77
BAB 6
KESIMPULAN DAN SARAN
6.1.
Kesimpulan
Kesimpulan yang dapat diambil pada Tugas Akhir ini adalah :
a. Total waktu proses produksi dari semula 60 hari dengan urutan pengerjaan
yang diusulkan menjadi 40 hari.
b. Metode SPT
(Shortest Processing Time)
mempunyai waktu total lebih cepat
dibanding metode LPT
(Longest Processing Time).
Pada saat proses
penjadwalan metode LPT terdapat pengecualian yaitu, proses pengerjaan
yang seharusnya dilakukan pada hari sekarang namun karena waktu yang
tidak cukup dikerjakan dihari berikutnya sehingga penjadwalan pada metode
LPT dihasilkan waktu yang lebih lama.
c. Pada Tabel 6.1. dapat dilihat BOM
(Bill Of Material)
, Waktu
machining
, dan
urutan pengerjaan yang digunakan sebagai acuan dalam proses produksi.
6.2.
Saran
[image:1.595.87.514.200.765.2]78
Tabel 6. 1. BOM, Waktu Machining, Urutan Pengerjaan
C u tt in g T u rn in g H a n d G ri n d in g H a n d D ri ll in g W e ld in g D ri ll in g
1 120 3 120
1 Frame assy 120 wait 3 120
1 frame cor 2 p . . cor 0
2 bearing with housing A 4 p . . . . part standart
3 bearing with housing A kecil 2 p . . . . part standart
4 bearing with housing B 2 p . . . . part standart
5 induction motor 1 p . . . . electical
6 puley karet - B54 3 p . . . . part standart
7 puley pasangan motor 12 " 2 p . . . part standart
8 puley pasangan as penggerak 5" 2 p . . . part standart
9 arm lengan panjang 1 p . . . cor
1 bearing diameter 20 3 p part standart
10 arm lengan pendek 5 p . . . cor
1 bearing dia 20 3 p part standart
11 balancer 2 p . . . cor
1 bush balancer 2 b 10 60 . . . 70 40 2
12 c arm 2 p . . . cor
13 extention universal 8 p . . . part standart
14 shaft 1,5 inch 2 b 20 20 120 . . . . 20 . 180 90 1
15 shaft 1 inch 2 b 20 20 100 . . . . 20 . 160 89 3
16 roda gila (assembly) 2 b . . . 60 . . . assembling 1 60 46 2
1 eksentris 10 . 40 30 assembling 1 80 3 1
1 bush eksentris 2 b 10 60 . 70 1 1
2 blok o 2 b 10 60 40 . 110 2 1
2 bearing diameter 150 2 p . . . part standart 0
3 housing 2 b 10 100 . . . 110 45 2
4 bush roda gila 2 b 10 20 60 . . . 90 44 2
17 baut roda gila panjang 1 b 20 . 40 . . 10 . 70 80 3
18 baut roda gila pendek 1 b 20 . 40 . . 10 . 70 81 3
19 plat extention las 4 b 20 40 . 60 . 30 . . 150 88 1
20 L untuk motor 2 b 20 . . 60 . . 30 10 . 120 86 2
21 plat dudukan motor 2 b 20 . . 60 30 . . 20 . 130 87 1
22 as sensor 1 b 20 . . 60 . . . 80 82 3
23 L dudukan sensor 2 b 10 . . 60 . . 30 20 . 120 85 1
24 as baut for potong 1 b 10 . . 60 . . . 20 . 90 83 3
25 plat servo motor 1 b 10 . 40 60 . . . . 110 84 2
26 L frame 2 b . . . 80 20 assembling 2 100 7 1,2
1 samping panjang 4 b 10 . . 40 . . . . 50 4 2
2 samping pendek 4 b 10 . . 40 . . . . 50 5 2
3 tengah 2 b 10 . . 40 . . . . 50 6 2
2 Penarik assy 60 wait 2
1 karet diameter 60 2 p . . . part standar
2 peer untuk roll p . . . part standar
3 induction motor 1 p . . . electric
4 belt puley 1 p . . . part standar
5 pasangan puley 1 p . . . part standar
6 magnetik 1 p . . . part standar
7 peer adjuster p . . . part standar
8 penyangga roll karet 2 p . . . cor
9 arm panjang 2 p . . . cor
10 arm pendek 2 p . . . cor
11 blok tail 2 p cor
12 karet potongan 5 p . . . part standar
13 as diameter 20,6 mm 2 b 20 20 80 . . . . 10 . 130 64 2
14 as diameter 13 mm 3 b 20 20 120 . . . . 30 . 190 66 1
15 as diameter 1 inch 2 b 20 20 90 . . . . 10 . 140 65 1
16 L for peer 2 b 20 . 40 . . . 20 . 80 63 2
17 pengait megnet 2 b 20 . . 60 . . . 80 62 1
Catatan but uh ope rato r total waktu Urutan pengerj aan SPT dikerja kan pada operat or -P e ra k it a n ( m e n it ) U n it S u b U n it 1 S u b U n it 2 S u b U n it 3 S u b U n it 4 Nama komponen ju m la h p e sa n ( p ) / b u a t (b ) p e rs ia p a n m a te ri a l (m e n it )
Waktu proses (machining) (menit)
79
Tabel 6. 2. Lanjutan
C u tt in g T u rn in g H a n d G ri n d in g H a n d D ri ll in g W e ld in g D ri ll in g Catatan but uh ope rato r total waktu Urutan pengerj aan SPT dikerja kan pada operat or -P e ra k it a n ( m e n it ) U n it S u b U n it 1 S u b U n it 2 S u b U n it 3 S u b U n it 4 Nama komponen ju m la h p e sa n ( p ) / b u a t (b ) p e rs ia p a n m a te ri a l (m e n it )
Waktu proses (machining) (menit)
W a k tu P e n g e ca ta n (m e n it )
3 Stand Stainless 30 30 assembling 2 60 34 1,2
1 stainles sheet b 10 . . 60 . . . . 70 33 2
2 L aluminium depan 1 b 10 . . 10 . . . 20 26 2
3 L aluminium samping 2 b 10 10 . . . 20 27 2
4 L aluminium belakang 1 b 10 10 . . . 20 28 2
5 L aluminium kecil 2 b 10 20 . . . 30 29 2
6 L aluminium kecil 2 2 b 10 20 . . . 30 30 2
7 penguat 4 b 10 20 . . . 30 31 2
8 selongsong 4 b 10 20 . . . 30 32 2
4 Las Assy 50 wait 2 50
1 pemanas 60 assembling 2 60 50 1,2
1 lempengan 4 p . part standart
2 kuningan 1 b 20 . . . 90 . . . 110 47 1
3 shaft for kuningan 1 b 20 20 90 . . . . 20 150 49 1
4 plat penutup 2 b 20 . . 90 . . . . 110 48 1
2 blok atas 1 p . . . cor
3 block bawah 1 p . . . cor
4 lembaran nilon 1 p 20 . . 30 . . . 50 67 2
5 L aluminium 2 b 20 . . 50 . . . 70 68 2
6 stand pemegang 2 p . . . cor
7 peer 2 p . . . part standart
8 pengunci 2 p . . . part standart
9 shaft vetical 2 b 20 30 60 . . . . 20 . 130 71 3
10 bolt vertical 2 b 20 20 50 . . . . 20 . 110 69 3
11 bush pengunci 2 b 20 30 40 . . . . 20 . 110 70 3
12 bush kuningan 2 b 20 30 90 . . . . 20 . 160 72 3
5 Roll 30 wait 2 30
1 Roller 1 b 60 assembling 1 60 43 1
1 pipa 1 inch 1 b 20 . . 60 . . . 80 41 1
2 bearing diameter 20 2 p . . . part standart
3 bolt shaft 2 b 20 . . 60 . . . 80 42 1
2 L stand 2 p . . . cor
6 Roll Pengatur 90 assembling 2 0 79 1,2
1 as diameter 1 inch 1 b 20 20 90 . . . 130 76 2
2 karet potongan 5 b 10 . . 60 . . . 70 73 2
3 as diameter 12,5 4 b 20 20 150 . . . 190 78 2
4 as diameter 12,5 atas 1 b 20 . 60 20 . . . 100 75 2
5 shaft bolt m10 2 b 10 . . 60 . . . 10 . 80 74 2
6 block bawah 2 p . . . pesan
7 block tengah 2 p . . . pesan
8 penopang u atas 1 b 30 20 . 90 . . 30 . 170 77 2
9 handle 1 p . . . part standart
10 pasangan rack gear 90 derajat 2 p . . . part standart
7 Pemotong Assy 75 wait 3
1 Karet dia 60 2 p 10 . 55 . . . . 15 part standart
1 bearing diameter 30 4 p . . . part standart
2 as diameter 20 2 b 20 20 120 . . . 160 61 1
3 peer karet p . . . part standart
4 servo motor 1 p . . . electical
5 puley pasangan 1 p . . . part standart
6 timing belt 1 p . . . part standart
7 blok bawah 1 p . . . . cor
8 stand 2 p . . . . cor
9 bearing diameter 45 2 p . . . part standart
10 peer besar p . . . part standart
11 baut pengatur 4 b 20 . . 60 . . . 20 . 100 58 3
12 housing lifter 2 p . . . pesan
13 lifter 2 b 20 30 . 60 . . 30 20 . 160 60 3
14 pisau 2 p . . . part standart
15 dudukan pisau 2 b 20 40 . . . . 60 20 . 140 59 3
16 magnetik 1 p . . . part standart
17 plat magnetik 2 b 20 . . 40 . . . . 60 57 3
80
Tabel 6. 3. Lanjutan
C u tt in g T u rn in g H a n d G ri n d in g H a n d D ri ll in g W e ld in g D ri ll in g Catatan but uh ope rato r total waktu Urutan pengerj aan SPT dikerja kan pada operat or -P e ra k it a n ( m e n it ) U n it S u b U n it 1 S u b U n it 2 S u b U n it 3 S u b U n it 4 Nama komponen ju m la h p e sa n ( p ) / b u a t (b ) p e rs ia p a n m a te ri a l (m e n it )
Waktu proses (machining) (menit)
W a k tu P e n g e ca ta n (m e n it )
2 input unit 1 . 60 . . . 90 assembling 2 150 92
1 frame input 1 . . 120 . 30 assembling 2 150 25 1,3
1 base A 2 b 10 . . 30 . 40 20 1
2 Base B 3 b 10 . . 50 . 60 24 1
3 tengah 2 b 10 . . 30 . 40 21 1
4 stang tegak 2 b 10 . . 30 . 40 22 1
5 stang miring 2 b 10 . . 40 . 50 23 1
2 bearing with housing 4 p part standart
3 shaft input 2 b 10 20 120 . . . 150 91 2
3 output unit 180 assembling 3 180 95 1,2,3
1 frame output . . . 20 40 . . . assembling 3 60 15 1,2,3
1 frame assy . 90 . 40 assembling 2 130 13 1,3
1 c tegak A 2 b 10 20 . 20 . . . 50 8 3
2 c tegak B 2 b 10 20 . 20 . . . 50 9 3
3 c atas 2 b 10 20 . 20 . . . 50 10 3
4 c panjang 2 b 10 20 . 20 . . . 50 11 3
5 c pendek 4 b 10 20 . 30 . . . 60 12 3
2 baut adjuster 4 b 10 . . 30 . . . 40 14 3
2 L for motor 2 b 10 20 . 60 . . . 90 93 3
3 blok adjuster 2 . . . 60 20 . assembling 2 80 53 2,3
1 blok adjust 2 b 10 . . . 60 . . . 70 51 2
2 bearing diameter 20 2 p . . . part standart
3 seegering for hole 2 p . . . part standart
4 baut M6 modif . . . . .. . . part standart . . .
5 baut M8 2 p 10 . . 50 . . . 60 52 2
4 blok fixed 2 . . . 60 30 . assembling 2 90 56 1,2
1 blok fix 2 b 10 . . . 60 . 70 54 3
2 bearing diameter 20 2 p . . . part standart
3 seegering for hole 2 p . . . part standart
4 baut M6 modif 8 b 10 . . 60 . . . 70 55 2
5 shaft diameter 40 2 b 10 20 120 . . . 150 94 3
6 karpet p . . . part standart
7 stand assy . 60 assembling 1 60 19 2
1 blok stand 4 b 10 . . 50 . . 20 . . . 80 18 2
2 shaft stand 2 b 10 . . 40 . . . 50 17 2
3 baut stand 4 b 10 30 . . . 40 16 2
8 mover assy . 60 assembling 1 60 39 3
1 bush mover 2 b 20 40 40 . . . . 100 38 3
2 stand mover 4 b 20 50 . . . 70 37 3
3 dudukan mover 2 b 10 50 . . . 60 36 3
4 plat mover 1 b 10 50 . . . 60 35 3
5 Bolt M4 4 p . . . part standart . . .
6 Key M4 2 p . . . part standart . . .
9 plat penopang 1 p . . . part standart . . . .
4 elektrical
1 servo driver 1 p electical
2 drive inverter 2 p electical
3 sensor proximity switct 2 p electical
4 sensor photosensor 1 p electical
5 thermocouple 1 p electical
6 trafo 1 p electical
7 kontrol 1 p electical
8 ampere meter 1 p electical
9 volt meter 1 p electical
10 tombol reset 1 p electical
11 push botton merah 1 p electical
12 push bottonhijau 1 p electical
13 lampu merah 1 p electical
81
DAFTAR PUSTAKA
Alpriesta (2013). Metode
Lot Splitting
dan
Earliest Dua Date
(EDD) dalam
pembuatan prosedur penjadwalan guna meminimasi keterlambatan
pada PT Bejana Mas Perkasa, Nanggulan- Kulon Progo, Yogyakarta
(Skripsi). Fakultas Teknologi Industri, Universitas Atma Jaya
Yogyakarta, Yogyakarta.
Baker, K.R, (1974).
Introduction to Sequenching and Scheduling
, John wiley &
Son, New York.
Baker, Kennenth R., Trietsch. (2009).
Principles of Sequencing and Scheduling.
America : John Wiley & Sons, Inc.
Bedworth, David D., Bailey, James E. (1987
). Integrated Production Control
Systems
. Singapore: John Wiley and Sons Inc.
Bedworth, David D. & Cao, Jing. (2002).
Flow Shop Scheduling in Serial
MultiProduct Processes With Transfer and set-up Times
. USA:
Department of Industrial Engineering, Arizona State University.
Conway, Richard W., Maxwell, William L., Miller, Louis W. (2001).
Theory of
Scheduling.
America : Addison-Wesley Publishing Company
.
Educooling.
(2015).
BOM
(Bill
Of
Material).
27
Mei
2016.
educooling.com/2016/01/12/bill-of-material-bom/
Fauzie (2011). Penjadwalan Proses Persiapan Tenun di Departemen Weaving PT
Kusumahadi Santosa Surakarta (Skripsi). Fakultas Teknologi Industri,
Universitas Atma Jaya Yogyakarta, Yogyakarta.
Ginting, R. (2009). Penjadwalan Mesin. Grahailmu: Jogjakarta.
Hery, (2015). Gambar Teknik Kupas Tuntas Dasar Pengertian dan Fungsinya, 27
Mei 2016,
www.ilmucad.com/2015/12/gambar-teknik-pengertian-dan-fungsinya.html
Kamnisky, P., dan Kaya, O. (2008).
Scheduling and Due-date Quotation in a
Make-to-Order Supply Chain
. Naval Research Logistic 55, 444-458.
Morton, Thomas E., Pentico, David W. (2001).
Heuristic Scheduling Systems.
82
Nahmias, S. ,(1997).
Production and Operation Analysis
. New York, McGraw-Hill.
Pinedo, M & Chao, (1999).
“Operation Scheduling with Applications in
Manufacturing and Services”, McGraw-Hill, New York.
Rudyanto dan Arifin (2010). Penerapan Metode Earliest Due Date pada
Penjadwalan Produksi Paving pada CV. Eko Joyo (Jurnal). Jurusan
Sistem Informasi, Sekolah Tinggi Managemen Informatika dan Teknik
Komputer Surabaya.
Sandianto (2014). Analisis Penjadwalan Produksi di Bengkel Knapot AMAN
Purbalingga (Skripsi). Fakultas Teknologi Industri, Universitas Atma
Jaya Yogyakarta, Yogyakarta.
77
0
11
30
Drawn by
:
Robertus David P.
Reg. Nr.
:
141608109
Date
:
19-05-2016
Checked by :
Scale :
1:10
Unit :
mm
Material :
Sign :
Operation
Dwg. Nr.
SN. NS.
Rep. by.
Rep.
Origin.
Output Unit
A3
1200
Drawn by
: Robertus David P.
Reg. Nr.
: 141608109
Date
: 19-05-2016
Checked by :
Scale : 1:10
Unit : mm
Material :
Sign :
Operation
Dwg. Nr.
SN. NS.
Rep. by.
Rep.
Origin.
Input Unit
A4
Pieces
Description
Item
Material
Dimension
Remarks
Frame Input
Bearing with Housing
Shaft Input
Hollow 50x50x2,3
Purchased
-850
40
0
58
Drawn by
:
Robertus David P.
Reg. Nr.
:
141608109
Date
:
19-05-2016
Checked by :
Scale :
1:20
Unit :
mm
Material :
Sign :
Operation
Dwg. Nr.
SN. NS.
Rep. by.
Rep.
Origin.
Proses Unit
A3
Pieces
Description
Item
Material
Dimension
Remarks
20
75
1212
15
Drawn by
:
Robertus David P.
Reg. Nr.
:
141608109
Date
:
19-05-2016
Checked by :
Scale :
1:20
Unit :
mm
Material :
Sign :
Operation
Dwg. Nr.
SN. NS.
Rep. by.
Rep.
Origin.
Mesin Las Potong Plastik
A3
Pieces
Description
Item
Material
Dimension
Remarks
12
10
3200
15
