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【正文】 Demystifying Six Sigma What does Six Sigma mean to you ? Many different definitions will try to address three this morning Six sigma as a statistical term Normal Distribution ??? ??? ??? ? ??? ??? ??? Mean Standard deviation ??? ??? ??? ? ??? ??? ??? mean % % % Six sigam as a statistical term ? Values of a standard deviation one sigma = % 317,311 ppm two sigma = % 45,500 ppm three sigma = % 27,000 ppm six sigma = % ppb Six sigma as a quality term ? Invented by motorola in the mid 80’s ? Service marked and registered by Motorola ? Accepted by all countries ? Accepted by all anization ? Mean +? Virtually no defects ( ppm) Lower Specifacation limit upper Specifacation limit 6? 5? 4? 3? 2? 1? 0 +1? +2? +3? +4? +5? +6? Allow s for variation in measurement Sigma shift + Virtually no defects ( ppm) Six sigma as a quality term Six Sigma = ppm defective Six sigma is a way to change an anizations culture ? Provides a means of delivering Total customer satisfaction ? Focuses everyone in the anization on the same objective Definition of defect Defect are good! “ Associates need to feel fortable in identifying and reporting defects.” The effects of defects ? Every occurrence of a defect within the process requires time to inspect,fix,and reinspect. ? Average cycle time is directly proportional to the total number of defects in the process. Wele to Motorola’s Quality Story Culture Culture guides the enterprise’s DayToDay behavior The nature of culture ? Culture provides its members with guidelines for dealing with just about everything ? Much of every culture is cvert and implicit largely submerged like an iceberg ? Cultures are constantly changing and evolving. ? When culture and strategy clash,invariably culture wins out. ? If the anizational culture does not embrac initiatives related to change,overall change efforts will fail There is no such thing as “We’re different” WE’RE DIFFERENT Functions in a typical anization The evolution of motorola’s quality culuture 1979 “ Our quality stinks” 1980 corporate quality officer named 1981 motorola training education center(Mtec) established 1985munications sector begins total defects per unit measurement(TDU) 1986 july manufactured products 1987 november sales orders 1986chairman changes agenda of customer visits 1987 created “the card” Evolution continues! 1987 Corporation adipts six sigma 2 year 10x。 , March 9, 2023 雨中黃葉樹，燈下白頭人。 2023年 3月 9日星期四 1時 29分 48秒 13:29:489 March 2023 1做前，能夠環(huán)視四周；做時，你只能或者最好沿著以腳為起點的射線向前。 。勝人者有力，自勝者強。 2023年 3月 9日星期四 下午 1時 29分 48秒 13:29: 1最具挑戰(zhàn)性的挑戰(zhàn)莫過于提升自我。 2023年 3月 9日星期四 1時 29分 48秒 13:29:489 March 2023 1空山新雨后，天氣晚來秋。 , March 9, 2023 很多事情努力了未必有結(jié)果，但是不努力卻什么改變也沒有。 :29:4813:29Mar239Mar23 1故人江海別，幾度隔山川。 – Delivery defects。therefore… Decreases “Manufacturing” cost Cost/Quality Six sigma has shown that The highest quality producer is The lowest Cost producer ? TDU is the best measure of the over all quality of the process – TDU is the independent variable – Process yields are dependent upon TDU The mon metric: Total defects per unit(TDU) Defining a unit A “unit” may be as diverse as a : ? Pi
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