Attachment are specially designed to facilitate manufacturing processes. Essentially, the function of such attachment tools is to ensure production quality, reduce costs, improve production time efficiency, and increase overall output. In this study, efforts were made to introduce variations of feeding modeling in the turning process using an additional attachment tool. This attachment is insta…
This research was commenced with consideration about the emergence of cutting tool damages upon a certain duration of cutting in a metal turning process, caused by the increase of cutting tool temperature during the machining process. In this research, the effects of two parameters in turning process, namely feed rate and depth of cut, on the thermal diffusivity of the cutting tool are examined…
Sampai saat ini, pemakaian pahat HSS pada industri kecil dan menengah masih banyak digunakan terutama untuk pemesinan umum yang tidak memerlukan ketelitian khusus. Hal ini dikarenakan pahat tersebut harganya murah dan mudah didapat. Namun, dari para penjual pahat tersebut tidak disertai data/spesifikasi tentang komposisi, kondisi optimum umur pahat, dan sebagainya. Berangkat dari masalah terseb…
The lathe is a tool that moves the workpiece by rotating the object, then directs the tool parallel to the rotating axis on the workpiece. During the turning process, a number of parameters are required to achieve the desired results including depth of cut, feeding, cutting speed, and cutting time. The continuous metal cutting process also causes temperature changes in the workpiece and tool. T…
The maintenance of lathes in the educational laboratory plays a crucial role in supporting the effectiveness of student practical learning. This research aims to develop a preventive maintenance guidebook based on best practices for lathes in the Mechanical Engineering Education Laboratory of Sriwijaya University. The method used is the 4D development model (Define, Design, Develop, Disseminate…
Machining process is a process that is carried out by changing the shape of metal material to what we want. One type of machining process is the turning process. Turning process is a process that is carried out by means of the workpiece spindle and tool cutting workpiece. Turning is very influential on the use of the parameter that exist in the machining. Turning parameters consist of cutting s…
Pahat merupakan suatu alat potong pdaa proses pemesinan untuk membentuk benda kerja , banyak jenis pahat salah satunya pahat karbida yang memiliki keuletan yaang tinggi. Cairan pemotongan adalah minyak sederhana yang diaplikasikan untuk mendinginkan dan melumasi alat pahat dan benda kerja. Selaain itu juga berfungsi sebaagai pembersih, untuk memperhalus permukan benda kerja dan pembuang gram. P…
In this ihesis discusses about the comparative quality cutling tools and the workpiece surface roughness. The testing melhods which were applied in this sludy is Hardness testing performed on the workpiece of aluminum and low carbon Steel using a Vickers test equipment. Testing continued on the workpiece surface roughness after lurning with the same feed motion, and depth of cut and spindle rot…
This test is aimed at mini lathes intended for small industries. Because the role of machine tools, especially lathes, is very necessary in the industrial world. The tolerance standards for machine tool suitability testing (acceptance standards) used as guidelines are procedures developed by (Schlessinger, 1901). in the book Testing Machine Tools made by Dr. Georg Schlesinger. The test results …
This study aims to determine the application of Occupational Safety and Health (K3) of class XI students during lathe practice in the Workshop of the Department of Mechanical Engineering SMK Negeri 2 Palembang. This type of research is a quantitative research with a descriptive approach, a population of 99 students, who are class XI students of Mechanical engineering SMK Negeri 2 Palembang. Sam…
Salah satu parameter yang berpengaruh pada suhu pemotongan adalah kedalaman potong. Diketahui bahwa kedalaman potong bersamaan dengan kecepatan potong, sifat material, dan parameter lainnya berpengaruh terhadap temperatur pemotongan. Tujuan utama dari penelitian adalah untuk membandingkan besarnya pengaruh cutting speed dan depth of cut terhadap distribusi temperatur dan heat flux yang terjadi …
A lathe is a production machine in which the workpiece on the spindle will work simultaneously with the feeding process. Fixture is production equipment that holds the workpiece firmly so that the necessary machining work can be done. In the research being carried out is to make chuck tools on lathes so that they are able to do milling like milling machines. Tool drawing is done using Solidwork…
Kekerasan pada baja dipengaruhi oleh karbon yang terkandung didalamnya, namun kekerasan dapat ditingkatkan maupun diturunkan dengan perlakuan panas yang sesuai. Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh perlakuan panas pack carburizing, quenching dan double quenching terhadap kekerasan baja st 40. Pada proses pack carburizing spesimen dipanaskan dengan suhu 850oC dan hol…
The purpose of the study was to find out how the students' awareness of OSH behavior in machining practices at the lathe workshop of SMK Ganesha 1 Sekampung. This study uses descriptive research methods and data collection techniques used in this study to obtain data are questionnaires and interviews. From the questionnaire data, it can be seen that of the 24 students as research subjects, 16.7…
Minat siswa dan pengetahuan dasar praktik pemesinan merupakan hal terpenting dalam pembelajaran Teknik Pemesinan. Tujuan dalam Penelitian ini untuk mengetahui hubungan minat siswa dan pengetahuan dasar praktik pemesinan dengan prestasi belajar pada mata pelajaran Teknik Pemesinan Bubut siswa SMKN Sumsel Palembang. Pada penelitian ini menggunakan metode deskriptif kuantitatif dan uji korelasi va…
Coolant has a special function in the machining process, one of which is able to determine the roughness value of the cutting process. Vegetable oil is an alternative refrigerant which has almost the same properties as the manufacturer's coolant. This study aims to find the right formula of vegetable oil and water as a coolant in the turning process. The cooling variations used in this study we…
Turning is a machining process that uses a chisel with one cutting edge to remove material from the surface of a rotating workpiece. The turning process uses a Jhung Metal Machinery Co JII 530x1100 lathe in the Production workshop at the Vocational Training Center (BLK) and uses a carbide chisel with low carbon steel as well as variations in cutting speed and infeed depth from the turning proce…
Pegas daun mobil NISSAN CK12 termasuk dalam golongan baja pegas. Sifat utama dari baja pegas adalah modulus elastik dan batas elastik. Penelitian ini bertujuan untuk menganalisis umur dan keausan pahat berbahan pegas daun mobil NISSAN CK12 dan pahat HSS. Penelitian ini menggunakan mesin bubut Konvesnsional dan alat Mikroskop Elektronik untuk mengambil gambar mikro dari kedua mata pahat tersebut…
Setiap material mengalami proses bubutan akan menyebabkan konsentrasi tegangan di daerah yang mendapatkan gaya tekan, terutama daerah sudut gram yang mendapat tekanan dari mata pahat. Jika tegangan sudah mencapai posisi maksimum kekuatan yield logam, sehingga akan terjadi deformasi plastik. Oleh karena itu analisis ini adalah untuk menemukan sudut rake yang tepat dalam proses balik. dan menghit…