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sixsigmajust in time

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  • #45868

    faten
    Participant

    how would the six sigma enhance the just in time process ??

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    #150740

    Charles H.
    Participant

    One key area is by removing issues associated with the “hidden factory.”

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    #150745

    Ron
    Member

    Good question.  JIT is a pillar of Toyota Production System and is comprised of some key topics such as one piece flow, pull via things like kanban, and other things like carefully controlled supermarkets.  Additionally, there are many other considerations such as smoothing production (heijunka) that need addressed.  It is a big elephant and you cannot focus on just an ear or trunk.
    With this said, I see Six Sigma complementing JIT by helping to create capable processes (a prerequisite of TPS) by reducing variation and defects.  One piece flow is a disaster waiting to happen when you have defects out the wazzoo and incapable processes.  It just wont work.
    So contrary to popular belief Lean and Six Sigma can and should work hand in hand. 
    I started a new blog this week to help promote this very idea: http://www.leansixsigmaacademy.blogspot.com. 

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    #150747

    jtomac01
    Participant

    JIT has its basics in leveling or smoothing the input demand.  One way to use Six Sigma is to scope a BB project around leveling or smoothing a demand stream, so JIT works correctly. 

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    #150764

    LsS
    Participant

    Ron,
    If you need a quote from 1950 by Deming, look at the foreword of the anniversary edition of Shewart’s 1931 Quality Control book. Deming explicitly uses the term waste in the context of his 1.5 page summary of quality. To me the more interesting question is how the concepts of waste and quality could be separated to a degree that we are now having to piece it together again.

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    #150768

    BB
    Participant

    It wouldn’t.
    Six sigma has enough nonsense of it’s own without adding to it.

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