最新6西格玛介绍

Six Sigma Process Point of Inflection
1
p(d)
12 3 45
6
T
USL
3
This is a 6 Sigma Process
Benefit of Six Sigma
Cost reduction Productivity improvement Market-share grtime reduction Defect reduction Culture change Product/service development
6西格玛介绍
Scope of Module
What is Six Sigma Why the need for Six Sigma How to apply Six Sigma
3) Six Sigma – A philosophy
Six Sigma is about working smarter, not harder.
Customers’ Needs Internal Metrics
Supplier
Delivery Cycle Time
Customer
Price Need Do Cost
Quality Defects
How to apply Six Sigma?
Input
Process
Output
Unlike conventional improvement programs which
• What is the problem of our focus? • What’s our goal? And by when? • Who’s the customer impacted? • What are the CTX’s in-concern? • What’s the process under investigation?
Special Variation
Natural Variation under 0 (±30)
Historical Level (0)
Reject Rate
Optimum Level (1)
Time
Natural Variation under 1 (±31)
Why needs of Six Sigma?
Six Sigma – aggressive goal
PPM
2 308,537
3 66,807
4
6,210
5
233
6
Process Capability
3.4 Defects per Million Opp.
Sigma is a statistical unit of measure that reflects process capability. The sigma scale of measure is perfectly correlated to such characteristics as defects-per-unit, parts-per million defective, and the probability of a failure/error.
focuses on improving the defects on the “output”, Six Sigma focuses on the “process” that creates or
eliminates the defects.
Six Sigma seeks to reduce variability in a process by means of a systematic approach called the Breakthrough Strategy.
Six Sigma approach
• Identify the Customer’s Need • Center around the Target • Reduce Variation • Reduce Defects
Focus of Six Sigma?
Input
Process
Output
Project Definition
Improve time to market for all products Lead the industry in key technologies Create world-class manufacturing processes Develop strategic supplier relationships Provide best-in-class product and process quality Develop strategic relationships with key customers Become an employer of choice
Discover and neutralize harmful sources of variation
Mistakes are reduced (or eliminated)
Improved process capability
Sigma rating goes up
Quality Breakthrough
The goal of Six Sigma is not to achieve six sigma
levels of quality (i.e. 3.4 dpmo). Six Sigma is about improving profitability; improved quality and efficiency are immediate by-products.
The output (Y) is perceived as a function of the input (X).
• Input to Process • X1, , Xk • Causes • To be Controlled • Key Process Input Variables
(KPIVs)
• Output of Process •Y • Effect • To be Monitored • Key Process Output Variable
(KPOV)
Breakthrough Strategy
Define
The Define phase sets the stage for a successful Six Sigma project by addressing the following questions: