Experimental and numerical studies on the determination of twist drill temperature in dry drilling: A new approach

Machinability of Titanium Alloys in Drilling

“…18. The thermocouple was inserted through the oil hole of internal coolant carbide drill (Ozcelik & Bagci, 2006) www.intechopen.com (Rahim & Sasahara, 2011) www.intechopen.com…”

Experimental Investigation of the Effect of Machining Parameters on the Surface Roughness and the Formation of Built Up Edge (BUE) in the Drilling of Al 5005

“…Thus, because of big and unstable BUE due to low cutting speeds ( Figures 3, 4 a and b), the surface roughness increased further and a bad surface was formed (Figures 2 a-f). The decrease in BUE due to the increase in cutting speed can be ascribed to the increase in temperature [23,25]. Since high cutting speeds resulted in much more increase in the temperature, BUE on the cutting edge lost its hardness and strength, and in the continuing cutting process it couldn't resist the tensions on itself and it was removed from the cutting edge ( Figure 3 and 4 c).…”

“…This case signified that machined surfaces were more influenced from the forces during the cutting process. Likewise, the increase in the feed rate resulted in high friction resistance, pressure and increase in temperature [23,25]. In this case, the chip experienced to shear tensions, and adhered to the cutting tool.…”

Empirical study regarding the effects of minimum quantity lubricant utilization on performance characteristics in the drilling of Al 7075

“…In drilling processes, performed with the usage of the MQL technique, a better surface quality is achieved compared to the conventional cooling technique and it is determined that the usage of MQL increases the tool life (Heinemann, et al, 2005;Braga, et al, 2002). The incurred temperature during dry drilling process at small sized drilling processes performed with the usage of coated cutting tools is examined numerically (Ozcelik and Bagci, 2006). Zeilmann and Weingaertner (2006) examined the incurred temperature during the drilling of Ti6A14V alloy by MQL and the dry processing techniques.…”

“…It is observed that the cutting performance at the machining of AISI 1040 is better in the MQL technique compared to the dry processing . Beside this, the effect of the cooling methods used at manufacturing and the cutting parameters on the performance characteristics constitutes the subject of several studies (Huseyinoglu, 2008;Lianq Chern, 2006;Davidson et al, 2008;Pawade et al, 2007;Diniz and Micaroni, 2007;Huseyinoglu and Tosun, 2009;Attanasio et al, 2006;Bruni et al, 2006;Da Silva et al, 2007;Bhowmick and Alpas, 2008;Bono and Ni, 2001;Kelly and Cotterell, 2002).…”