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Mustafa Akbar
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Engineering

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Perancangan Dan Analisis Struktur Mekanik Prototipe Mesin CNC Milling 3-Axis Devri Naldy; Syafri Syafri; Mustafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Computer Numerically Controlled (CNC) Machine is a machine tool equipped with mechanical systems and computer-based controls that capable to read the instruction code such as N, G, F, T, etc. These codes will be instructed to CNC machine interface system, so that the machine can work in accordance with the listing program that has been created. In general, the selling price of the machine is expensive. Therefore, in this study a low cost CNC machine has been designed for small and medium enterprises (UKM). Design stage consist of a needs analysis, preparation of the technical specifications of the product, design concept of the product to find alternative concept product and choose the concept product. From design concept to be developed do static analysis on mechanical components CNC machines that include stress and deformation due to loading and its own weight. Static analysis is conducted in two ways, with manual calculations and finite element analysis using software Autodesk Inventor 2012 Student Edition. Results of static analysis shows that stress occurs at 7.122 MPa on the z-axis, 72.31 MPa on the y-axis and 2,202 MPa on the x-axis. Deformation is equal to 0.003644 mm on the z-axis, 0.5404 mm on the y-axis and 0.005173 mm on the x-axis.Keyword : CNC Machine, Autodesk Inventor, stress, deformation
Desain Mesin Penghancur (Shredder Machine) Batang Kelapa Sawit Berbasis Metode Design For Manufacture and Assembly (DFMA) Roni Wandra; Yohanes Yohanes; Mustafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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DFMA is defined as the design of a product or component which can facilitate the process of manufacturing and assembly process with other components to become a unified product. The utilization of palm oil is only limited to the fruit to produce oil, and to a certain extent the utilization of fiber fruit bunches and fronds to producefiber. Utilization in the form of particle board using oil palm trunk. From basic research on the utilization of oil palm trunk, then it needs tools to process oil palm trunk into raw material that will be processed to be particle board, paper materials and cattle food. There are several steps to design a shredder machinei.e DFMA methods for determining the shredder machine design with easy assembly and manufacture, calculations to determine the motor power is using, and the simulation of structural strength testing using Autodesk Inventor to get the value of the safety factor of the frame and the shaft. The results obtained efficiency values assembly design is 3.14% .Then, the calculation results of the machine element motor power required is 3 Hp at 1400 rpm rotation for oil palm trunk with a surface area of 1 cm x 10 cm. The analysis result of the frame structure and shaft used Autodesk Inventor to obtain the safety factor value of the frame is 6.41 and the shaft is 4.3.Keywords: DFMA, Shredder Machine, Oil Palm Trunk, Safety Factor, Assembly Efficiency.
Perancangan Ulang Wire Rope Pada Sistem Hoisting Overhead Travelling Crane Kapasitas 55 Ton Di Area Crusher PT. Semen Baturaja (Persero) Tbk Indonesia Riski Dwi Prasetio; Syafri Syafri; Mustafa Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Hoisting system on overhead traveling crane capacity of 55 tons in the crusher area of PT. Semen Baturaja is designed for material handling processes, especially if it is needed in the event of equipment disruption or trouble in the area and also during factory shutdown. The main components of the hoisting mechanism consist of wire rope, pulley, drum, hook, lifting motor and mechanical brake. In this design initial data obtained from observations of objects and through discussions with resource persons in the field. Calculations and design up to determine the safe number of all the main components is obtained based on the appropriate literature. In this design the type of wire rope 6 x 41 + 1 Fiber 32 mm diameter is obtained and the estimated life of the wire rope is approximately 1 year with the assumption of 24 hour usage. Keyword : Overhead travelling crane, hoisting system, wire rope,design
Co-Authors Devri Naldy Riski Dwi Prasetio Roni Wandra Syafri Syafri Yohanes Yohanes