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Pengaruh Nozzle Temperature Dan Layer Height Terhadap Akurasi Dimensi Produk Ulir Menggunakan Filamen PETG Zulfitriyanto, Zulfitriyanto; Ferninda Putri, Sherin; Pristiansyah, Pristiansyah
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 1 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i1.320

This study examines the effect of nozzle temperature and layer height on the dimensional accuracy of threaded products using Fused Deposition Modeling (FDM) technology with PETG filament material. Experiments were conducted using Taguchi method with L9 factorial design and three repetitions. The parameters tested included nozzle temperature (235°C, 240°C, 250°C) and layer height (0.10 mm, 0.15 mm, 0.20 mm) variations, with a constant print speed of 40 mm/s. The test specimen was a M16×2 6g thread with a height of 20 mm. The results show that layer height has a more significant effect than nozzle temperature on dimensional accuracy. Optimal diameter dimensional accuracy was achieved at a combination of nozzle temperature 240°C and layer height 0.15 mm with an average diameter of 15.82 mm, while optimal height dimensional accuracy was obtained at a combination of nozzle temperature 240°C and layer height 0.10 mm with an average height of 20.01 mm. This research contributes to the optimization of 3D printing process parameters for threaded products.

Perancangan Mesin Perontok Padi Dengan Sistem Rotari Pristiansyah, Pristiansyah; Hasdiansah, Hasdiansah; Rohman, Habibu; Saputra, Rahman; Aprilia, Silvy
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1766

Rice is one of the staple foods consumed by the people of Indonesia, including the Bangka Belitung Islands Province, more precisely in Bangka Regency, Riau Silip District, Banyu Asin Village. Newly harvested rice is usually not yet separated from the straw/panicle. The rice harvesting process still uses traditional tools or also called gebotan. One example is the rice threshing machine in Banyu Asin Village which has not been able to maximize the threshing results, which results in a long threshing process. The machine is only capable of threshing 30 kg/hour of rice that is put into the machine. Based on these needs, a rice threshing machine design was made to facilitate the threshing process. The design of the rice threshing machine refers to the design method, namely: planning, conceptualizing, designing, and finishing, then assessed based on technical and economic aspects. The designed machine uses a rotary system to thresh rice from its stalks, uses a combustion engine as a driving system, pulleys and belts as transmission elements, and the machine can be moved because it is lighter than existing machines. From the design results, this rice threshing machine has a minimum capacity of 80 kg/hour.

Investigasi Performa Variasi Sudut Impeller Blade Terhadap Gaya Dorong Waterjet Thruster Pristiansyah, Pristiansyah; Oktavianto, Mario; Subhan, Muhammad; Suzen, Zaldy Sirwansyah; Hasdiansah, Hasdiansah
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1767

Variations in ship propulsion are needed to assist in the water transportation purposes that will be used. Waterjet becomes one of the efforts for variations of the ship propulsion system on the waterjet occurs because the action of the thrust force that occurs causes the ship to move at a certain speed and the reaction of the fluid. The use of 3D Printing is starting to be developed and researched whether it is feasible to use in water transportation. 3D Printing technology or known as Additive layer manufacturing and the famous technology is Fused Deposition Modeling this technique is used to print products using filaments as material, the printed product has ideal geometry if it has a precise size and perfect shape. The testing process carried out at the Bangka Belitung state manufacturing polytechnic obtained the highest thrust results 30˚ angle with the number of blades 5 has the highest value with a thrust of 206 N and the lowest 45˚ 5 blade with 135 N thrust, the difference in angle affects the thrust generated.

Investigasi Performa Variasi Sudut Impeller Blade Terhadap Gaya Dorong Waterjet Thruster Pristiansyah, Pristiansyah; Oktavianto, Mario; Subhan, Muhammad; Suzen, Zaldy Sirwansyah; Hasdiansah, Hasdiansah
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1767

Variations in ship propulsion are needed to assist in the water transportation purposes that will be used. Waterjet becomes one of the efforts for variations of the ship propulsion system on the waterjet occurs because the action of the thrust force that occurs causes the ship to move at a certain speed and the reaction of the fluid. The use of 3D Printing is starting to be developed and researched whether it is feasible to use in water transportation. 3D Printing technology or known as Additive layer manufacturing and the famous technology is Fused Deposition Modeling this technique is used to print products using filaments as material, the printed product has ideal geometry if it has a precise size and perfect shape. The testing process carried out at the Bangka Belitung state manufacturing polytechnic obtained the highest thrust results 30˚ angle with the number of blades 5 has the highest value with a thrust of 206 N and the lowest 45˚ 5 blade with 135 N thrust, the difference in angle affects the thrust generated.

Investigasi Performa Variasi Sudut Impeller Blade Terhadap Gaya Dorong Waterjet Thruster Pristiansyah, Pristiansyah; Oktavianto, Mario; Subhan, Muhammad; Suzen, Zaldy Sirwansyah; Hasdiansah, Hasdiansah
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1767

Variations in ship propulsion are needed to assist in the water transportation purposes that will be used. Waterjet becomes one of the efforts for variations of the ship propulsion system on the waterjet occurs because the action of the thrust force that occurs causes the ship to move at a certain speed and the reaction of the fluid. The use of 3D Printing is starting to be developed and researched whether it is feasible to use in water transportation. 3D Printing technology or known as Additive layer manufacturing and the famous technology is Fused Deposition Modeling this technique is used to print products using filaments as material, the printed product has ideal geometry if it has a precise size and perfect shape. The testing process carried out at the Bangka Belitung state manufacturing polytechnic obtained the highest thrust results 30˚ angle with the number of blades 5 has the highest value with a thrust of 206 N and the lowest 45˚ 5 blade with 135 N thrust, the difference in angle affects the thrust generated.

PERBAIKAN SISTEM PENGULIRAN PADA MESIN BUBUT DoALL LT 13 DI BENGKEL MEKANIK POLMAN BABEL Yudha Pirmansyah, Sandika; Pratama , Jhasua; Ramli, Ramli; Pristiansyah, Pristiansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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

The automatic threading system (half‑nut lever) on the DoALL LT‑13 lathe at Polman Babel's mechanical workshop failed to operate, disabling thread-cutting capability. This research aimed to document the repair process and post-repair functionality tests. The methods included 5 Why analysis, apron disassembly, cleaning, gear-idler clearance adjustment, gear surface lapping, and re-calibration of the half‑nut lever. Tests included functional check, dimensional accuracy, and thread cutting on three specimens: M27×3, M20×2.5, and M18×2.5. Results showed normal operation and all threads met ISO tolerance. The lathe is now functional for educational and light machining purposes.

ANALISA KEBUTUHAN DAYA MOTOR BAKAR PADA MESIN PEMISAH TANGKAI PADI Haafizh Arrahman, Amar Ma’ruf; Permatasari, Intan; Omardo, Masria; Haritsah A, M.; Pristiansyah, Pristiansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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

The rapid advancement of technology demands innovations that can improve efficiency in terms of time, labor, and cost. Manual rice separation remains a challenge for farmers as it requires significant time and effort. A rice separator machine is an agricultural tool designed to mechanically separate rice from its stalks, replacing traditional methods such as beating (gebotan) or trampling. In Riau Silip District, Bangka Belitung, the total rice field area reached 190 hectares in 2024, with a rice production of approximately 75,644 tons. With such a harvest volume, the machines currently available in the village are unable to separate the rice from the stalks optimally due to insufficient engine power, which often causes jamming and reduced torque. Therefore, we propose replacing the engine with a 11 HP motor to increase torque and separation speed. As a result, the rice stalk separator machine will have a capacity of 20 kg/hour in accordance with the desired specifications, enabling farmers to overcome obstacles and maintain the stability of their harvest yields.

ANALISA KEBUTUHAN DAYA MOTOR BAKAR PADA MESIN PEMISAH TANGKAI PADI Haafizh Arrahman, Amar Ma’ruf; Permatasari, Intan; Omardo, Masria; Haritsah A, M.; Pristiansyah, Pristiansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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

The rapid advancement of technology demands innovations that can improve efficiency in terms of time, labor, and cost. Manual rice separation remains a challenge for farmers as it requires significant time and effort. A rice separator machine is an agricultural tool designed to mechanically separate rice from its stalks, replacing traditional methods such as beating (gebotan) or trampling. In Riau Silip District, Bangka Belitung, the total rice field area reached 190 hectares in 2024, with a rice production of approximately 75,644 tons. With such a harvest volume, the machines currently available in the village are unable to separate the rice from the stalks optimally due to insufficient engine power, which often causes jamming and reduced torque. Therefore, we propose replacing the engine with a 11 HP motor to increase torque and separation speed. As a result, the rice stalk separator machine will have a capacity of 20 kg/hour in accordance with the desired specifications, enabling farmers to overcome obstacles and maintain the stability of their harvest yields.

ANALISA KEBUTUHAN DAYA MOTOR LISTRIK PADA MESIN SARI NANAS Fatra, Fatra; Padilah, Rifky; Saputra, M. Aji; Haritsah Amrullah, Muhammad; Pristiansyah, Pristiansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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

The pineapple juice extractor machine is used for the process of pressing pineapples to produce juice while separating the pulp. The currently available machines generally use electric motors with a power of 0.35 HP. However, with that motor power, the existing machines are not able to press pineapples optimally, as the electric motor tends to lose power during operation. Therefore, this research focuses on calculating the appropriate motor power to be used in a pineapple juice extractor machine with a capacity of 5 kg/hour. The method applied involves calculating several parameters, including load, capacity, torque, and motor power. This is intended to ensure that the motor used is truly capable of accommodating the desired machine capacity. Based on the calculations performed, the most suitable electric motor for a pineapple juice extractor machine with a 5 kg/hour capacity is one witch a power rating of 0.5 HP.

PERBAIKAN SISTEM PENGEREMAN PADA MESIN BUBUT DoAll Lt 13 DI BENGKEL MEKANIK POLMAN BABEL Ferdian, Ferdian; Ariansyah, Ariansyah; Napitupulu, Robert; Pristiansyah, Pristiansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Repair the braking system on the DoAll Lt 13 no 4 lathe In completing the final project entitled Repair of the Cooling System and Braking System on the Doall Lt13 Lathe at the Bangka Belitung State Manufacturing Polytechnic, stages of adjustment are made to the flowchart diagram. Problem identification is a crucial stage because if the problem is not identified correctly, the solution applied may not be effective or may even worsen the situation, accurate and in-depth identification also helps ensure that the solution developed will be relevant and effective. In the data collection action there are several methods used to find out the problems and damage that occur in the DoAll LT 13 lathe. The methods used are the technician interview method, looking at the manual book, looking at the machine history book and conducting direct observation on the machine. The following is the initial data from several methods carried out Based on the results of the DoAll LT13 Lathe Brake System repair function test using a clutch motor braking system, the braking system was successfully repaired, and was able to work well and was able to brake. And for the repair of the cooling system on the DoAll Lt 13 no 4 lathe, it was also successfully repaired and obtained optimal results for all components that were repaired.

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