《Talk Understanding Six Sigma（Goldbole wife2016-5-7)1》.ppt

* Six Sigma Strategy Six Sigma places the emphasis on the Process Using a structured, data driven approach centered on the customer Six Sigma can resolve business problems where they are rooted, for example: Month end reports Capital expenditure approval New hire recruiting Six Sigma is a Breakthrough Strategy Widened the scope of the definition of quality includes the value and the utility of the product/service to both the company and the customer. Success of Six Sigma depends on the extent of transformation achieved in each of these levels. * Conventional Strategy Conventional strategy was to create a product or service that met certain specifications. Assumed that if products and services were of good quality. then their performance standards were correct. Rework was required to ensure final quality. Efforts were overlooked and unquantified (time, money, equipment usage, etc). Requirement or LSL Requirement or USL Bad Bad Target Good * Problem Solving Strategy The Problem Solving Methodology focuses on: Understanding the relationship between independent variables and the dependant variable. Identifying the vital few independent variables that effect the dependant variable. Optimizing the independent variables so as to control our dependant variable(s). Monitoring the optimized independent variable(s). There are many examples to describe dependant and independent relationships. We describe this concept in terms of the equation: This equation is also commonly referred to as a transfer function Y=f (Xi) This simply states that Y is a function of the X’s. In other words Y is dictated by the X’s. * Example If we are so good at the X’s why are we constantly testing and inspecting the Y? Which process variables (causes) have critical impact on the output (effect)? Y=f (Xi) Crusher Yield Time to Close = f ( ) = f ( ) Xn Trial Balance Correct Accounts Applied Sub Accounts Credit Memos Entry Mistakes , , , , , Feed Material Type Tool Wear Lu