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All Journal Proceeding of the Electrical Engineering Computer Science and Informatics Mesin JTRM (Jurnal Teknologi dan Rekayasa Manufaktur)
Tri Prakosa
Fakultas Teknik Mesin Dan Dirgantara, Institut Teknologi Bandung
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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TINJAUAN SINGKAT TEKNOLOGI PEMBUATAN RODAGIGI HYPOID Prakosa, Tri
Mesin Vol 9, No 1&2 (1990)
Publisher : Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (341.689 KB)

Abstract

Rodagigi hypoid merupakan jenis roda gigi kerucut (bevel) yang sumbu pinionnya (driver) memiliki offset terhadap sumbu gearnya (drivennya). Teori yang rumit dan"informasi tentang pembuatannya yang hanya terpusat pada perusahaan tertentu, sehingga hanya pihak-pihak itulah yang mampu membuat roda gigi hypoid. Perkembangan teknologi mesin CNC serta kemajuan di bidang programming memberi dampak terhadap kemudahan teknologi pembuatan roda gigi hypoid, sehingga industri menengah bahkan rendahpun memiliki kesempatan untuk memproduksinya. Roda gigi hypoid banyak digunakan karena beberapa kelebihan dibandingkan dengan roda gigi kerucut lainnya. Unjuk kerja roda gigi tergantung pada kualitas geometri yang yang dihasilkan. Kualitas geometri yang baik dapat diperoleh apabila keseluruhan tahap proses pembuatan dikontrol secara baik. Tulisan ini menguraikan tentang proses pembuatan roda gigi hypoid yang dilakukan oleh The Gleason Works, Rochester, N.Y., USA, sebagai salah satu perusahaan penghasil mesin pembuat roda gigi. Negara lain penghasil mesin pembuat roda gigi adalah Swiss (Oerlikon), Jerman (Klingenberg), serta Jepang.
Design of Regenerative Damper for Energy Harvester in Playground Seesaw Reyhan Ramadhan; Muhammad Ul Haq; Estiyanti Ekawati; Tri Prakosa
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 7, No 1: EECSI 2020
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v7.2092

Abstract

Increasing demand for electricity, coupled with a greater understanding of the environmental impact of conventional power generation, has led to growing research interest on alternative energy sources. Energy harvesters based on playground equipment, such as the seesaw, has been proposed as an alternative method to generate electrical power. In this study, a new harvesting mechanism based on the electromagnetic regenerative damper is proposed as an alternative method to harness energy from a playground seesaw. The proposed design is intended for higher power output and efficiency, smaller dimensions, and ease of installation on a seesaw. Lab tests have been carried out to characterize the proposed design experimentally. The energy harvesting (stroke velocity-to-voltage) coefficient for the proposed seesaw-based energy harvester is obtained as 73.18 V/(ms -1 ). The regenerative damper is capable of producing up to 110 mW of power at 9.34% efficiency.
TINJAUAN SINGKAT TEKNOLOGI PEMBUATAN RODAGIGI HYPOID Tri Prakosa
Mesin Vol. 9 No. 1&2 (1990)
Publisher : Mesin

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

Abstract

Rodagigi hypoid merupakan jenis roda gigi kerucut (bevel) yang sumbu pinionnya (driver) memiliki offset terhadap sumbu gearnya (drivennya). Teori yang rumit dan"informasi tentang pembuatannya yang hanya terpusat pada perusahaan tertentu, sehingga hanya pihak-pihak itulah yang mampu membuat roda gigi hypoid. Perkembangan teknologi mesin CNC serta kemajuan di bidang programming memberi dampak terhadap kemudahan teknologi pembuatan roda gigi hypoid, sehingga industri menengah bahkan rendahpun memiliki kesempatan untuk memproduksinya. Roda gigi hypoid banyak digunakan karena beberapa kelebihan dibandingkan dengan roda gigi kerucut lainnya. Unjuk kerja roda gigi tergantung pada kualitas geometri yang yang dihasilkan. Kualitas geometri yang baik dapat diperoleh apabila keseluruhan tahap proses pembuatan dikontrol secara baik. Tulisan ini menguraikan tentang proses pembuatan roda gigi hypoid yang dilakukan oleh The Gleason Works, Rochester, N.Y., USA, sebagai salah satu perusahaan penghasil mesin pembuat roda gigi. Negara lain penghasil mesin pembuat roda gigi adalah Swiss (Oerlikon), Jerman (Klingenberg), serta Jepang.
Perencanaan Set-Up Proses Pemesinan Rahang Tetap dan Gerak Ragum-125 Politeknik Manufaktur Bandung: Indonesia M Yazid Diratama; Tri Prakosa; Gamawan Ananto; Agus Riadi
JTRM (Jurnal Teknologi dan Rekayasa Manufaktur) Vol 6 No 2 (2024): Volume: 6 | Nomor: 2 | Oktober 2024
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Manufaktur Bandung (Polman Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.48182/jtrm.v6i2.171

Abstract

Ragum-125 Polman, is one among other different products produced by Polman Bandung which functions as a clamping device. The Ragum-125 Polman is assembled from several components where the fixed jaw and moving jaw are its main components. For the time being, the production process of the Ragum-125 Polman, especially the fixed and moving jaws, still uses many conventional machines tools and requires many jigs (locating devices) and fixtures (fixing devices). Consequently, the processing time is long. The production process requires fourteen (14) set-ups and many stages of the process from one machine to other machines, which is prone to process errors. CNC machine tools can do many machining operations in a single set-up and can minimize process errors because their movements are numerically controlled. However, to take advantage of CNC machine tools, good set-up planning is needed so that the process can be conducted according to the specifications. This research discusses the planning set-up and choosing the machine tools for machining the fixed and moving jaw of Ragum-125 Polman. It consists of four stages they are, grouping the feature according to the tool approach direction (TAD), selection the set-up datum, set-up formation, and determination the machine tools and sorting the machining operation in every set-up. The result from this research produced 19 rules for guidance the set-up planning processes and yield 2 set-ups for fix jaw and 1 set-up for moving jaw with Mitsubishi CNC Horizontal Milling Machine H4Bn and the drilling machine lodiflex Caser F40 C5 as the machine tools which reduce the number of set-ups from 14 set-up to 3 set-up in machining processes of fix jaws and moving jaws of Ragum-125 Polman.
Co-Authors Agus Riadi Ekawati, Estiyanti Estiyanti Ekawati Gamawan Ananto Haq, Muhammad Ul M Yazid Diratama Muhammad Ul Haq Ramadhan, Reyhan Reyhan Ramadhan