Cutting force and chip reduction coefficient is the important index of machinability as it determines the power consumption and amount of energy invested in machining actions. It is primarily influenced by process parameters like cutting speed, feed and depth of cut. This paper presents the application of Taguchi's parameter design to optimize the parameters for individual responses. For multi-response optimization, Taguchi's quality loss function approach is proposed. In the present investigation, optimal values of cutting speed, feed and depth of cut are determined to minimize cutting force and chip reduction coefficient during orthogonal turning. The effectiveness of the proposed methodology is illustrated through an experimental investigation in turning mild steel workpiece using high speed steel tool.

ABSTRACT:Internal machining processes, such as boring operation are challenged by inherent tool vibrations. These vibrations can be damped to considerable extent employing suitable arrangement to dissipate part of strain energy. The present research has used a set of metal laminates at the tool and tool holder interface. The arrangement which promotes frictional energy dissipation has resulted in improvement of machinability, measured in terms of Chip reduction Coefficient.

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