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",
month = "12",
day = "1",
language = "English (US)",
isbn = "1887706399",
series = "Proceedings of the 20th Annual ASPE Meeting, ASPE 2005",
booktitle = "Proceedings of the 20th Annual ASPE Meeting, ASPE 2005",

}

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

TY - GEN

T1 - Micro grinding blind holes in hard tungsten carbide with polycrystalline diamond micro tools

AU - Morgan, Chris

AU - Vallance, R. Ryan

AU - Marsh, Eric Russell

PY - 2005/12/1

Y1 - 2005/12/1

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.

UR - http://www.scopus.com/inward/record.url?scp=84884870005&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84884870005&partnerID=8YFLogxK

M3 - Conference contribution

SN - 1887706399

SN - 9781887706391

T3 - Proceedings of the 20th Annual ASPE Meeting, ASPE 2005

BT - Proceedings of the 20th Annual ASPE Meeting, ASPE 2005

ER -

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).