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Six sigma dmaic tree


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Six sigma dmaic tree

  1. 1. Six Sigma Six Sigma define / measure / analyse / improve / control
  2. 2. 2 Six Sigma Process Define Measure Analyse Improve Control Overview Tools Glossary Examples
  3. 3. 3 overview Six Sigma can be described as …
  4. 4. 4 A business philosophy & strategy adopted by companies who are recognized leaders in world class quality. A Fact based decision making. An integrated part of a management system. A Customer focused determination (Customer “critical-to-quality” factors) where we should focus our quality improvements. …
  5. 5. 5 … Continuous improvement methodology used to improve business processes and products. Utilisation of powerful statistical tools. Statistical measure of process capability.
  6. 6. 6 Understand what customer requires, define the problem and set-up project team. Measure the defects and map process operation. Analyse the data and discover root causes of defects. Improve the process to remove root causes of defects. C control Control and monitor the improvement. I improve A analyse M measuremeasure D define
  7. 7. 7 define define
  8. 8. 8 Six Sigma Process Define Measure Analyse Improve Control SIPOC 1 Customer requirements 2 Process flow 3 Potential VOC (Voice of the customer) Kano model Affinity diagram CTQ tree SWOT analysis Pareto diagram First pass yield Tree diagram Process maps Business case SMART goals
  9. 9. 9 The purpose of business is to create and keep a customer. Peter F. Drucker
  10. 10. 10 measure measure
  11. 11. 11 Six Sigma Process Define Measure Analyse Improve Control right measurement 4 Refined project definition 5 Capable Measurement system 6 Data collection discrete vs. continuous measurable specification normal distribution using Minitab commitment of organization Gage R&R for transactional processes Gage R&R with discrete data Gage R&R with continious data oparational definition interviews data collection plan variation sample pareto diagram histogram control charts process offset test on normal distribution transformation process capability
  12. 12. 12 In God we trust, all others bring data. William Edwards Deming American Statistician, 1900-1993
  13. 13. 13 analyse analyse
  14. 14. 14 Six Sigma Process Define Measure Analyse Improve Control Learning from Y data 7 Evaluation of potential X 8 Filtering of red X1 … X7 Brainstorming FMEA Ishikawa Benchmarking Process analysis F test Confidence interval Anderson Darling test Screening T test ANOVA Levene‘s test Wilcoxon test Man-Whitney test Kruskal-Wallis test Chi-Square test Regression
  15. 15. 15 The structure of a system tends to mirror the structure of the group producing it. Mel Conway April 1968, Datamation
  16. 16. 16 improve improve
  17. 17. 17 Six Sigma Process Define Measure Analyse Improve Control solution finding and verifying 9 Find Major X 10 Optimize adjustment for X solution refinement solution testing system optimization design of experiments DOE
  18. 18. 18 Nothing is more difficult to carry out, nor more doubtful of success, nor more dangerous to handle than to initiate a new order of things. Niccolo Machiavelli
  19. 19. 19 control control
  20. 20. 20 Six Sigma Process Define Measure Analyse Improve Control process tolerances 11 Process tolerances 12 Capable measurement system 13 Capable process buffering of Y-values; Y tolerance limits buffering of X-values; X controll limits Gage R&R for X values Poka Yoke suboptimal X 14 Controlled process Out of Control Action Plan OCAP FMEA Audit quality systems MPSB process management plan control plan project closing process monitoring process management with control charts optimal work instructions feedback control improved process capability
  21. 21. 21 Control your own destiny or someone else will. Jack Welch
  22. 22. 22 Thank You Thank You Edmund Gröpl,
  23. 23. 23 Bonus slides
  24. 24. 24 requirement topic CTQs measurement goal customer requirement quality time cost CTQ tree (Critical-to-Quality)
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