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All Journal Majalah Ilmiah MOMENTUM JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY
Asep Dharmanto
Universitas Muhammadiyah Cileungsi, Indonesia
Education Energy Industrial & Manufacturing Engineering Mechanical Engineering

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Design and Construction of Plastic Chair Armrest Cover Piercing Dies at PT. XYZ Wilarso; Asep Dharmanto; Giardyan Komara; Asep Saepudin; Mujiarto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 10 No. 1 (2026): June 2026 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v10i1.17412

Abstract

The armrest cover on the chair is produced using the vacuum forming method and so far the line cutting and hole making process is done manually using a hand grinder, thus potentially causing quality inconsistencies and low productivity. The armrest cover made of ABS plastic has a hole dimension of 37 mm × 22 mm, a thickness of 3 mm, and a circumference of 119.27 mm, with a shear strength value of 67 MPa based on Proto XYZ data. Calculations show that the minimum force required for the punching process is 8.46 tons. This study aims to design and manufacture piercing dies for the armrest cover punching process to obtain precise cutting results and increase production output. The dies were made using a CNC milling machine with the help of Autodesk Fusion 360 software, then the dies were tested using a 15-ton capacity press machine. The test results showed that the resulting holes met the specified dimensional standards. The implementation of these piercing dies significantly increased production capacity, from 90 sets per shift in the manual process to 1,920 sets per shift using piercing dies. Thus, the use of piercing dies has proven effective in increasing the precision and efficiency of the plastic armrest cover manufacturing process.
Analisis Overall Equipment Effectiveness dalam Penerapan Total Productive Maintenance Pada Mesin Flow Mixer di PT ASI Wilarso; Bayu Hamengku Rizkiansyah; Asep Dharmanto; Asep Saepudin; Mujiarto
JURNAL ILMIAH MOMENTUM Vol 22 No 1 (2026): April
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v22i1.15469

Abstract

Improving machine productivity and effectiveness is a crucial factor in maintaining the competitiveness of manufacturing companies. One approach to improving equipment performance is Total Productive Maintenance (TPM), with Overall Equipment Effectiveness (OEE) as the primary indicator. This study aims to analyze the effectiveness of the Flow Mixer machine at PT ASI's Mold Shop Department based on its OEE value, which comprises availability, performance, and quality. It also identifies the dominant factors causing low machine effectiveness using the Six Big Losses approach and a fishbone diagram. The research data were obtained from production data, planned and unplanned downtime, the number of defective products, and machine operating time during September–November 2025. The calculation results show that the Flow Mixer machine's OEE values ​​were 66% (September), 68% (October), and 68% (November), respectively, which are still below the world-class OEE standard of 85%. The main factors influencing the low OEE are breakdowns and process defect loss. Improvement proposals are based on the eight pillars of TPM, which focus on improving machine maintenance, operator skills, and standardizing work procedures. Implementation of the proposed improvements in December resulted in an increase in the OEE value to 72%. The results of this study demonstrate that consistent TPM implementation can improve the effectiveness of the Flow Mixer machine and the productivity of the production process.
Rancang Bangun Dies Pierching untuk Proses Pelubangan Cover Armrest Plastik Kursi di PT. XYZ Giardyan Komara; Asep Dharmanto; Wilarso; Hilman Sholih; Asep Saepudin; Dan Mugisidi
JURNAL ILMIAH MOMENTUM Vol 22 No 1 (2026): April
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/jim.v22i1.15471

Abstract

Proses pelubangan pada cover amrest plastik di PT. XYZ saat ini masih dilakukan secara manual menggunakan gerinda tangan sehingga berpotensi menimbulkan ketidakkonsistenan kualitas serta rendahnya produktivitas. Penelitian ini bertujuan merancang dan membuat dies plecing untuk meningkatkan presisi dan efisiensi proses pelubangan. Material cover armrest menggunakan plastik ABS dengan ketebalan 3 mm dan nilai shear strength sebesar 67 MPa. Perancangan dies dilakukan menggunakan perangkat lunak Autodesk Fusion 360, kemudian diproduksi menggunakan mesin CNC milling dan diuji mesin press berkapasitas 15 Ton. Hasil perhitungan menunjukkan kebutuhan gaya pelubangan sebesar 8,46 tonf untuk dua lubang. Pengujian menunjukkan bahwa dies piercing mampu menghasilkan lubang sesuai spesifikasi dimensi dan meningkatkan kapasitas produksi secara signifikan dari 90 set per shift pada proses manual menjadi 1.920 set per shift. Hasil penelitian menunjukkan bahwa penerapan dies piercing efektif meningkatkan presisi proses serta efisiensi produksi pada komponen cover armnest plastik.
Co-Authors Bayu Hamengku Rizkiansyah Dan Mugisidi Giardyan Komara Hilman Sholih Mujiarto Mujiarto Saepudin, Asep Wilarso