บทที่ 6 การจัดซื้อและการไหลของวัสดุ
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บทที่ 6 การจัดซื้อและการไหลของวัสดุ
Citation preview
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Logistics Management and Supply Chain
. BSRU 0868332185
[email protected] 089-490-5234
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Purchasing
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( Purchasing )
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: ,
-
: ,
2-3
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: ,
1.
2. 3.
4.
5.
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1. ( Right Quality )
- - -
2. ( Right Quantity )
- - -
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3. ( Right Source of Supply ) - - -
4. ( Right Price ) - - ( Demand and Suppy )-
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5. ( Right Time) - - -
6. ( Right Place )
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(Product Life Cycle)
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(Product Life Cycle)
(Introduction)
(Growth)
(Maturity)
(Saturation)
(Decline)
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1. (Historical Sales Data)
2. (Basic Stock List)
3. (Customer Requests)
4. (Customer Complain)
5. (Comparison Shopping)
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14
EOQ Inventory Downsizing (Holding Cost) (Economies From Order
Quantities)
EOQ (Inventory Downsizing Management)
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15
EOQ Safety Stock
: .
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(Economic Order Quantity, E.O.Q, Q*)
E.O.Q Q* = O = Ordering Cost C = Carrying Cost S =
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1. (Economic Order Quantity)
C
SO2E.O.Q Q* =
-
()
2.
=
Q
S=
-
()
3. (Ordering Cost)
Ordering Cost = X
= Q
S
Q
S=
-
()
4. (Carrying Cost)
Carrying Cost = X 2
=
2
QC=
2
C X Q
-
()
5. (Total Cost)
Total Cost = +
=
=
OC + CC
Q
S
2
QC+
-
Q*
=
=
OC = CC
Q
S
2
QC
2SO = Q2C
= Q2C
S2
-
Q*
=
= Q*C
SO2
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1 1,000 15 30 10%
1. 2. 3. 4. 5.
1
-
1.
C
SO2
15%10
30 x 1,000 x 2
5.1
000,60
000,40
E.O.Q. Q* =
=
=
=
= 200
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200
000,1
2.
=
=
==
Q
S
5 72 1
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3. (Ordering Cost)
Ordering Cost =
=
=
=
X
Q
S
200
30 x 1,000
5 X 30 = 150
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4. (Carrying Cost)
Carrying Cost =
=
=
=
X 2
2
QC
)15%(102
Q5.1
2
200=
150
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5. (Total Cost)
Total Cost ==
=
=
=
+
OC + CC
Q
S
2
QC+
150 ( 3) + 150 ( 4)
300
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Do you have
any questions?
??
