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Studi Komparasi Pengaruh Kecepatan Potong Tinggi dan Konvensional terhadap Kekasaran Permukaan dan Waktu Proses Bubut Joachim, Daniel; Rosehan , Rosehan; Lubis , Sobron Yamin
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16389

Abstract

The number of manufacturing industry growth in Indonesia is increasing over time. Based on the data obtained, the manufacturing industry in Indonesia recorded growth of 3.9% from July to August 2020. This study aims to analyze the effect of cutting speed on the surface roughness of S45C steel and to find out the production time for high speed cutting machining processes. This study used an experimental method, using a transverse/cylindrical turning method. Transverse turning is a lathe process when the cutting tool moves parallel or linear to the spindle axis. The test specimen will be machining starting with determining the independent parameters; feed (f) 0.2mm/rev, depth of cut (depth of cut) 0.1mm, length of cut (Lt) 100mm, then determine the dependent parameter by varying the speed of cut (Vc) starting from 125m/min to 625m/min. Based on the results of the test data obtained, it shows that (1) The higher the cutting speed, the lower the surface roughness value. This is caused by the process of plastic deformation and thixotropy phenomena. (2) The higher the cutting speed, the lower the cutting time. This is caused by the annealing phenomenon during the turning process.
Pengaruh Variasi Parameter Proses Pembubutan Poros untuk Menghasilkan Kondisi Pemotongan Ekonomik dan Kondisi Pemotongan Produktif Sunardi, Edo; Lubis , Sobron Yamin; Rosehan , Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16414

Abstract

This study aims to find out how to determine the optimal shaft turning process parameters to produce minimum production costs and maximum production quantities, then to determine the optimal shaft turning process parameter values to produce minimum production costs and maximum production quantities in this study. In this study, an experimental research method was used which began with making working drawings of the shaft up to the turning process. Based on the results of the test data obtained, it shows that , the conclusions obtained include: The greater the value of the cutting speed used, the machining time will shorten. This can be proven by an example using the same feed, namely 0.25 mm/r. The greater the value of the feed used, the machining time will be shortened. This can be proven by an example using the same cutting speed of 180 m/min. In the use of the parameter roughing cutting speed of 180 m/min and finishing cutting speed of 251 m/min. The greater the value of the cutting speed used, the lower the surface roughness value.
Pengaruh Kecepatan Potong terhadap Kekasaran Permukaan Cetakan pada Mesin Milling CNC Thomas, Felix; Lubis , Sobron Yamin; Rosehan , Rosehan
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.16417

Abstract

This study aims to determine the appropriate cutting speed in the milling process to produce good die surface roughness on 6061-T6 aluminum workpieces and to determine the effect of the cutting speed parameter of 30-50 mm/minute on surface roughness. Types of research methods and data collection will begin through a literature study process, by making working drawing designs then making chisel grooves and calculating VC and other parameters, followed by the milling process. Based on the results of the test data obtained, it shows that (1) Based on the graph obtained from the data table, the cutting speed (Vc) from the comparison of the base and wall between the core and cavity has where in this position the cutting speed (Vc) is 50 mm/min, which is the cutting speed (Vc) is the most optimal with engine speed (n) 1592.36 Rpm, Infeed speed (Vf) 636 mm/rev, and a constant Depth Of Cutting at 0.5. (2) The conclusion of this cutting speed (Vc) is that a high cutting speed will take faster machining time and have smoother surface roughness. (3) High cutting speed also does not justify any cutting speed. High speed must have a smooth surface roughness result. (4) Determine the characteristics of the material and then determine the right tool eye.