Surface roughness evaluation using cutting vibrations in high speed turning of Ti-6Al-4V - an experimental approach

Surface Roughness Analysis in High Speed Turning of Ti-6Al-4V Using Coated Carbide Inserts: Experimental and Modeling Studies

“…This caused chip thickness variation and forces generated, thereby producing vibrations between the tool and the workpiece as described by Pramanik in a review on machining of titanium alloys [8]. Similar behaviour has been observed for uncoated carbide inserts during high speed machining of Ti-6Al-4V by the authors [20]. No previous studies have been found regarding the influence of variation of depth of cut on surface roughness parameters at different stages of tool wear during high speed turning of Ti-6Al-4V for coated carbide inserts.…”

“…There have been very few experimental efforts in evaluating the influence of cutting tool vibrations on surface roughness during HSM of Ti-6Al-4V alloys. A similar effort has been made by the authors to study the influence of cutting tool vibrations on surface roughness in HSM of Ti-6Al-4V using uncoated carbide inserts [20]. This study is a continuation of the previous effort and makes use of machining parameters along with tool flank wear and cutting tool vibrations in the experimental evaluation and its correlation with surface roughness parameters Ra and Rt in turning Ti-6Al-4V using coated carbide inserts.…”

“…The high speed turning experiments were carried out on Ti-6Al-4V using uncoated carbide inserts. They concluded that cutting tool vibration has a direct correlation with the surface roughness parameters [20]. In a related work by Pai and DMello, during HSM of Ti-6Al-4V, cutting tool vibrations were found to be sensitive to the variation of tool wear [21].…”

“…Hence it has been considered in this work. Rt (Maximum peak to valley height) has been considered because in a previous similar study made by the authors regarding the influence of machining parameters on surface roughness during turning Ti-6Al-4V using uncoated carbide inserts, it has been found that there is a significant correlation between Rt and cutting tool vibrations, especially in the cutting speed direction [20]. Hence to understand the influence of vibrations on surface roughness, it has been included in this study.…”

“…As an extension to the previous work done using uncoated carbide inserts [20], the experimental conditions have been kept as 200 m min -1 cutting speed, 0.15 mm rev -1 feed rate and 1.2 mm depth of cut, as the reference for presentation and discussion of results.…”