG. It is found that holes fabricated with PCD micro tools are superior since they have less heat-affected zone, exhibit improved surface finish, and have less form error. Also, the hole size is more accurately controlled with PCD tools, since no gap exists between the tool and workpiece and because tool wear is less than electrode wear during μEDM.",
    author = "Chris Morgan and Vallance, {R. Ryan} and Marsh, {Eric Russell}",
    year = "2005",
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    language = "English (US)",
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    Morgan, C, Vallance, RR & Marsh, ER 2005, Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools. in Proceedings of the 20th Annual ASPE Meeting, ASPE 2005. Proceedings of the 20th Annual ASPE Meeting, ASPE 2005, 20th Annual Meeting of the American Society for Precision Engineering, ASPE 2005, Norfolk, VA, United States, 10/9/05.

    Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools. / Morgan, Chris; Vallance, R. Ryan; Marsh, Eric Russell.

    Proceedings of the 20th Annual ASPE Meeting, ASPE 2005. 2005. (Proceedings of the 20th Annual ASPE Meeting, ASPE 2005).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    N2 - This paper describes a micro hole drilling technique using micro electro-discharge machining (μEDM) and polycrystalline diamond (PCD) micro tools to improve the precision of holes drilled in hard tungsten carbide. A two-step technique is described for achieving faster, more precise and accurate holes. First, the hole is drilled with μEDM using tungsten electrodes shaped by WEDG. Next, the holes are improved by grinding with PCD micro tools, which are also shaped by WEDG. It is found that holes fabricated with PCD micro tools are superior since they have less heat-affected zone, exhibit improved surface finish, and have less form error. Also, the hole size is more accurately controlled with PCD tools, since no gap exists between the tool and workpiece and because tool wear is less than electrode wear during μEDM.

    AB - This paper describes a micro hole drilling technique using micro electro-discharge machining (μEDM) and polycrystalline diamond (PCD) micro tools to improve the precision of holes drilled in hard tungsten carbide. A two-step technique is described for achieving faster, more precise and accurate holes. First, the hole is drilled with μEDM using tungsten electrodes shaped by WEDG. Next, the holes are improved by grinding with PCD micro tools, which are also shaped by WEDG. It is found that holes fabricated with PCD micro tools are superior since they have less heat-affected zone, exhibit improved surface finish, and have less form error. Also, the hole size is more accurately controlled with PCD tools, since no gap exists between the tool and workpiece and because tool wear is less than electrode wear during μEDM.

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    Morgan C, Vallance RR, Marsh ER. Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools. In Proceedings of the 20th Annual ASPE Meeting, ASPE 2005. 2005. (Proceedings of the 20th Annual ASPE Meeting, ASPE 2005).