-961- By: Dr. Tsung-Nan Tsai

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(2~3 weeks), , (QC) (8-10 weeks) - QFD

- FMEA

Example(Opportunity, O)OUTOP (Total Opportunities) (Defect Per total Opportunities) DPO = D/TOP (Defects Per Million Opportunities, DPMO)

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

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 9~4% profit margin near 0 wastes. (Methods + Discipline).

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

Preface ()

(Taguchi Method)S/NQFDTRIZ21

(Off-Line)Quality Designed-In

DOE

AN EXPERIMENTAL STUDY FOR OPTIMIZATION OF ELECTRICAL DISCHARGE TURNING (EDT) PROCESS ()

:

Pulse-on timeVoltagePulse-off timeServoRotational speedOrthogonal array L18 (21 37)(S/N)

(ANOVA)(Regression equation) ANOVAS/N

0.05

S/N

Intensity Contour

S/N