6 - Manufacturing Resource Planning

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6 - Manufacturing Resource Planning




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Presentations text content in 6 - Manufacturing Resource Planning

Slide1

6 - Manufacturing Resource Planning

Dr. Ron

Lembke

pp.

182-208

Slide2

How do we account for LT?

System for organizing WIP releases

Consider LT for each item

Look at BOM to see what parts needed

Release so they will arrive just as needed

Example Figure

6.2

Order quantity is 50 units

LT is one week

I’ve added “Net requirements” and “scheduled releases” rows to Figure for clarity

Slide3

Fig 6.2

6 units short

Slide4

Fig 6.2

Order 50 units week earlier

Slide5

Fig 6.2

Ending inventory

Slide6

Terminology

Projected Available balance

Not on-hand (that may be greater)

Tells how many will be available (in ATP sense)

Planned order releases

≠ scheduled receipts

Only when material has been committed to their production

Move to scheduled receipts as late as possible

Preserves flexibility

Slide7

Figure 7.3 1605 Snow Shovel

1605 Snow Shovel

048

Scoop-shaft

connector

13122

Top Handle

Assy

314 scoop assembly

118 Shaft (wood)

062 Nail (4)

14127

Rivet (4)

Slide8

314 scoop assembly

314 scoop assembly

14127 Rivet (6)

019 Blade (steel)

2142 Scoop (aluminum)

Slide9

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

Slide10

BOM Explosion

Process of translating net requirements into components part requirements

Take into account existing inventories

Consider also scheduled receipts

Slide11

BOM Explosion Example

Need to make 100 shovels

We are responsible for handle assemblies.

Slide12

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

Slide13

Net Requirements

Sch Gross NetPart Description Inv Rec Req ReqTop handle assy 25 -- 100 75 Top handle 22 25 Nail (2 required) 4 50 Bracket Assy 27 -- Top bracket 15 -- Top coupling 39 15

Slide14

Figure 6.5

Sch Gross NetPart Description Inv Rec Req ReqTop handle assy 25 -- 100 75 Top handle 22 25 75 28 Nail (2 required) 4 50 150 96 Bracket Assy 27 -- 75 48 Top bracket 15 -- Top coupling 39 15

Slide15

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

Slide16

Figure 6.5

Sch Gross NetPart Description Inv Rec Req ReqTop handle assy 25 -- 100 75 Top handle 22 25 75 28 Nail (2 required) 4 50 150 96 Bracket Assy 27 -- 75 48 Top bracket 15 -- 48 33 Top coupling 39 15 48 --

Slide17

Timing of Production

This tells us how many of each we need

Doesn’t tell when to start

Start as soon as possible?

Dependent events (oh no, not that

!)

(We ignore statistical fluctuations)

Front schedule Cutting approach (Fig. 7.6

) p. 231

Back schedule Fig.

7.7 p.232

Slide18

Fig 6.8 – 13122 Top Handle Assy

p. 233

Slide19

Fig 6.8 – 13122 Top Handle Assy -2

Slide20

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

X

Slide21

457 Top Handle

One handle for

Each assembly

Slide22

457 Top Handle

Slide23

457 Top Handle

Slide24

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

X

Slide25

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

X

X

Slide26

082 Nail (2 required)

Two

nails for

Each assembly

Slide27

082 Nail (2 required)

Slide28

082 Nail (2 required)

Slide29

082 Nail (2 required)

Slide30

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

X

X

X

Slide31

11495 Bracket Assembly

One

bracket for

Each assembly

Slide32

11495 Bracket Assembly

One

bracket for

Each assembly

Slide33

11495 Bracket Assembly

One

bracket for

Each assembly

Slide34

11495 Bracket Assembly

Slide35

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

X

X

X

X

Slide36

129 Top Bracket

Slide37

129 Top handle bracket

Slide38

13122 Top Handle Assembly

1118Top handleCoupling (steel)

11495 Welded

Top handle bracket

Assembly

13122 Top Handle Assembly

457 Top handle

(wood)

129 Top Handle

Bracket (steel)

082 Nail (2)

X

X

X

X

X

Slide39

1118 Top handle coupling

Slide40

1118 Top handle coupling

Slide41

1118 Top handle coupling

Slide42

Other considerations

Safety stock if uncertainty in demand or supply quantity

Don’t let available go down to 0

Safety LT if uncertainty in arrival time of supply

Place order earlier than necessary

Order quantities

EOQ, Lot-For-Lot, Periodic Order quantity, more to come in ch. 14

Slide43

Homework

DQ: 3, 7

Problems: 3,5,6,7


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