ANALISIS PENGARUH VARIASI FEED PER TOOTH DAN KECEPATAN PUTARAN SPINDLE TERHADAP TINGKAT KEKASARAN PERMUKAAN ALUMUNIUM MELALUI PROSES CNC MILLING SUPERMILL ES-200-S

HALIMY, DARMANSYAH (2022) ANALISIS PENGARUH VARIASI FEED PER TOOTH DAN KECEPATAN PUTARAN SPINDLE TERHADAP TINGKAT KEKASARAN PERMUKAAN ALUMUNIUM MELALUI PROSES CNC MILLING SUPERMILL ES-200-S. Sarjana (S1) thesis, Universitas Islam "45" Bekasi.

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Abstract

The CNC machining industry is used to work products with complex surface shapes and accurate precision. In the milling process, surface roughness is very important. In this study, the CNC milling process was carried out on aluminum material with variations in feed per tooth and spindle rotation speed. The purpose of this study was to determine whether or not the variation of feed per tooth and spindle rotation speed on the surface roughness test of aluminum with the clarification of the RAL ANOVA method and to determine the combination of feed per tooth and spindle rotation speed that resulted in the roughness value of aluminum. This study uses SPSS software on the CRD method (Completely Randomized Design). Parameters that were varied were feed per tooth 0.02 mm, 0.04 mm, and 0.06 mm with spindle rotation speed of 3500 Rpm, 4500 Rpm, and 5500 Rpm. Variations in feed per tooth and spindle rotation speed have an effect on surface roughness. The results of the RAL method using SPSS show the effect on variations in feed per tooth, variations in spindle rotation speed, and the combination of feed speed per tooth with spindle rotation speed can be seen from the sig value, which is 0.000, which is smaller than the sig level = 0.05. It is stated that this variation has a significant effect on surface roughness. So it was proven to use feed per tooth variations which were more influential with a calculated F result of 281.452, while the variation in spindle rotation speed with a calculated F result of 89.301, and a combination of feed variation per tooth with spindle rotation speed with a spindle rotation speed with a calculation F result of 52.281 was greater than F table 0.05. The combination of feed per tooth and the rotational speed of the CNC milling spindle increases the surface roughness value. The results of the CNC milling process have the highest roughness value, namely 0.943 m at feed per tooth 0.06 mm at a spindle speed of 4500 Rpm and the lowest at 0.281 m at a feed per tooth 0.02 mm at a spindle speed of 4500 Rpm. Then the roughness value already meets the standards that can be carried out by the CNC milling machining process.

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