Six Sigma is a set of techniques and tools for process improvement. Six Sigma is much more cost reduction-oriented than traditional continuous improvement.Six Sigma is organized around creating champions, black belts, green belts, and in some situations, yellow belts.It was developed by Motorola in 1986. This techniques seeks to improve the quality of process outputs by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes. Six Sigma projects follow two project methodologies inspired by Demings Plan-Do-Check-Act Cycle (PDCA). These methodologies, composed of five phases each, bear the acronyms DMAIC and DMADV. DMAIC is used for projects aimed at improving an existing business process. DMADV is used for projects aimed at creating new product or process designs DMAIC:- - DEFINE the system, the voice of the customer and their requirements, and the project goals, specifically. - MEASURE key aspects of the current process and collect relevant data. - ANALYZE the data to investigate and verify cause-and-effect relationships. - DETERMINE what the relationships. Seek out root cause of the defect under investigation. - IMPROVE or optimize the current process based upon data analysis using techniques such as design of experiments, poka yoke or mistake proofing, and standard work. Set up pilot runs to establish process capability. - CONTROL the future state process to ensure that any deviations from the target are corrected before they result in defects. DMADV also known as DFSS ( design for six sigma ) - DEFINE design goals that are consistent with customer demands and the enterprise strategy. - MEASURE and identify CTQs (characteristics that are Critical To Quality), product capabilities, production process capability, and risks. - ANALYZE to develop and design alternatives - DESIGN an improved alternative, best suited per analysis in the previous step - VERIFY the design, set up pilot runs, implement the production process and hand it over to the process owners. Reasons for Six Sigma Failure - Lack of leadership by champions - Misunderstood roles and responsibilities - Lack of appropriate culture for improvement - Resistance to change and the Six Sigma structure - Faulty strategies for deployment - Lack of data
Posted on: Sun, 22 Jun 2014 12:31:33 +0000