2069 | P a g e UNDERSTANDING THE EFFECT OF LEAN SIX SIGMA COMBINATION Shweta 1 , Sandeep Singhal 2 1,2 Department of Mechanical Engineering, National Institute of Technology, Kurukshetra, (India) ABSTRACT Lean Six Sigma emerges as an impressive philosophy which can cope with latest challenges in an organization. This paper provides basic idea about combined effect of lean and Six Sigma concept and problem solving approach of lean Six Sigma. It also try to find difference in usage of Six Sigma approach and Deming ’s basic PDCA approach. The paper discusses the viewpoints of researchers about this field through literature review. Keywords : DMAIC , Lean, PDCA, Six Sigma ,Wastes I. INTRODUCTION 1.1 Lean Concept Lean was introduced on the 1980s Toyota Production System. It is a well known management philosophy which basically focuses on getting right services and product at right places and time in the right quantity to right customer by minimizing unwanted wastes involved in the process and hence achieves perfect flow of work and flexibility in the system. 1.2 Wastes Required To Remove Overproduction- Producing more than required Transport- Unnecessary movement of materials Waiting - Inefficient utilization of people and resources Motion - ineffective people movement Inventory – Unnecessary material laying around Over processing – producing quality more than required by customer Defects/ Corrections- Time spent in producing defective products Underutilized people – Less dedication towards value addition process 1.3 Six Sigma Concept It was first outlined by Motorola in 1985 as a statistical modeling of manufacturing processes Six Sigma is a managerial approach which seeks to improve the quality of process outputs by identifying and removing the causes of defects. Six Sigma approach is a collection of statistical concept and techniques that focuses on reducing variation in processes. In a process that has achieved Six Sigma capability, the variation is small compared to the range of specification limit. A Six Sigma process is one in which 99.9999966% of the products manufactured are statistically expected to be free of defects (3.4 DPMO (defects per million
2070 | P a g e opportunities).Six Sigma is a one of clever way of branding and packaging many aspects of Total Quality Management (TQM). II. SIX SIGMA GOALS • Minimize Variation: Process encounters fewer defects. • Maximize Consistency: Products & services can be delivered reliably as expected . Lean and Six Sigma complement one other • Lean Optimizes Six Sigma • A comprehensive tool set to increase the speed and effectiveness of any process III. METHODOLOGIES OF SIX SIGMA Six Sigma projects follow two project methodologies DMAIC : DMAIC (Define, Measure, Analyze, Improve, Control) is used for projects aimed at improving an existing business process.
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- Fall '15
- Mechanical Engineering, Lean Six SIgma