Abstract
The surface roughness quality of machining product plays important role when it contacted with other machine components. That quality depends on several parameters setting, such as material, cutting tool, cutting condition and operator skill. The aim of this study is to obtain the optimum setting of turning parameters by using Taguchi method. Three control factors: cutting speed, depth of cut, and feeding at three different levels are selected. A series CNC turning process on AISI 1045 material were performed using L9 (3)3 orthogonal array with cutting fluid. Insert carbide cutting tool is used in the experiment. In order to reveal the optimum machining parameter, smaller the better is quality characteristic selected for surface roughness examination of workpiece. Analysis of experiment results revealed that higher cutting speed, low feed, low depth of cut respectively, provides fine surface quality of machined workpiece. Moreover, feed f parameter was found most influence to the surface rougness quality with 53.73% contribution, cutting speed v provides 23.28% contribution, and depth of cut a provides 17.87% contribution. Confirmation experiment shows that level 3 of cutting speed, level 2 of cutting depth, and level 1 of feed deliver smoothest machined surface of Ra 0,46 µm.
Highlights
The quality of machining product is very important to be taken into account, to be accepted by the market
Surface roughness is an element of surface texture and plays a key role in determining how the part will associate with its other object
The simple and practical way of the Taguchi method is carried out to achieve the combination of the optimum factors
Summary
The quality of machining product is very important to be taken into account, to be accepted by the market. One of the crucial quality the machining product is surface roughness. The rough of the part surface wear out more often and provides more friction than a smoother surface. Surface roughness is one of the surface qualities of a workpiece that is interesting to explore because many factors influence the result. This quality characteristic is a measure of machined surface quality and a factor that contribute to production cost. Lower roughness indicates a smoother part surface. It describes the geometry of the workpiece surface and concatenated with the surface texture
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