Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving towards six standard deviations between the mean and the nearest specification limit) in any process - from manufacturing to transactional and from product to service.
The fundamental objective of the Six Sigma methodology is the implementation of a measurement-based strategy that focuses on process improvement and variation reduction through the application of Six Sigma improvement projects. This is accomplished through the use of two Six Sigma sub-methodologies: DMAIC and DMADV.
The Six Sigma DMAIC process (defines, measure, analyze, improve, control) is an improvement system for existing processes falling below specification and looking for incremental improvement.
The Six Sigma DMADV process (define, measure, analyze, design, verify) is an improvement system used to develop new processes or products at Six Sigma quality levels. It can also be employed if a current process requires more than just incremental improvement.
- Production system and process is restructured to incorporate efficiency by eliminating wastages.
- Production defects is eliminated through the production process result in reducing cost of checking and rework/repairs.
- Product quality is enhanced continually.
- Result in cost reduction as fewer returns and rejection leading to efficiency of production.
- The broad objective of continuous value addition to products would be materlised.
- Total organization functioning would be enhanced by better and improved utilization of plant and machinery.
- Profitability will get a marked improvement by fewer production delays and wastages.
- Production scheduling and planning could be streamlined to match the estimate/forecast.