Title: Material Requirements Planning(MRP)
1- ????????????????????? PowerPoint ????????????,
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- Material Requirements Planning(MRP)
2????
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3??????(MRP)
- MRP??????????,?????????????????,??????????????????
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4???????MRP?
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5???????
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6MRP?????
- ???????,???????,??????????????
- MRP???????????????,?????????
7MRP???
- ???????
- ????
- ????(40)
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8MRP???(?)
- ???????????????????????????????
- ????????
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9MRP??????
- MRP???????????????????????????????????????????????
?????????????????????????? - MRP????,??????,??????????????????????????????????
10MRP??????
???????
MRP
???? ??
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????????
???? ???
???
???????
11MRP???
- ??????? (Master Production Schedule,MPS)
- ??????(Bill of Material, BOM)
- ??????(Inventory File)
12???????(MPS)
- ????????????????MRP ?????
- ???????????
- ???????????????????
- ???????????,??????? ???
13???????(MPS)
14??????(Bill of Material,BOM)
- BOM?????????,???????????
- ???????
- ?????
153-??????????
3-?????
?? 0
?? (1)
?????? (1)
???? (3)
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1?
3?
2?
?? (2)
???? (6)
?? (1)
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4?
1?
2?
2?
3?
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3?
3?
16??????(BOM)
?? ?? ???? ?? 0 - - - - 3-????? ? 1 - 1 - -
- ??????? ? 1 - - 2 - - ???? ? 1 - - - 3
- ?? ?? 60 - - 2 - - ???? ? 6 - 1 - -
- ?? ? 1 - 1 - - - ???? ? 3 - - 2 -
- ???? ? 1 - - - 3 - ?? ?? 25 - - 2 - -
?? ? 1 - - 2 - - ?? ? 2
17??????(Inventory File)
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- ?????(???)
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- ??(??)??
- ?????
18??????
1. ????????? 2. ????????? 3. ?????????
?????? 4. ????????? ?????? 5. ??????????? 6.
???????? (?? ???????)
19MRP ???
- ??
- ???????
- LLC
- low-level-code ????????????????
20MRP ??????
- ??(Lot size)
- ????????????
- ??? (lead time,LT)
- ?????????????
- PD (past-due)
- ?????????,??????
- ???(Gross requirements, GR )
- ??(??)???????????
21MRP ??????(?)
- ?????(Scheduled receipts,SR)
- ????????????????????
- ????(Projected on hand)
- ?????????????? ,It
- ????(Net requirements,NR)
- ??????????????????
- ????????(Planned receipts, PR)
- ????????????
- ????????(Planned releases)
- ??????????
22???????
- It It-1 SRt PRt - GRt
- NRt GRt - SRt - It-1
23XYZ?????
A LT3
B LT2
C(3) LT4
D(2) LT2
D(3) LT2
?? ???? ????? ???? ??????? A
10 0 1 100, ? 8? B 5 0 1 200, ? 6? C
140 0 150 - - - D 200 250, ? 2? 250 - - -
24A?B?MRP??
25C?D?MRP??
26XYZ?????????
?? ?? ???? 1 C 150 2 D 250 3 D 250
4 B 195 5 A 90
27??????
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28MRP???
- ?????????
- ??????
- ?????
- ?????
- ??????
- ?????MPS
29??????Capacity Requirements Planning (CRP)
- ??????????????????????
- ??????
- ???????????
30??????(CRP)
MRP ?? ??? ???
???? ?? (CRP)
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???? ??
??????? ????
31??????
???? (??)
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1 2 3 4 5 6
?? (?)
32????????
???? (??)
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1 2 3 4 5 6
?? (?)
33?????????
- 1. ???????
- 2. ???????
- 3. ????????
34?????????
- 1. ???????
- 2. ???????????????????
- 3. ??????????????????
- 4. ????????
- 5. ??
- 6. ?????????
- 7. ???????
- 8. ?????????
35??????Manufacturing Resource Planning (MRP II)
- MRP???
- ????????????????
- MRP II ?????
- Service Requirements Planning (SRP)
- Business Requirements Planning (BRP)
- Distribution Requirements Planning (DRP)
36??????(DRP)
- DRP???MRP?????????????????????????????????????????
??,?????????????????????????
37DRP???
- ABC?????????,??????????????????
- ?????????????LT1?,Q50??,SS10??
- ?????????????LT2?,Q60??,SS15??
- ??????????????LT1?,????Q200??,SS40??
38(No Transcript)
39MRP II ??
- ??
- ??????
- ???? /???????(MPS)
- ????/ BOM??
- ????
- MRP
- ??????
- ????
- ??
- ??
- ????
40MRP???
- ???????? ????????
- MRP ?????????
41????(Lean Production)
42???????????
- ???????(JIT)
- ?????????
- ?????????
- ????(Team)???????????????????????
- ???????????????
43?????????
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- ?????????????????
- ????????????????
- ????
- ???????,???????????????
44?????(Just in Time,JIT)
- Continuous Flow manufacture(IBM)
- Stockless Production(HP)
- Management by Sight(GE)
- Lean Manufacturing(Boeing)
- Short Cycle Manufacturing(Motorola)
- Toyota System(some Japanese firms)
- Time-Based Competition
45JIT ??
- JIT??????????????????,???????,??????,?????????,???
????????????
46? ?
- ??????????????????????????????????????????
47?????
- ??????(Watching a machine run)
- ?????(Waiting for parts)
- ????(Counting parts)
- ????(Overproduction)
- ???????(Moving parts over long distances)
- ??(Storing inventory)
- ????(Looking for tools)
- ????(Machine breakdown)
- ??(Rework)
48???JIT ?
- ??????????????????????,?????????
- ????????
- ??????????
- JIT??? ??????.
49JIT???
- ???(zero defects)
- ????????(zero set-up time)
- ???(zero inventory)
- ?????(zero handling)
- ??????(zero breakdowns)
- ???????(zero lead time)
- ??????(lot size of one)
50JIT?????
1. ?????(Uniform production) 2. ??????????(Cel
lar layouts) 3. ???????(Pull system) 4. ??????
(Kanban production control) 5. ?????(Small-lot
production) 6. ??????(Quick setups) 7. ???????
??(Flexible resources) 8. ???????(Quality at
the source) 9. ?????????(Total
maintenance) 10. ?????(Supplier networks)
511. ?????
- JIT?????????????????????????????,?????????????????
???????????(??)????
52??????
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1 2 3 4
53????????
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54?????????
???? ???? ??(?/?) ??A 400 16 ??B 300 12 ??C 200 8
??D 100 4 25????,7??/? 1000?/25?40?/? 40?/7??5.
71?/?? 60??/5.71?10.5??/?
55??????(Mixed-Model Sequencing)
- A(400)--B(300)--C(200)--D(100)
- A(16?/?)--B(12?/?)--C(8?/?) --D(4?/?)
- AAAA--BBB--CC-D
- A-B-C-A-B-C-A-B-A-D
56?????????
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572. ?????(Cellular Layouts)
58???????
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59???????(?)
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60???????
- ?????(Process Layout)
- ?????????
- ?????(Product Layout)
- ?????????????????????
- ?????(Fixed Position Layout)
- ???????????
61?????(Hybrid Layouts)
- ????(Cellular layouts)
- ????????????
- ??????(Flexible manufacturing systems,FMS)
- ?????????????
- ????????(Mixed-model assembly lines)
- ?????????????
62?????????????
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63?????????????
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64?????(Cellular Layouts)
- ????????????(????),???????????
- ???????????????
- ?????????????????
653. ??????(Pull System)
66??????
- JIT????????,???????????????????????????????,??????
????????????????
674. ????????(Kanban Production Control)
68????????
- ??(Kanban)??????????,????????????????????
- ???????????????
- ?????????
- ??????????????
- ????????
- ???????????
69?????
????. 7412 ???? ??
???? 25 ???? A
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70?????
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715. ????? (Small-Lot Production)
72?????
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73???,?????
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800
400
200
74?????(?)
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75???????
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76??????
77??????????
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78?????
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79?????????????
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80????????
816. ??????(Quick setups)
82?????????
- 1. ?????????????????
- 2. ???????????????
- 3. ?????????????????
- 4. ????????????????????????????
- 5. ???????
- 6. ??????????
83???????????
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84???????????
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857.?????????(Flexible resources)
86?????????
- ??????(Multifunctional workers)
- ????(General purpose machines)
- ???????????(Study operators improve operations)
878.???????(Quality At The Source)
88???????
- Jidoka ??????????
- Andon ?????????????
- ?????????????????????,??????????????
- ??????????
- Poka-yoke ??????
89JIT??????
- ???????
- ?????????
- JIT?????????????
- ??????
- ????????
- ???????
- ????
- ???????
909.???????????(Total Productive Maintenance, TPM)
91???????????
- ????(Breakdown maintenance)
- ??????????????
- ????(Preventive maintenance)
- ?????????,?????????
- TPM ????????????????
92TPM ????????
- ?????????????????????
- ???????????,?????????
- ??????????????
- ???????????????
- ?????????????
9310. ?????(Supplier networks)
94????????
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- 2. ????, ??????????????
- 3. ????????????????????
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- 4. ??????????????????
- 5. ???????????????????
- ??,?????????
95JIT?????
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96JIT?????(?)
- ????JIT?????
- ????(?????/????????)
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97JIT?????(?)
- ????--????--?????
- ??JIT???????????
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- JIT ?????
- JIT ???????????
98JIT???
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- 6. ?????
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- 8. ?????????
- 9. ??????????
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- 10. ???????
- 11. ?????????
- 12. ???????
99 ???????JIT
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100MRP?JIT??
- ??????????
- MRP?????????,JIT?????????
- ??????????
- MRP??????,JIT??????
- ?????
- MRP?????,JIT?????
101MRP?JIT??(?)
- MRP???????,??????????,?????????
- JIT?????????,??????????,??????????????,???????
???,?????????