Analisis Pengaruh Variasi Kecepatan Spindle Dan Kedalaman Pemakanan Pembubutan Terhadap Kekasaran Permukaan Baja St41 Dan Keausan Mata Pahat Hss

Lisanto, Michael Dion (2026) Analisis Pengaruh Variasi Kecepatan Spindle Dan Kedalaman Pemakanan Pembubutan Terhadap Kekasaran Permukaan Baja St41 Dan Keausan Mata Pahat Hss. Undergraduate thesis, UPN Veteran Jawa Timur.

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Abstract

This study was conducted using direct data collection (experimental) to determine and analyze the surface roughness of ST41 steel workpieces and to analyze the wear rate of cutting tools that have undergone the turning process. In addition, this study also aimed to identify the optimal parameters for use during the turning process. This study uses two main parameters to be tested during data collection: spindle speed and cutting depth. These parameters—spindle speed and cutting depth—each employ three levels in accordance with the existing experimental design. The study utilizes the Taguchi method with an Orthogonal Array L27. The calculations in this study will also be supported by analysis using the Signal to Noise (S/N) Ratio and Analysis of Variance (ANOVA) to determine and evaluate the influence of each parameter on the specified response variables, namely the Surface Roughness (Ra) value and the wear rate of the cutting tool used, by displaying and measuring the difference in material removed. The results of this study yielded the highest Ra value at a spindle speed of 200 RPM and a cutting depth of 0.8 mm, resulting in an Ra value of 6.587 µm; the lowest Ra value occurred at a spindle speed of 360 RPM with a cutting depth of 0.2 mm, resulting in an Ra value of 0.924 µm. Another research result regarding the tool wear rate also yielded the highest and lowest wear rates, where the highest wear rate occurred at a spindle speed of 200 RPM with a cutting depth of 0.8 mm, resulting in a wear difference of 0.21 mm in length units and 0.23 grams in weight units, while the lowest tool wear rate occurred at a spindle speed of 200 RPM with a cutting depth of 0.2 mm, resulting in a wear difference of 0.05 mm per unit length and 0.04 per unit weight. Overall, this study is useful for providing information that proper machining parameter settings can produce good workpiece surface quality and minimize tool wear during machining. Keywords : Spindle Speed, Depth of Cut, Surface Roughness (Ra).

Item Type:

Thesis (Undergraduate)

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