An Experimental Investigation of the Effect of Depth and Diameter of Pre-drilling on Friction Drilling of A7075-T651

Year 2016, , 46 - 56, 31.05.2016

Zülküf Demir

https://doi.org/10.29187/jscmt.2017.5

Cited By: 6

Abstract

Friction drilling is a non-traditional drilling process, in which specimens are drilled by means of frictional heat, which is
obtained from friction effect in between rotating conical tool and workpiece area. The main purpose of current study was to
investigate the effect of pre-drilling depth and diameter on the bushing shape, initial deformation and frictional heat in
friction drilling of A7075-T651 aluminum alloy, known as a brittle material. Results showed that the effect of pre-drilling
depended on the geometrical dimensions of the tip of the tool. The initial deformation was reduced, frictional heat was
generated regularly and bushing shape was in the form of cylindrical with less cracks and petal formation in conditions predrilling
diameter close to the end diameter of the tip of the tool and pre-drilling depths bigger than its length. The highest
temperature was recorded at 3000 rpm spindle speed and 40 mm/min feed rate. 

Keywords

Friction drilling; Pre-drilling diameter and depth; Initial deformation; Temperature

References

• Miller, S, F.; Blau, J.; Shih, A, J.; Microstructural alteration associated with friction drilling of steel, aluminium, and titanium. J. Mater. Eng. and Perform., (14) (2005) 647-653.
• Miller, S, F.; Tao, J.; Shih, A,J.; Friction drilling of cast metals. Int. J. Mach. Tools & Manuf., (46) (2006) 1526-1535.
• Van Geffen, J.A.; Piercing Tools. US Patent 3,939,683. (1976)
• Van Geffen, J.A.; Method and apparatuses for forming by frictional feat and pressure holes surrounded each by a boss in a metal plate or the wall of a metal tube. US Patent 4,175,413. (1979)
• Chow, H.M.; Lee, S.M; Young, L.D.; Machining characteristic study of friction drilling on AISI 304 stainless steel. J. Mater. Proc. Technol., (207) (2008) 180-186.
• Boopathi, M.; Shankar, S.; Manikandarkumar, S.; Ramesh, R.; Experimental investigation of friction drilling on brass, aluminum and stainless steel. Procedia Eng., (64) (2013) 1219-1226.
• Ozler, L.; Doğru, N.; An experimental investigation of hole geometry in friction drilling. Mater. and Manuf. Proc., (28) (2013) 470-475.
• Lee, S, M.; Chow, H, M.; Huang, F,Y.; Yan, B, H.; Friction drilling of austenitic stainless steel by uncoated an PVD AlCrN- and TiAlN- coated tungsten carbide tools. Int. J. Mach. Tools & Manuf., (49) (2009) 81-88.
• Miller, S, F.; Blau, P,.J.; Shih, A,J.; Tool wear in friction drilling. Int. J. Mach. Tools & Manuf., (47) (2007)1636-1645.
• Miller, S, F.; Shih, A, J.; Thermo-mechanical finite element modelling of the friction drilling process. J. Manuf. Sci. and Eng., by ASME, (129) (2007) 531-538.
• Miller, S, .F.; Wang, H.; Li, R.; Shih, A,J.; Experimental and numerical analysis of the friction drilling process. ASME J. Manuf. Sci. and Eng., (128) (2008), 802-810.
• Kaya, M,T.; Aktas, A.; Beylergil, B.; Akyildiz, H,K.; An experimental study on friction drilling of st12 steel. Transact. Can. Soc. for Mech. Eng., (38) (2014) 319-329
• Demir, Z.; Ozek, C.; Investigate the effect of pre-drilling in friction drilling of A7075-T651. Mater. and Manuf. Proc., (29) (2014) 593-599.