Investigation of the effect of cutting parameter by using different cutting path for end milling operation on surface roughness

The die is important component for production workshop like forging, blanking, punching, etc. the quality of product is depend on die surface so its surface finish should be good. The end milling process which is often encountered in manufacture of die. The surface roughness depend on many parameter like feed rate (F), depth of cut (D), spindle speed (S), cutting path followed by tool, etc. The focus of current report is to find effect of cutter paths used in the milling process on surface roughness. Here the different cutting path are one directional, back & forth and spiral are considered as cutter path strategies. These cutter tool paths very effective on the producing the surface finish of the work piece. The cutter path strategies greatly influenced to the surface finish of the work pieces. The objective of study is to investigate optimum cutting characteristics and effects of cutting path for OHNS steel by usingend mill tools. A full set of experiments for this process would require eighty one different experiments(full factorial design=34) asopposed to the twenty seven which are needed fortheTaguchiversionoftheexperimentusingL27orthogonal array. Results analysis is done by Taguchi Method and ANOVA method which both give approximate same results. ANOVA analysis gives percentage contribution of cutting path, feed rate, depth of cut and spindle speed on surface roughness.