By: Dr. Tsung-Nan Tsai

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???? -961- ????????

• By Dr. Tsung-Nan Tsai

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• ??(15) ?????????(10) 
• ?????????? (????????e-mail??)
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• ??????(25)
• ???(25) 
• ????(30)

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• ????59 Pass57 and 58 ??57(?)????????
• ?????A4??????????????????(??????),????????0.5??

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• ??????????????????
• ?????? (23 weeks)
• ??, ??, ?????(??QC????)
• ??????? ???? (8-10 weeks)
• ???? - QFD

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• ???? - FMEA
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Example

• ????????(Opportunity, O),????????????????
• ???O????U,??????TOP (Total Opportunities),??????
  (Defect Per total Opportunities) DPO D/TOP?
• ???????(Defects Per Million Opportunities,
  DPMO)?????????????????

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• Efficient Operations Management (O/M)
• Production planning
• Bottleneck management
• Inventory management
• Waste reduction
• etc.

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• 1) Overall system efficiency
• Max good OP/IP
• Min B-OP/IP or B-OP/good OP.
• Opportunity
• Most people look at OP or OP/IP, much fewer
  people look at (B-OP) Waste minutes.
• B-OP waste, bad stock, lost components, scrap,
  etc . (anything OP not useful)
• 1 SVP we play same cost to suppliers and charge
  same price. But 16 vs 94 profit margin ? near
  0 wastes. (Methods Discipline).

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• Individual O/P efficiency
• Production rate
• Time performance (Service rate hit rate cycle
  time)
• Quality/Reliability (????)
• Finance
• Flexibility
• Service

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Preface ???????????

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  ???????????,??????????????????
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• ????(Taguchi Method)????????????????????
• ??????????????????,????????,????????????????,?????
  ?S/N????????????????????????????????????????????
• ????????????????????????,?????QFD?TRIZ???????21???
  ?????????
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• ??(Off-Line)???????????????????????????????,??????
  ????????,???????????(Quality Designed-In),????????
  ???
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?????????

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• ?DOE???????????
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AN EXPERIMENTAL STUDY FOR OPTIMIZATION OF
ELECTRICAL DISCHARGE TURNING (EDT) PROCESS
(????)??????????????????????????????????????,???
??????????????????????????????????,?????????????
????????????????????????,?????????????????????????
??????????????????????????????,???????????????
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• ?????????
• Pulse-on time
• Voltage
• Pulse-off time
• Servo
• Rotational speed
• ??????
• Orthogonal array L18 (21 37)
• ??????
• ?????????(S/N?)

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• ????? (ANOVA)
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• ????(Regression equation)
• ??ANOVA??
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• S/N?

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??0.05
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???? S/N?
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Intensity ?????Contour
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S/N ???????
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