PENGARUH SUDUT POTONG DAN KECEPATAN PUTAR SPINDEL TERHADAP GETARAN PAHAT DAN KEKASARAN PERMUKAAN PADA PROSES BUBUT MILD STEEL ST 42

Reza, Habib Nur (2023) PENGARUH SUDUT POTONG DAN KECEPATAN PUTAR SPINDEL TERHADAP GETARAN PAHAT DAN KEKASARAN PERMUKAAN PADA PROSES BUBUT MILD STEEL ST 42. Sarjana (S1) thesis, Universitas Islam "45" Bekasi.

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Abstract

In the world of the manufacturing industry, the machining process is one of the main processes in the metal manufacturing, one of them is the turning process. In the turning process it is difficult to get good product quality, this is caused by several factors such as determining the spindle rotation speed, and the angle of cut to be used. The vibration of the tool and the surface roughness of the workpiece greatly affect the quality of the product being made. Vibration on the chisel will cause a lack of accuracy in the measurement of the product being made, The level of workpiece surface roughness is very important for planning machining processes related to friction, fatigue resistance, and wear. The main objective of this study was to determine the effect of the ideal cutting angle and spindle rotation speed to produce tool vibration and low surface roughness in St 42 steel material in the turning process. This research is an experimental study using materials with a diameter of 20 mm and a length of 100 mm, with 3 kinds of cutting angles and 3 kinds of spindle rotation speed. The results of this study can be concluded that the spindle rotation speed of 400 Rpm with an angle of cut of 80º produces the lowest vibration of 0.34 mm/s and the lowest level of surface roughness is obtained at a spindle rotation speed of 500 Rpm with an angle of cut of 80º which is equal to 13.756 µm.

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