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Push ,Pull& Kanban Production Systems
Klasifikasi pengendalian sistem produksi
MRP 1
Push system MRP II
ERP
Pull system
Conwip model
Kanban system
JIT SYSTEM
Diagram konsep push system
Karakteristik push systemDue date
driven
Release order
wip
Sistem order produksi jenis dorong(push)
Filosofi push system
Start date
Production system
Due date
Lead time
Start Date = Due Date – Lead Time
Urutan operasi
Aliran fisik aliran informasi
Teknologi push vs market pull
Push sytem- MRP
Push system – MRP IIDemand forecast
MRP
Demand forecast
MPS
Agregate planing
CRPJob pool
Job release
Job dispatcingRouting data
Inventory status
BOM
RCP
Diagram konsep pull system
Karakteristik Pull System
Rate driven LEVEL
WIP
throughput
Urutan operasi
Upstream downstream
Pull system – JIT (Just In Time)
filosofi
produk
elemen
Building bock
operasiproses
Just in time scheduled
Finished good inventory
Proporsi waste and value added
JIT-Layoutjust in time in job shop
Pull system - CONWIP
20
CONWIP Controller
PC
PN Quant–— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— ––––––— –––––
Work Backlog
. . .
Workstations
PC
21
Push and Pull Schematics
StockPoint . . .
Pure Push (MRP)
. . .
. . .
Pure Pull (Kanban)
CONWIP
…
Full ContainersAuthorization Signals
StockPoint
StockPoint
StockPoint
StockPoint
StockPoint
22
Using MVA to Evaluate Line Performance
0
0.1
0.2
0.3
0.4
0.5
0.6
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32
WIP
Thr
ough
put
Best case
Worst case
Practical worst case (ce(j) = 1)
Reduced variability (ce(j) = 0.5)
23
CONWIP vs. Pure Push Comparisons
-20
-10
0
10
20
30
40
50
60
70
0% 20% 40% 60% 80% 100% 120% 140%
Control as percent of optimal
Pro
fit
Push
CONWIPOptimum
Efficiency
Robustness
Pull system-Kanban
Skematik Kanban
Diagram Alir Kanban
Kanban Board For Service Team
Kanban + Scrum Board For Services Team
Jenis kanban
• Kanban pengambilan
• Kanban perintah produksi
• Kanban Penanda
Urutan Berbagai Jenis Kanban
Langkah-Langkah Menggunakan Kanban
Sistem Kanban Pada Supermarket
Interface push pull
Perbandingan sistem dorong dan tarik
Referensi
• http://en.wikipedia.org/wiki/Kanban• http://blog.brodzinski.com/2011/09/pull-push-kanban.html• http://en.wikipedia.org/wiki/Push%E2%80%93pull• http://
www.automationmag.com/images/stories/LWTech-files/73%20Pull%20Kanban.pdf
• http://pushpull.bg/
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