Tool Wear in Friction Drilling

Journal Article · Mon Jan 01 00:00:00 EST 2007 · International Journal of Machine Tools and Manufacture

DOI:https://doi.org/10.1016/j.ijmachtools.2006.10.009· OSTI ID:1093004

Miller, Scott F ^[1]; Blau, Peter Julian ^[1]; Shih, Albert J. ^[2]

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1. ORNL
2. University of Michigan

This study investigated the wear of carbide tools used in friction drilling, a nontraditional hole-making process. In friction drilling, a rotating conical tool uses the heat generated by friction to soften and penetrate a thin workpiece and create a bushing without generating chips. The wear of a hard tungsten carbide tool used for friction drilling a low carbon steel workpiece has been investigated. Tool wear characteristics were studied by measuring its weight change, detecting changes in its shape with a coordinate measuring machine, and making observations of wear damage using scanning electron microscopy. Energy dispersive spectroscopy was applied to analyze the change in chemical composition of the tool surface due to drilling. In addition, the thrust force and torque during drilling and the hole size were measured periodically to monitor the effects of tool wear. Results indicate that the carbide tool is durable, showing minimal tool wear after drilling 11000 holes, but observations also indicate progressively severe abrasive grooving on the tool tip.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1093004
• Journal Information: International Journal of Machine Tools and Manufacture, Vol. 47, Issue 10; ISSN 0890-6955
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

friction drilling
thermal drilling