Rotary Ultrasonic Machining of Titanium Alloy: Effects of Machining Variables

Experimental investigations on core drilling by ultrasonic-vibration-assisted grinding for hard-to-machine materials - a review

“…The materials are classified into three types: ductile, brittle materials and carbon fibre composite as shown in all the tables. Using a constant federate machine, only feedrate has significant effect on MRR in UVAG of Ti and alumina, and MRR was proportional to federate (Churi et al, 2005(Churi et al, , 2006. While in UVAG of CMC, MRR was not only affected by feedrate, but also by rotational speed and vibration amplitude.…”

“…The feedrates are reported in the literature: 0.55-1.16 mm/s (Prtrukha, 1970), 0.07-1.67 mm/s (Ya et al, 2001), 0.06-0.25, 0.06, 0.25, 0.01, 0.09-0.15, 0.02-0.05, and 0.09-0.16 mm/s (Churi et al, 2007b(Churi et al, , 2007d(Churi et al, , 2009(Churi et al, , 2006Jiao et al, 2005aJiao et al, , 2005bLi et al, 2004aLi et al, , 2004bLi et al, , 2005bLi et al, , 2005c.…”

“…Surface roughness(Ra) of both machined rod surface and hole surface is measured along the feed direction by a surface profilometer (contact mode) (Zeng et al, 2004;Churi et al, 2005Churi et al, , 2009Churi et al, , 2006Churi et al, , 2007aChuri et al, , 2007bCong et al, 2009aCong et al, , 200b, 2010Feng et al, 2012). It is also measured by microscope ZKM01-250C (non-contact mode) (Wang and Lin, 1993).…”

“…MRR in UVAG was calculated by the following equation (Prabhakar, 1992;Churi et al, 2005Churi et al, , 2006Li et al 2005aLi et al , 2005bJiao et al, 2005a):…”

Surface roughness in rotary ultrasonic machining: hypotheses and their testing via experiments and simulations

“…It has been shown that RUM can effectively drill ceramics ( . Experimentally-determined relationships between input variables (e.g., tool rotation speed, feedrate, and ultrasonic power) and surface roughness in RUM of ductile materials (titanium and stainless steel) were also reported (Churi et al, 2005;2006;2007ab;Cong et al, 2009b;2010). In addition, it was observed (Cong et al, 2010) when using RUM to drill stainless steel that surface roughness of the machined hole and rod near the entrance side was better than that near the exit side.…”