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Six Sigma: The Definitive Guide for Quality Improvement

Learn the fundamentals of Six Sigma methodology, application areas, statistical explanations, and how it can help produce better products with fewer defects. Discover the key measures, statistical backgrounds, and performance standards associated with Six Sigma.

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Six Sigma: The Definitive Guide for Quality Improvement

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Presentation Transcript

  1. Six sigma very basic concise explanation and useofit Skorkovský KPH_ESF_MU BRNO_Czech Republic

  2. Six Sigma method • Motorola 1985 • Use in order to produce better products nad less problem processes • PPM- parts per million ->4,4 defects /million opportunities • Six-Sigma-DMAIC methodology

  3. WhereSix Sigma methodcanbeapplied

  4. Normaldistribution Normal distribution curve that illustrates standard deviations. Each band has 1 standard deviation, and the labels indicate the approximate proportion of area (note: these add up to 99.8%, and not 100% due to rounding for presentation.)

  5. SIX SIGMA Statistical background Some Key measure Target = m Resource : Pro-Enbis

  6. Statistical background ‘Control’ limits + / - 3 s Target = m

  7. Statistical background Required Tolerance U S L L S L + / - 3 s Lowerspecificationlevel Upperspecificationlevel Target = m

  8. Statistical background Tolerance U S L L S L + / - 3 s Target = m + / - 6 s Six-Sigma

  9. Statistical background Tolerance U S L L S L + / - 3 s 1 3 5 0 1 3 5 0 p p m p p m Target = m + / - 6 s Ppm= parts per million

  10. Statistical background Tolerance U S L L S L + / - 3 s 1 3 5 0 1 3 5 0 p p m p p m 0 . 0 0 1 0 . 0 0 1 p p m p p m Target = m + / - 6 s

  11. Statistical background • Six-Sigma allows for un-foreseen ‘problems’ and longer term issues when calculating failure error or re-work rates • Allows for a process ‘shift’ (1,5 σ)

  12. Statistical background Tolerance U S L L S L 1 . 5 s 3 . 4 6 6 8 0 3 p p m p p m 0 p p m 3 . 4 p p m m + / - 6 s

  13. Performance Standards  PPM Yield 2 3 4 5 6 308537 66807 6210 233 3.4 69.1% 93.3% 99.38% 99.977% 99.9997% Current standard World Class Process performance Defects per million Long term yield

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