Statistical analysis of the effect of machining parameters on the straightness error of high carbon steel turned components
Keywords:Cutting speed, Straightness error, Feed rate
The objective of the present work is to study the effect of machining parameters on the straightness error of cylindrical parts of high carbon steel (SAE 1095) having hardness 210 BH produced in a lathe machine. The considered turning parameters that affect the straightness error are cutting speed ,feed rate and depth of cut at three levels for each parameter with two replicates of different length by diameter ratio for instance there are 3x3x3x2= 54 specimens to be machined. The straightness error are measured for each specimen and statistical analysis are carried out .The analysis of variance performed on the measured data shows that the cutting speed is the most significant factor affecting straightness error, secondly the feed rate and lastly the depth of cut. Also, the interaction cutting speed-depth of cut and cutting speed-feed rate-depth of cut affect the straightness error of the machined work piece too. The present work is provided with three dimensional surface graphs which show low straightness error at high cutting speed for each considered level of feed rate and depth of cut.
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