ISigma Six isicwangciso solawulo lwezoshishino esasikwakhiwa yi-Motorola kwiminyaka yee-1980, esetyenziswa ngamaqela amaninzi akwa-Fortune 500 . Isetyenziswa ngokuyinhloko ukuchonga nokulungisa iziphene kunye nesiphene kwimveliso okanye kwinkqubo yezoshishino. Inkqubo yesithandathu yeSigma isebenzisa iindlela ezininzi zeendlela ezifanelekileyo kunye nezixhobo ezisetyenziswe ngabaSebenzi abaSebenzi abaSebenzi abathandathu. Indlela yokuxazulula ingxaki ye-DMAIC ingasetyenziselwa ukuncedisa nayiphi na ingxaki eyenzekayo, ngokuqhelekileyo yilabo abaqeqeshiweyo kwintlangano abaye bafikelela kumgangatho wobhanti obuluhlaza.
Indlela yeDMAIC
Inkqubo yokuxazulula ingxaki ye-DMAIC yindlela yokusebenza engasetyenziselwa nayiphina iiprojekthi okanye uphuculo lomgangatho olufunekayo. Ithenda ye-DMAIC ibhekisele kumanyathelo amahlanu aphambili kwinkqubo: Chaza, Ukulinganisa, Ukuhlalutya, Ukuphucula nokuLawula.
- Chaza - Kubalulekile kwi-Six Sigma ukuchaza ingxaki okanye iinjongo zeprojekthi. Ingakumbi ngakumbi ingxaki ichazwa ngakumbi ithuba lokufumana amanyathelo kwaye ngokugqibeleleyo ukuzalisa iphrojekthi okanye ukulungisa ingxaki. Ingcaciso kufuneka ichaze umbandela ngokuchanekileyo ngokumelwa kwamanani. Ngokomzekelo, "iimpahla ezigqityiweyo ezigqityiweyo ukusuka kumgca wokuvelisa ziye zanda iipesenti ezili-17 kwiinyanga ezintathu zokugqibela". Ingcaciso yengxaki okanye iprojekthi ayifanele ibe yinto engacacanga njengokuba "izinga liye lawa." Njengengxenye yenkcazo yesigaba, ububanzi beprojekthi, okanye ukukhutshwa kufuneka kuchazwe kunye neenkqubo zoshishino ezichaphazelekayo.
- Ukulinganisa - Xa iprojekthi okanye ingxaki ichaziwe ngoko kukho imfuneko yokwenza izigqibo ezenziwe kwinqanaba elongezelelweyo elifunekayo ukulinganisa ingxaki. Ngokomzekelo, ukuba inkcazo yengxaki "yonakaliswe iimpahla ezigqityiweyo ukusuka kumgca wokuvelisa ziye zanda iipesenti ezili-17 kwiinyanga ezintathu zokugqibela," ke kufuneka kwenziwe amanyathelo angaphezulu ukuze abone okokugqibela iimpahla ezonakalisiweyo, xa zonakaliswe, umonakalo, njl njl
- Hlaziya - Xa isigaba sokulinganisa sichaze ukulinganiswa kokufakela, idatha iqokelelwe ize ihlaziywe. Kule ngongoma, kunokwenzeka ukuba kuqinisekiswe ukuba ingxaki iyasebenza okanye ingaba sisiganeko esingenangqungquthela esingenayo isizathu esithile esingalungiswa. Idata eqokelelwe ingasetyenziselwa njengezinga lokusetyenziselwa ukulinganisa kunye nemilinganiselo emva kokuba iprojekthi igqityiwe ukuqinisekisa ukuphumelela kweprojekthi.
- Ukuphucula - Emva kokulinganisa kuthathwe kwaye kuhlaziywe, izisombululo ezinokwenzeka zingaphuhliswa. Idatha yokuvavanywa ingadalwa kwaye iiphononongo zophando ziqaliswe ukufumana ukuba zeziphi izisombululo ezinika ukuphuculwa kowona mbandela xa kuthelekiswa nokulinganiselwa kwangaphambili. Iqela kufuneka lijonge neziphumo ukuqinisekisa ukuba akukho miphumo engalindelekanga kwisicombululo esikhethiweyo. Xa isisombululo esifanelekileyo sikhethwe, ngoko iqela liyakhula iplani yokuphunyezwa kunye nexesha lokugqiba le projekthi.
- Ukulawula-Emva kokuphunyezwa kwesisombululo okanye iprojekti kukho kufuna ukuba kubekho inani lolawulo oluza kufakwa ukuze kwenziwe amanyathelo ukuqinisekisa ukuba isisombululo sisasebenza kwaye ukukhusela ukuphindaphinda. Amanqanaba okulawula anokucwangciselwa iintsuku ezithile, umz. Nyanga zonke, imihla ngemihla, kunye nonyaka, njl. Isisombululo kufanele senziwe ngokucacileyo kwaye kukho nayiphi na enye imibhalo enxulumene nayo.
Isishwankathelo
Indlela yokuxazulula ingxaki ye-DMAIC inokuvelisa ukuphuculwa okubalulekileyo kwintlangano esebenzisa indlela ye-Six Sigma kunye nezixhobo. Le ndlela inika isicwangciso esithatha isinyathelo esinikela imibutho indlela yokulandela ukuze imiba ixazululwe ngokusebenzisa indlela ehleliweyo.