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Optimization of Machining Parameters in Hard Turning of Automotive Gears with PCBN tool using Taguchi Method


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DOI: https://doi.org/10.15866/ireme.v15i5.21070

Abstract


Hard turning, a comparatively modern machining technology, can replace the conventional grinding process for finishing of parts made out of steel. Nowadays, industries prefer hard turning to grinding. This is due to some of the most distinctive features of hard turning over grinding, such as lower machining time and manufacturing cost, and the achievement of grinding equivalent quality characteristics on parts and machining can be possible in a dry environment, which eliminates the hazardous effect of cooling media used during machining on the environment and humans. However, in hard turning, machining parameters (cutting speed-vc, depth of cut-ap, and feed rate-f) are critical for achieving specified quality attributes and establishing a cost-effective setup. The influence of machining parameters on workpiece surface roughness (Ra) and tool flank wear (VB) has been investigated in this research using the Taguchi Design of Experiment (DOE) approach, as well as signal to noise (S/N) ratio, and Analysis of variance (ANOVA) techniques. The experiments have been carried out on automotive gear made of SAE-AISI 5120-compliant 20Mn5Cr5 alloyed hardened steel. The CBN cutting tool has been used for this research.
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Keywords


ANOVA; CBN; Ceramic; Grinding; Hard turning; Taguchi

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References


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