Pengaruh Jenis Material Benda Kerja Terhadap Getaran Saat Proses Penyayatan Dan Kekasaran Permukaan Produk Yang Dihasilkan Dengan Menggunakan Mesin Bubut

Abstract

The manufacturing industry cannot be separated from the machining process, one of which is the turning process. The turning process is a cutting process that uses machine tools to produce cylindrical shapes and can also be used to make threads, drilling and leveling objects. Machining vibration is a vibration that occurs during the cutting process. This research uses steel types AISI 4140, AISI 4340, and S45C which are commonly used in machine components. The purpose of this study is to determine the relationship between the vibration of the lathe during the cutting process with the surface roughness of the resulting product. The method used in this study focuses on testing the surface roughness of the workpiece and the resulting vibrations on the C6127A lathe with a variety of materials, namely using steel AISI 4340, AISI 4140, and S45C using HSS chisel type and spindle speed of 265 rpm with an infeed depth of 1 mm. In this research, the vibrations in the turning process of AISI 4340 steel have a vibration of 3.81 mm / s2, AISI 4140 steel has a vibration of 3.75 mm / s2, and in S45C steel has a vibration of 3.86 mm / s2. While the results of the surface roughness on Aisi 4140 steel has a roughness of 14.781 μm, the AISI 4340 steel has a roughness of 12.516 μm, and the S45C steel has a roughness of 15.190 μm. It can be concluded that the greater the carbon content in the steel, the greater the vibration and roughness generated during the cutting process.