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Six sigma ppt
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- 2. TOPICS COVERED • INTRODUCTION •DEFINITION OF SIX SIGMA • OBJECTIVES AND BENEFITS OF SIX SIGMA • ELEMENTS OF SIX SIGMA • SIX SIGMA METHODOLOGIES • SIX SIGMA TECHNOLOGICAL TOOLS
- 3. INTRODUCTION • Six Sigmais a set of techniques, and tools for process improvement. It was developed by Motorola in 1986. • Sir Bill Smith, “ the Father of six sigma” introduce this quality improvement Methodology to Motorola. • Six Sigma is now an enormous 'brand' in the world of corporate development.
- 4. DEFINITION OF SIXSIGMA: • Six Sigma is a method aimed to eliminate defects for achieving six standard deviations , which is the difference between the mean and the nearest specification limit in the process of a product /service • Six Sigma approach is a collection of managerial and statistical concept and techniques that focuses on reducing variation in processes and preventing deficiencies in product. • A six sigma process is one in which 99.9999966 % of the products manufactured are statistically expected to be free of defects (3.4 defects per million).
- 5. SIX SIGMA METRICES () Total Numberof Defects DefectsPerUnits DPU Total Numberof productUnits ( ) Total Number of Defects Defects Per opportunities DPO Total opportunity ( ) *1000000 3.4 Defects Per Millionopportunities DPMO DPO SixSigma DPMO
- 6. OBJECTIVES AND BENEFITSOF SIX SIGMA: OBJECTIVES Critical to Quality Defect Variation Stable operations Reduce costs BENEFITS Performance Sustained Success Enhance customer value Strategic change
- 7. ELEMENTS OF SIXSIGMA CUSTOMERS EMPLOYEESPROCESSES ELEMENTS
- 8. TYPES OF SIXSIGMA BELTS SIX SIGMA BELTS MASTER BLACK BELTS GREEN BELTS BLACK BELTS
- 9. SIX SIGMA METHODOLOGIES DMAIC -Define,Measure,Analyse,Implement and Control. DMADV – Define,Mesure,Analyse,Design and Verify
- 10. • DMAIC isused for projects aimed at improving an existing business process. • DMADV is used for projects aimed at creating new product or process designs.
- 12. DMADV METHODOLOGY • Define: Defines the problem or project, which needs attention. • Measure : Determine customer needs and specifications. • Analyse : Analyse the process for meeting the customer needs. • Design : Design a process which meets customer needs. • Verify : The design, performance and the capacity of meeting customer needs are verified.
- 13. SIX SIGMA TECHNICALTOOLS • PROCESS MAP • CRITICAL TO QUALITY TREE • HISTOGRAM • PARETO CHART • CAUSE AND EFFECT DIAGRAM • AFFINITY DIAGRAM • SCATTER DIAGRAM
- 14. PARETO CHART • Basedon the principle that 80 per cent of the trouble is due to 20 per cent of the problems. • Bars are arranged in the decreasing order of heights from left to right.
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- 16. CAUSE AND EFFECTDIAGRAM • Helps to identify, sort and display possible causes of a quality related problem of interest. Ishikawa diagram Fish bone diagram
- 17. Example Fish bonediagram
- 18. Affinity Diagram • Itconsolidates the huge information into clusters of ideas which have more similarity/Affinity. • It is useful in the measure and the analyse step of six sigma project.
- 19. Steps of AffinityDiagram • Right team • Understanding of problem • Generate and record ideas • Arrange the card in natural groupings • Create header • Finalize the diagram
- 20. Grease Timer Grease Pressure RotationPPM Grease Seconds Grease Filling Adjustment Handling Torque CheckingUneven Sequence of Operation 0perator error Pressure Variation Uneven Setting of Grease Drum Grease Properties Wrong Setting Socket Collection Timer Variation Affinity diagram is used to organize the brainstormed causes Example - Affinity Diagram Peening Pressure
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