[PDF---ENG]-Six-Sigma-And-Lean-Thinking.ppt

,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Six Sigma and Lean thinking,Miguel Lopez,M&D Consulting Agency,Agenda,Six Sigma,Introduction,Symbols,Definitions,The k*sigma importance,Example,Organizational levels,Lessons learned,Agenda,Six Sigma,Introduction,Vision,Definitions,Quote,Lessons learned,SIX SIGMA,Introduction Six Sigma,What is a process?,What is Quality Control?,What means to say,“a process quality is in control”?,What is a normal distribution?,What is“Sigma”?,What is a manufacturers specification limit?,Symbols,Standard deviation=,Average=,Normal distribution=N(,),Definitions,Sigma is:,The square root of the variance,What sigma means is the,Definitions cont.,Normal distribution,=0,=1,Blue is N(0,1),Red is,cummulative,N(0,1),Green,brown,and pink is 1,2,and 3,distances respectively,Definition cont.,Specification limit,It is the range of values considered acceptable in the manufacturing of a specific product for a specific characteristic.,Six Sigma,To accommodate six times the standard deviation value in between the manufacturers specification limits,Definitions cont.,The universal formula,The k*sigma importance,Example,Extrusion of plastic,Assume we are interested in a plastic extrusion process.We can control the temperature at which the plastic is melted and the rate of extrusion.,The manufacturers limits are,+/-2mm,The actual situation is represented in the next slide.,Example cont.,=0,=1,USL=2,LSL=-2,Example cont.,What can we do to improve the process?,Reduce the variance thereby reducing the standard deviation.,How?,Slow the extrusion rate.,Example cont.,=2,=.5,USL=2,LSL=-2,Example cont.,What can we do to improve the process?,Modify something else,What?,The melting temperature.,How?,A higher temperature.,Example cont.,=-1,=1.5,USL=2,LSL=-2,Example cont.,Still wrong.What next?,We have to continue trying different combinations,Ej,.,High temperature and high extrusion rate,High temperature and low extrusion rate,Low temperature and high extrusion rate,Low temperature and low extrusion rate,Change the type of plastic,Among others,Example cont.,The answer should look in the end something like this.,Lessons learned,Six Sigma,does not,have a unique way of solving problems in the industry.,It requires experimentation,studies,and good applied Engineering to solve the problems.,Six Sigma is a tool that if applied correctly the quality of the product is guaranteed by showing if non-conforming products are going to happen or not.,Organizational levels,Since Six Sigma is very famous and it is one the fashion statements in the industry,levels have been made to differentiate how much knowledge a person has in six sigma,Green belt,Black belt,Master black belt,Organizational levels cont.,Green belt,Black belt,Organizational levels cont.,Master black belt,Lean Thinking,Introduction,What are constraints?,What is efficiency?,What is productivity?,What is added value?,What is cost efficient?,What is“lean”?,What is thinking?,Vision,Definitions,Quote,“Common sense is,the least common,of senses.”,Jos,Duprey,Lessons learned,QUESTIONS?,