Push ,Pull& Kanban Production Systems

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 SystemRate

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

Thro

ughp

ut

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

Prof

it

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/