Experimental investigation to optimize the machining parameters and analysis of variance in machining aluminium alloys using taguchi technique

Abstract

newlineThe manufacturing cost can be minimized by reducing the machining cost through optimization of machining environment by optimizing the machining parameters like cutting speed, feed, depth of cut, etc. and proper setting of various parameters during machining. Since machining operation is one of the major cost centers in manufacturing the product, the production cost can also be reduced by reducing the lead time and proper selection of machine tools, cutting tool material, tool geometry and cutting parameters These variables govern the economics of machining operations. Therefore an attempt has been made to carry out an experimental investigation by using Taguchi technique mainly to find and correlate the technological factors to the economics of machining process. The Taguchi method is systematic application of design and analysis of experiments. It is an effective approach to produce high quality products at relatively low cost. Therefore Taguchi method is used to investigate the multiple performance characteristics in the turning operation. newline newlineThis research work deals with experimental investigations carried out to optimize machinability of commercially available Al6463 and Al7068 Aluminium alloys and to obtain optimum process parameters. The experiments were carried out on the CNC machines taking Al6463 and Al7068 as the workpiece materials with carbide tools of various nose radii for turning and drill bits of different diameters for drilling operation. Levels of cutting speeds, depth of cuts, feed rates etc. will be selected as most important parameters which influence the machinability characteristics of Aluminium alloys. The Taguchi s orthogonal arrays will be employed to achieve the objective. newline