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All Journal Jurnal Teknik Mesin Indonesia Jurnal Engine: Energi, Manufaktur, dan Material
Handoko, Handoko
Departemen Teknik Mesin, Sekolah Vokasi, Universitas Gadjah Mada
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Hubungan Antara Produktifitas Pemesinan dan Kualitas Permukaan Bahan UHMWPE Hasil Bubut Silindris dengan Mesin CNC Budi Basuki; Ignatius Aris Hendaryanto; Benidiktus Tulung Prayoga; Handoko Handoko
Jurnal Engine: Energi, Manufaktur, dan Material Vol 7, No 1 (2023)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v7i1.1461

Abstract

UHMWPE (Ultra High Molecular Weight Polyethylene) is a unique polyethylene material widely used in biomedical applications as a bearing material for human body joint implants. The production of these UHMWPE implant components is still commonly performed with machine tools. Operation of these machines requires specific setting machining parameters in order to produce good UHMWPE surface quality without sacrificing the production cost. This research aims to find the relationship between cylindrical lathe machining productivity parameter, MRR (Material Removal Rate), and surface quality of the produced UHMWPE implant. MRR is directly related to production costs. The research was conducted by turning the UHMWPE at five feed rate variations between 0.025 to 0.2 mm/rev. and two depth of cut variations, 0.05 mm, and 0.1 mm, with a cutting speed of 150 m / minute. The test used a Denford FANUC CNC lathe machine with a cemented carbide cutting tool. Product quality was determined by measuring the topography or surface roughness of the material. Results show that the surface quality is inversely related to MRR. This problem can be solved by adjusting the depth of the cut. High productivity can be obtained by cutting thicker material. The difference in the surface quality of the cylindrical lathe machined material in the two depth of cut variations is not significant.
Analisis Dampak Pemasangan Zero Point Clamping System Terhadap Efektivitas Mesin CNC Milling 5 Axis Dengan Metode Overall Equipment Effectiveness Antari, Muhammad Aiman; Hendaryanto, Ignatius Aris; Handoko; Winarno, Agustinus
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The manufacturing industry sector in Indonesia is experiencing rapid development, significantly contributing to the national GDP. CNC milling 5-axis technology, offering high accuracy and efficiency, is increasingly being used across various industries. However, clamping process issues often hinder the optimal performance of these machines. This study analyzes the impact of implementing the Zero Point Clamping System on the effectiveness of CNC milling 5-axis machines using the Overall Equipment Effectiveness (OEE) method. The study results show a significant increase in the Availability value, which rose by 10.7% from 80.3% to 91%, and the Performance Rate, which increased by 2.9% from 93.4% to 96.3%, while the Quality Ratio remained unchanged. This improvement led to the OEE value increasing from 75% to 87.5%, indicating a 12.5% increase in effectiveness. The implementation of the Zero Point Clamping System significantly reduced Setup and Adjustment time from 13.8% to 4.7% and Idling and Minor Stoppage time from 5.9% to 4.4%, as well as reducing Reduced Speed Losses from 5.25% to 3.5%. These results demonstrate that the application of the Zero Point Clamping System can enhance the effectiveness of CNC milling 5-axis machines by reducing downtime and increasing machine speed, resulting in higher availability and improved machine performance. Consequently, this innovation makes a tangible contribution to improving operational efficiency and the competitiveness of Indonesia's manufacturing industry. Keywords: CNC milling 5 axis, Effectiveness, Overall Equipment Effectiveness, Zero Point Clamping System
Analisis Dampak Pemasangan Zero Point Clamping System Terhadap Efektivitas Mesin CNC Milling 5 Axis Dengan Metode Overall Equipment Effectiveness Antari, Muhammad Aiman; Hendaryanto, Ignatius Aris; Handoko; Winarno, Agustinus
Jurnal Teknik Mesin Indonesia Vol. 19 No. 2 (2024): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The manufacturing industry sector in Indonesia is experiencing rapid development, significantly contributing to the national GDP. CNC milling 5-axis technology, offering high accuracy and efficiency, is increasingly being used across various industries. However, clamping process issues often hinder the optimal performance of these machines. This study analyzes the impact of implementing the Zero Point Clamping System on the effectiveness of CNC milling 5-axis machines using the Overall Equipment Effectiveness (OEE) method. The study results show a significant increase in the Availability value, which rose by 10.7% from 80.3% to 91%, and the Performance Rate, which increased by 2.9% from 93.4% to 96.3%, while the Quality Ratio remained unchanged. This improvement led to the OEE value increasing from 75% to 87.5%, indicating a 12.5% increase in effectiveness. The implementation of the Zero Point Clamping System significantly reduced Setup and Adjustment time from 13.8% to 4.7% and Idling and Minor Stoppage time from 5.9% to 4.4%, as well as reducing Reduced Speed Losses from 5.25% to 3.5%. These results demonstrate that the application of the Zero Point Clamping System can enhance the effectiveness of CNC milling 5-axis machines by reducing downtime and increasing machine speed, resulting in higher availability and improved machine performance. Consequently, this innovation makes a tangible contribution to improving operational efficiency and the competitiveness of Indonesia's manufacturing industry. Keywords: CNC milling 5 axis, Effectiveness, Overall Equipment Effectiveness, Zero Point Clamping System
Analisis Kekuatan Struktur Pada Desain Traction Rod Lokomotif Kereta Api Dengan Metode Finite Element Analysis (FEA) Irsad Makhbulloh Ilyasa; Ignatius Aris Hendaryanto; Handoko; Agustinus Winarno
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1929

Abstract

The structural strength of locomotive bogies is crucial for bearing operational loads and absorbing engine vibrations to efficiently transmit torque to the train wheels. The traction rod, a critical component in this system, plays a key role in transferring power from the main engine to the locomotive wheels. With the CC300 locomotive engine producing 2.200 hp, the traction rod experiences significant loads, necessitating regular maintenance. Given that this component is currently imported, the company is striving to redesign the traction rod to ensure strong structural integrity for local production, reducing dependency on imports and optimizing maintenance costs. The redesign involves adding structures to the existing design to even out stress distribution and enhance safety factors. Finite Element Analysis (FEA) is utilized to compare the structural strength between the original and redesigned designs, resulting in significant improvements in load-bearing capacity and deformation reduction. Simulation results show variations in stress, deformation, and safety factors among the original design, the redesign by the company, and the redesign by the researchers. The original design exhibits a stress of 194,64 MPa, deformation of 4,2817 mm, and a safety factor of 1,2844. The company's redesign achieves a stress of 438,37 MPa, deformation of 3.4356 mm, with a safety factor of 0,5703. Meanwhile, the researchers' redesign shows a stress of 154,05 MPa, deformation of 4,4812 mm, and a safety factor of 1,6288.
Kekuatan pergelangan kaki prostetik pergelangan kaki dengan bahan baja dan aluminium Handoko, Handoko; Dwi Setyana, Lilik; Basuki, Budi; Hari Priambodo, Bambang; Isyroudin, M. Habib; Kurniawan, Yani
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.812

Abstract

Leg prosthetics as a device to increase the mobility of people with disabilities need to be supported in their development, especially in terms of comfort. Modifications to make prosthetics more comfortable to use are by utilizing the elastic properties of springs and base plate materials and dampers. This study analyzes the strength of steel and aluminium prosthetic base components in bearing the dynamic load of user's body. The analysis uses computational techniques with the finite element method. Computational results show that the most critical part of prosthetic, i.e. the base, is safe with maximum working stresses of 31,56 MPa for steel and 44,03 MPa for aluminium. Both materials are able to withstand the working stress.
Co-Authors Agustinus Winarno Antari, Muhammad Aiman Benidiktus Tulung Prayoga Budi Basuki Budi Basuki, Budi Dwi Setyana, Lilik Hari Priambodo, Bambang Ignatius Aris Hendaryanto Irsad Makhbulloh Ilyasa Isyroudin, M. Habib Yani Kurniawan, Yani