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All Journal Jurnal Rekayasa Mesin Jurnal Rekayasa Material, Manufaktur & Energi Matrix : Jurnal Manajemen Teknologi dan Informatika Logic : Jurnal Rancang Bangun dan Teknologi Logic : Jurnal Rancang Bangun Dan Teknologi
I Dewa Made Pancarana
Politeknik Negeri Bali
Aerospace Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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RANCANG BANGUN ALAT PEMBUAT DAN PENGASAH PAHAT BUBUT I Dewa Made Pancarana; I Made Aryana
Logic : Jurnal Rancang Bangun dan Teknologi Vol 15 No 1 (2015): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

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Abstract

Mesin gerinda pedestal merupakan salah satu alat untuk membuat dan mengasah pahat bubut. Prosespembuatan dan pengasahan pahat yang menggunakan mesin gerinda pedestal yang masih menggunakan tanganuntuk memegang benda kerja,dalam hal keselamatan kurang terjamin. Berdasarkan permasalahan tersebut, disinipenulis mencoba memberikan alternative untuk memudahkan pembuatan pahat bubut yaitu merancang “mesinpembuat dan pengasah pahat bubut” Diharapkan nantinya dapat mempermudah proses pembuatan pahat. Adapunhasil perancangan yang diperoleh yaitu: mesin pembuat dan pengasah pahat bubut menggunakan motor listrikdengan daya 1Hp dan putaran 1400 rpm. Diameter poros yang digunakan 32 mm dengan panjang 300 mmputaran pada batu gerinda sebesar 1400 rpm. Bantalan yang digunakan adalah bantalan gelinding. Puli yangdigunakan pada motor penggerak 76,2 mm, diameter puli yang digerakkan 76,2 mm, penerus daya menggunakansabuk V-belt A-45. Berdasarkan dari pengujian diperoleh bahwa mesin pembuat dan pengasah pahat bubut hasilmodifikasi dan tanpa mosifikasi memiliki perbedaan, dengan menggunakan mesin hasil modifikasi, keselamatankerja lebih terjamin, hasil lebih teliti, dan waktu pengerjaan lebih singkat, karena menggunakan ragum untukmemegang benda kerja. Sedangkan yang sekarang masih menggunakan tangan untuk memegang benda kerja.
RANCANG BANGUN MESIN PRESS BAGLOG JAMUR TIRAM DENGAN PENGGERAK MOTOR LISTRIK Achmad Wibolo; I Dewa Made Pancarana
Matrix : Jurnal Manajemen Teknologi dan Informatika Vol 4 No 3 (2014): MATRIX - Jurnal Manajemen Teknologi dan Informatika
Publisher : Unit Publikasi Ilmiah, P3M Politeknik Negeri Bali

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Abstract

Dewasa ini usaha jamur tiram merupakan budidaya jamur yang berkembang dan diminati oleh para petani jamur. Hal ini dikarenakan mudahnya mendapatkan bahan-bahan untuk membudidayakan jamur serta budidaya jamur memiliki prospek yang bagus. Proses mengepressan baglog masih secara konvensional, sehingga dibutuhkan tenaga manusia yang lebih ekstra, untuk memperoleh baglog yang lebih padat. Agar para petani jamur dapat bekerja secara lebih produktif, dibutuhkan mesin pengepress baglog jamur. Untuk itu peneliti merancang dan membuat mesin press baglog jamur dengan penggerak motor listrik. Prinsip kerjanya adalah mengubah gerak rotasi pada poros utama menjadi gerak translasi pada penumbuk. Spesifikasi mesin press baglog jamur yaitu menggunakan motor listrik 0,25 Hp, sabuk-V beserta puli dan rantai beserta spoket. Untuk mereduksi putaran digunakan gearbox dengan rasio 1:30. Dari hasil hasil uji coba mesin press baglog jamur diperoleh hasil pengepresan baglog jamur yang lebih padat dan waktu pengepresan yang lebih singkat dibandingkan dengan menggunakan alat yang konvensional.
Analysis of the Selection and Installation of a Pump for an Overflow Swimming Pool with a Volume of 67 Cubic Meters Achmad Wibolo; I Ketut Suherman; I Dewa Made Pancarana; I Ketut Adi
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 23 No. 2 (2023): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v23i2.138-146

Abstract

In the swimming pool there is a pump system that is useful for circulating water. Pumps  in  swimming pools can affect water quality. Dirty  water will be cleaned by the  filter  and  will  be re-circulated to the swimming pool. The calculations  that  must  be  known  are  the  volume  of  the swimming  pool,  pump  power, flow rate, and the curve of  the pump. In  order  for  the  selection of a swimming  pool pump  to be  appropriate, the  correct  calculation  must  be made  so that the pump  can provide  the best  performance for a swimming pool with a volume of 67 cubic meters  and is able to circulate swimming pool water 4 times  during 12 working hours.
Rancang bangun mesin planetary ball mill type vertikal skala laboratorium dengan variasi kecepatan putaran Pancarana, I Dewa Made; Waisnawa, I Gede Nyoman Suta; Firdaus, Muhammad Nabil
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.19704

Abstract

This paper discusses the design and manufacture of a laboratory-scale vertical planetary ball mill machine with variations in rotational speed. The purpose of making this planetary ball mill machine is to support the completeness of equipment in the laboratory at the Department of Mechanical Engineering, Bali State Polytechnic.This vertical type planetary ball mill machine has dimensions of 300 x 300 x 550 mm and two stainless steel stirring tubes with a capacity of 500 ml each. The engine frame is made of hollow galvanized iron measuring 3 x 3 cm. This vertical type planetary ball mill machine is driven by an AC 125 watt 220 volt 2800 rpm electric motor. The transmission system uses one straight gear (driving gear) and two straight gears (driven gear). The driving gear is mounted on the motor shaft, while the driven gear is attached to each stirrer tube. To adjust the amount of rotation, a 2000 W/220 V AC motor dimmer is used. Tests on the vertical planetary ball mill machine were carried out 8 times using 200 grams of wheat flour and 50 grams of water (4:1) for each experiment. Four times the experiments were carried out at rotational speeds of 250, 500, 750, and 1000 rpm for 5 minutes each and four times the experiments were carried out at rotational speeds of 250, 500, 750, and 1000 rpm for 10 minutes each. The test results show that a homogeneous mixture occurs faster with increasing rotations with a fixed time or lengthening the rotation time in each round.
Rancang bangun mesin CNC router 3 axis dengan penggerak ballscrew untuk kerajinan acrylic Pancarana, I Dewa Made; Putrawan, I Made Agus; Gunawan, I Made Rai
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.22135

Abstract

This research aims to design, manufacture and test a 3-axis CNC router machine with a ballscrew drive that can process acrylic into an artistic craft that has accurate, precise, neat and effective dimensions. In this research, a design was carried out to design a 3 axis CNC router machine with a ballscrew drive that suits the needs of medium and large scale industries. The working principle of a 3 axis CNC router machine with a ballscrew drive is to create a design using CAD or CAM software, then the design is converted to G-code (machine code), so that the machine can work according to G-code coordinates. The results of this research include design and construction which includes design designs, design calculations, manufacturing processes, and results of the accuracy of using acrylic materials. The results of the design and construction of a 3 axis CNC router machine with a ballscrew drive, namely a cutting work area of 800 mm x 600 mm x 100 mm, using a Breakout board controller as a controller, using a PC or laptop to find out the MDI movement of G-code coordinates. The cutting results of spindle rpm 6000, 8000, and 10,000 with varying feed rates will affect the roughness of the workpiece cutting results. The conclusion from varying the feed rate is: the greater the feed rate in units (mm/minute), the rougher the cutting results. , and vice versa, if the feed rate is smaller, the results of cutting the workpiece will be smoother.          
The Effect of Spot Welding Current on Shear Strength in St 40 Steel Plate Joints Pancarana, I Dewa Made; Suherman, I Ketut
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2025): Volume 20, Nomor 2, Agustus 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i2.6787

Abstract

Steel has several classifications, one of which is low carbon steel St 40. Low carbon steel plate St 40 is usually used for industry, machinery, shipping, household appliances and others. Although it is a low carbon steel and relatively easier to weld, St 40 steel still requires attention to the effects of heat. Excessive heating can change the microstructure of steel in the heat affected zone (HAZ), which has an impact on its mechanical properties. Controlling the electric current in the spot welding process greatly affects the characteristics of the welding results, such as the quality of the weld, tensile strength, hardness, area of ​​the HAZ, and the strength of external influences. This study aims to investigate the effect of electric current in the spot welding process on the shear strength of St 40 steel plate material. The method used is an experimental test, in which the spot welding process was carried out nine times on St 40 steel with three variations of input current (20.36A, 24.54A, and 28.95A) and a welding time of 8.0 seconds, using the shear test method according to the AWS D8.9M shear test standard.Based on the research results, it can be seen that the highest average shear strength is 6.72 MPa, which occurs at an input current of 28.95 A with an output current of 6011.47 A, a welding time of 8.0 seconds with a heat input of 88007.92 J and the lowest average shear strength is 1.67 MPa at an input current of 20.36 A with an output current of 6011.47 A, a welding time of 8.0 seconds with a heat input of 61894.30 J. This shows that increasing the electric current increases the shear strength value and vice versa.
Analysis of the Selection and Installation of a Pump for an Overflow Swimming Pool with a Volume of 67 Cubic Meters Achmad Wibolo; I Ketut Suherman; I Dewa Made Pancarana; I Ketut Adi
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 23 No. 2 (2023): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v23i2.138-146

Abstract

In the swimming pool there is a pump system that is useful for circulating water. Pumps  in  swimming pools can affect water quality. Dirty  water will be cleaned by the  filter  and  will  be re-circulated to the swimming pool. The calculations  that  must  be  known  are  the  volume  of  the swimming  pool,  pump  power, flow rate, and the curve of  the pump. In  order  for  the  selection of a swimming  pool pump  to be  appropriate, the  correct  calculation  must  be made  so that the pump  can provide  the best  performance for a swimming pool with a volume of 67 cubic meters  and is able to circulate swimming pool water 4 times  during 12 working hours.
Co-Authors Achmad Wibolo Firdaus, Muhammad Nabil Gunawan, I Made Rai I Gede Nyoman Suta Waisnawa I Ketut Adi I Ketut Suherman I Made Agus Putrawan, I Made Agus I Made Aryana Suherman, I Ketut