GRUPPARBETE - Luleå tekniska universitet

Innehållsförteckning
1 Introduktion ......................................................................3
2 Teori ...................................................................................4
2.1 Sex Sigma................................................................................... 4
2.2 DMAIC-cykeln........................................................................... 4
2.2.1 Define.................................................................................................. 4
2.2.2 Measure ............................................................................................... 4
2.2.3 Analyse................................................................................................ 4
2.2.4 Improve ............................................................................................... 5
2.2.5 Control................................................................................................. 5
3 Define .................................................................................6
3.1 Bakgrund till problemet och syfte ............................................. 6
3.2 Avgränsning............................................................................... 6
3.3 Beskrivning av den aktuella processen ..................................... 6
3.4 Besparingspotential ................................................................... 6
3.5 Insamling av data....................................................................... 7
3.6 Riskanalys .................................................................................. 7
3.7 Verktygsval................................................................................. 7
3.8 Tidsplan...................................................................................... 8
4 Measure..............................................................................9
4.1 Nulägesbeskrivning ................................................................... 9
4.2 Mätmetod.................................................................................... 9
4.3 Fiskbensdiagram...................................................................... 10
5 Analyse.............................................................................11
5.1 Test av insamlat mätdata ......................................................... 11
5.2 Resultat och beskrivning av verktygsval.................................. 12
5.2.1 Styrdiagram ....................................................................................... 12
5.2.2 Sambandsdiagram ............................................................................. 14
5.2.3 Fördelning av tidsdifferenser för avgångstid .................................... 16
6 Slutsats .............................................................................18
7 Rekommendationer ........................................................19
8 Referenser........................................................................20
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