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Studi Eksperimen Pengaruh Parameter Pemotongan Terhadap Performa Mesin Bubut Shenyang Cw6280B Ditinjau Dari Kekasaran Permukaan Benda Hasil Bubutan Di PT Pelayaran Lomasasta Hari Setiawan; Erwansyah; Zaldy Sirwansyah Suzen
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 2 (2026): TURBO: Jurnal Program Studi Teknik Mesin (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i2.5507

Abstract

PT Pelayaran Lomasasta Pangkalpinang is a company engaged in shipping services and manufacturing workshop services. In supporting the quality of ship components and operational efficiency, the reliability and precision of lathe machines are important factors. This study aims to analyze the effect of variations in cutting parameters on the performance of the Shenyang CW6280B Lathe Machine based on the surface roughness value (Roughness Average/Ra) of the workpiece. The method used was an experimental method by varying three main parameters, namely Spindle Speed, Feed Rate, and Depth of cut. The results showed that all three cutting parameters affected the surface quality of the workpiece. Increasing Spindle Speed tended to produce a smoother surface because the cutting process became more stable. Conversely, increasing the Feed Rate significantly increased the surface roughness (Ra) and became the most dominant parameter affecting surface quality. The Depth of cutalso affected the Ra value, but its effect was not as significant as that of the Feed Rate. The test results showed that the surface roughness values ranged from 1.998 µm to 8.728 µm therefore, the Shenyang CW6280B lathe machine is still considered suitable for use and remains within operational tolerance limits for the repair and manufacture of standard ship components. Based on the evaluation results, the optimal combination of cutting parameters can be used as a reference in machining processes to obtain better surface quality and support the efficiency of maintenance and ship component manufacturing processes at PT Pelayaran Lomasasta Pangkalpinang.