Title: Optimisation of turning parameters for minimising specific cutting energy with use of different cooling/lubricating techniques

Authors: D. Cica; B. Sredanovic; S. Tesic; D. Kramar

Addresses: Faculty of Mechanical Engineering, University of Banja Luka, Banja Luka 78000, Bosnia and Herzegovina ' Faculty of Mechanical Engineering, University of Banja Luka, Banja Luka 78000, Bosnia and Herzegovina ' Faculty of Mechanical Engineering, University of Banja Luka, Banja Luka 78000, Bosnia and Herzegovina ' Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana 1000, Slovenia

Abstract: The objective of this paper is optimisation of the machining parameters using the Taguchi method to obtain minimum specific cutting energy. Considering the machining parameters such as speed, depth of cut and feed rate, a series of turning experiments were conducted to measure the main cutting force required to calculate specific cutting energy. The experiments were performed on C45E steel bars using coated carbide inserts under different cooling/lubrication conditions, namely, flooded cooling, minimal quantity lubrication and high pressure cooling. The concept of signal-to-noise ratio was employed to find the optimal levels of the process parameters so as to get the lowest value of specific cutting energy. Analysis of variance was applied to estimate the significance of control factors affecting specific cutting energy. Finally, the results of confirmation experiments with optimal process parameters settings showed that the Taguchi method can be successfully applied in the optimisation of process parameters for minimum specific cutting energy.

Keywords: specific cutting energy; optimisation; Taguchi method.

DOI: 10.1504/IJMMM.2020.105665

International Journal of Machining and Machinability of Materials, 2020 Vol.22 No.2, pp.153 - 164

Received: 28 Nov 2018
Accepted: 16 Jan 2019
Published online: 09 Mar 2020 *

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