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 Scopus citations

    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

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering

    Fingerprint Dive into the research topics of 'Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools'. Together they form a unique fingerprint.

    Cite this