Experimental investigation to optimize tool performance in high-speed drilling: a comparative study

  • Balla Srinivasa PrasadEmail author
  • D. S. Sai Ravi Kiran
Technical Paper


In this study, the influence of drilling parameters on circularity error, tool tip temperature and flank wear is investigated while drilling of Ti–6Al–4V alloy specimens with dissimilar cutting tool materials under dry machining conditions. In addition, optimal control factors for circularity error, tool tip temperature and flank wear have been determined using Taguchi–Grey relational analysis. Rotational speed of the spindle, feed rate and drill bit material are considered as control factors. Numerous drilling experimental runs have been performed employing L27 orthogonal array on a CNC vertical machining centre with 12Ø-mm-diameter holes on 10-mm-thick plates. An infrared thermal camera FLIR E60 is employed to record the temperature at tool chip interface, and Kistler 8793 tri-axial accelerometer is used to get hold of vibration data in real time. Analysis of variance has been carried out to ascertain the most substantial control factors among rotational speed, feed rate and drill bit material and also to establish the effects of the same over circularity error (Cr), temperature (T) and flank wear (VB).


Multi-objective optimization Circularity error Drilling Infrared thermography Grey relational analysis (GRA) 



This work is supported by the Science and Engineering Research Board, Department of Science Technology, Govt. of India under Empowerment and Equity Opportunities for Excellence in Science Scheme with a Grant No: SB/EMEQ-265/2014. Authors would like to thank mentor Sri. P.V.S. Ganesh Kumar, Scientist-H, Associate Director, Naval Science Technological Laboratory Visakhapatnam, India for providing the experimentation test facility and necessary equipment.


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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2019

Authors and Affiliations

  1. 1.Mechanical EngineeringGIT, GITAMVisakhapatnamIndia
  2. 2.Mechanical EngineeringANITSVisakhapatnamIndia

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