Suryani, Meilia Dwi (2019) Peningkatan Performansi Assembly Line Untuk Mereduksi Defect Voice Coil Touch Pada Perusahaan Speaker. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Permasalahan pada Perusahaan Speaker, khususnya pada Assembly Line 1 adalah terjadinya defect Voice Coil Touch (VCT) yang cukup besar. Defect VCT merupakan defect suara yang ditimbulkan karena pergerakan voice coil tidak sesuai spesifikasi. Selama sembilan bulan terakhir (Januari-September 2018), pada Assembly Line 1 terdapat sebesar 4736 defect VCT dan menyebabkan timbulnya rework cost sebesar Rp.74.986.667. Untuk mengurangi defect VCT tersebut, maka diperlukan suatu identifikasi untuk mengetahui akar penyebab defect VCT. Identifikasi akar penyebab dilakukan dengan Root Cause Analysis (RCA) menggunakan 5 why’s method. Selanjutnya dilakukan analisa Failure Mode and Effect Analysis (FMEA) dengan memberikan ranking penilaian tingkat keseriusan efek/dampak yang ditimbulkan, peluang terjadinya kegagalan dan kemampuan untuk mendeteksi kegagalan yang akan terjadi. Setelah itu, dilakukan perhitungan Risk Priority Number (RPN) untuk mengetahui tingkat resiko yang ditimbulkan dari terjadinya kegagalan. Nilai RPN tetinggi akan menjadi prioritas untuk melakukan suatu improvement. Berdasarkan analisa FMEA yang dilakukan, RPN tertinggi terdapat pada pemasangan voice coil yang longgar, pemasangan spider pada chassis tidak center, pengeleman magnet dan yoke dengan center yoke tidak rata, pengeleman magnet assy dan chassis assy tidak rata serta tipe center yoke salah. Adapun rekomendasi perbaikan yang diusulkan adalah melakukan upgrading sebanyak tiga kali dalam setahun, pengecekan komponen dan perlengkapan, dan menggunakan alat pencabut VCG.
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The problem in the Speaker Company, especially in Assembly Line 1 is the considerable of Voice Coil Touch (VCT) defect. VCT defect is a sound defect because the voice coil movement is not according to specifications. During the last nine months (January-September 2018), in Assembly Line 1 there were 4736 VCT defects and caused a rework cost Rp. 74.986.667. To reduce the VCT defect, it is required an identification to discover the root cause of VCT defects. The identification of root cause is terminated by Root Cause Analysis (RCA) using 5 why’s method. Subsequent, an analysis the Failure Mode and Effect Analysis (FMEA) conducted by giving a ranking of the seriousness level of impact, the chance of the failure and the ability to detect of the failure will occur. Then, the calculation of Risk Priority Number (RPN) conducted to discover the risk level of Failure defect. The highest of RPN value would be the priority to commit the improvement. Based on FMEA analysis, the highest RPN are installation of the loose voice coil, the installation of the spider on chassis not centered, the gluing between magnetic, yoke and center yoke is uneven, the gluing between chassis assy and magnetic assy is uneven, and also center yoke type is wrong. Several recommendations are upgrading in three times in a year, preparing the component and the equipment properly before the assembly process starts and third adding the tool to remove the Voice Coil Gauge (VCG).
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSI 658.56 Sur p-1 2019 |
| Uncontrolled Keywords: | Assembly Line, Failure Mode and Effect Analysis, Root Cause Analysis, Speaker, Voice Coil Touch |
| Subjects: | T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Industrial Technology > Industrial Engineering > 26201-(S1) Undergraduate Thesis |
| Depositing User: | Meilia Dwi Suryani |
| Date Deposited: | 02 Jun 2021 07:43 |
| Last Modified: | 06 Aug 2021 07:03 |
| URI: | http://repository.its.ac.id/id/eprint/60268 |
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