S标准培训教材英文.ppt

6 Overview
Measurement System How Do We Arrive at Sigma?
Identify the CTQs
• “Critical to Quality” Characteristics or the Customer Requirements for a Product or Service
Average Company in 3 to 4Range
6 Overview
Measurement System
A Graphic/Quantitative Perspective on Variation
Number of People0 7:15 7:30 7:45 8:00 8:15 8:30 8:45 9:00 9:15
Measuring & Eliminating Defects is the “Core” of Six Sigma
6 Overview
Measurement System
Some Sigma “Benchmarks”
SIGMA LEVEL

DEFECTS per MILLION
OPPORTUNITY
to Design for Quality Concepts • Has Support and Commitment of Top Management
It Works!!!
6 Overview
Sigma: A Measure of Quality
Sigma 3
Spelling
1.5 Misspelled Words per Page in a Book
$2 Indebtedness
6 Seconds
of the Books in a Small
per $1 Billion in Assets
per Century
Library
6 is Several Orders of Magnitude Better Than 3!!!
6 Overview
“...will bring GE to a whole new level of quality in a fraction of the
time it would have taken to climb the learning curve on our own.”
John F. Welch, Jr. 1995 GE Annual Report
We Must Acknowledge Our Vulnerabilities • Poor Quality That Impacts Customers • Problems with NPI • Too High Internal Costs
We Need a Major Initiative to Move From Where we Are to Where we Want to be
6 Overview
Why Does GE Need A Quality Initiative?
GE Raising The Bar • New Goal to be “Best in the World” vs. #1 or #2 • Customers are Expecting More, we Must Deliver • “Ship-and-fix” Approach no Longer Tolerated in the Market • Aim to Speed Past Traditional Competitors in 5 Years • Goal Consistent with Reduced Total Costs
Where Does “Six Sigma” Come From?
• Mikel J. Harry one of the Original Architects • Previously Headed Quality Function at ABB and Motorola • Now President/CEO of Six Sigma Academy in Phoenix, Arizona • Has Consulted for Texas Instruments, Allied Signal (and others) • Currently Retained by GE to Teach the Implementation,
• If we don’t know much about it, we can’t control it.
• If we can’t control it, we are at the mercy of chance.
Mikel J. Harry President & CEO Six Sigma Academy, Inc.
• Proven Successful in “Quality-Demanding” Industries e.g., Motorola, Texas Instruments (many process steps in series)
• Proven Method to Reduce Costs • Highly Quantitative Method – Science and Logic Instead of Gut Feel • Includes Manufacturing & Service (close to customer) and Provides Bridge
• Six Sigma Structure
• Key Concepts & Tools
• A Practical Example
An Overview....Not a lot of Details!!
6 Overview
“Six Sigma”
• If we can’t express what we know in the form of numbers, we really don’t know much about it.
6 Overview
Problem Solving Approach
Off-Target
Target
Unpredictable
Target
LSL Defects
USL
Center Process
On-Target
Target
LSL
USL
Reduce Spread
“Lower Specification Limit”
2 1/2 Days per Century
5
1 Misspelled Word in
a set of Encyclopedias
$570 Indebtedness per $1 Billion in Assets
30 Minutes per Century
6
1 Misspelled Word in all
PPM
{ IRS Tax Advice
2
308,537
{ Restaurant Bills Airline Baggage Doctor’s Prescription
3
66,807
{ GE Average Company
4
6,210
5
233
6
3.4
{ Best Companies Airline Safety
Define Defect Opportunities
• Any step in the process where a Defect could occur in a CTQ
Look for Defects in Products or Services
• Count Defects or failures to meet CTQ requirements in all process steps
6 Overview
• Six Sigma: - A Definition - Applied to GE - GE Quality Initiative - Why This Approach? - Origin of Six Sigma - The “Breakthrough Strategy” - Arriving at Sigma
So...What is Six Sigma?
• A Measurement System • A Problem-Solving Approach • A Disciplined Change Process
Measure
Analyze
Improve
Control
“THE SIX SIGMA BREAKTHROUGH STRATEGY”
LSL
USL
“Upper Specification Limit”
Less Variation Means Fewer Defects & Higher Process Yields
6 Overview
5
4
3
2
1
Estimated Cost of Failure in US Industry is 15% of Sales; Taking GE From a 3 to a 6 Company Will Save ~ $10.5 Billion per Year!
Why “Six Sigma”?
Time
Average Value
Many Data Sets Have a Normal or Bell Shape
6 Overview
Problem Solving Approach
Off-Target
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