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How Does Lean Compare with Six Sigma and TOC?

Six Sigma – iSixSigma Forums General Forums Methodology How Does Lean Compare with Six Sigma and TOC?

Viewing 18 posts - 1 through 18 (of 18 total)
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  • #55643

    Sam
    Participant

    How do we compare lean with six sigma and theory of constraints in terms of quality and continuous improvement?

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    #200892

    MBBinWI
    Participant

    @sk11243 – very favorably.

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    #200895

    Katie Barry
    Keymaster

    @sk11243 It appears that you did not search the site before posting your question. I suggest you start there.

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    #200902

    MBBinWI
    Participant

    @sk11243 n- maybe weigh them?

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    #200907

    Chris Seider
    Participant

    TOC isn’t considered a quality improvement technique typically BUT sometimes it’s analysis finds quality issues are a constraint.

    Lean and Six Sigma work well together for quality and CI (continuous improvement).

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    #200911

    Nathan flowers
    Participant

    That was a good one, actually many process change techniques seem to strife with each other or possibly make light of the commitment of different strategies. This montage of devices and methods of insight makes the dream of clashing methodologies.

    Six Sigma guarantees that concentrating on diminished of variety will take care of process and business issues. By utilizing an arrangement of factual apparatuses to comprehend the vacillation of a procedure, administration can start to anticipate the normal result of that procedure. On the off chance that the result is not agreeable, related apparatuses can be utilized to additionally comprehend the components impacting that procedure.

    Theory of constraints concentrates on framework change. A framework is characterized as a progression of associated procedures. A similarity for a framework is the chain: a gathering of reliant connections cooperating toward the general objective. The requirement is a powerless connection.

    Incline deduction is here and there called incline fabricating, the Toyota generation framework or different names. Incline concentrates on the expulsion of waste, which is characterized as anything not important to deliver the item or administration.

    Qualitative and quantitative research are two different areas, How to balance and combine qualitative and quantitative research? Help me on this?

    Utilizing a mix of qualitative and quantitative information can enhance an assessment by guaranteeing that the restrictions of one sort of information are adjusted by the qualities of another. This will guarantee that understanding is enhanced by incorporating distinctive methods for knowing. Most assessments will gather both quantitative information and subjective information, in any case it is vital to arrange ahead of time how these will be joined.

    There are circumstances where one can plainly distinguish whether quantitative or subjective strategies are required. For instance, quantitative apparatuses would positively be required in the event that you are attempting to evaluate a specific issue or see how predominant it is by anticipating results to a bigger populace.

    Then again, subjective instruments are required in an exploratory period of research when you are not exactly beyond any doubt what is required or how to approach the issue.

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    #200914

    MBBinWI
    Participant

    @cseider – of course TOC is a quality improvement technique. If you don’t know where the constraint is, other improvements will be for naught.

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    #200955

    Chris Seider
    Participant

    We disagree but I’m sure it’s by semantics @MBBinWI

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    #245725

    stephanieareid
    Participant

    Lean (the Toyota way) is the best holistic approach to running a successful business because it provides the basis for educating your most valuable resource, your employees who do the work to provide the right quality products/services to the right customer, at the right time while on a continuous pursuit to eradicate waste. Meanwhile Six sigma is more so used as a tool and isnt applied as a business management system the way Lean is. However TOC ideology came after the creation of Lean.

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    #245748

    MBBinWI
    Participant

    @stephanieareid – you really are a one-trick-pony, aren’t you?

    Each methodology has its utility and none are the be-all and end-all.

    For others reading this (old) thread, here is some nugget of learning I have managed to dig up over the years.Β  Different problems require different approaches.Β  Lean, as our friend stephanie seems so very fond of, is good for focusing on elements of a system that are inefficient or causing waste.Β  Six sigma (the DMAIC kind), which Stephanie seems to like to disparage, is very good at attacking one form of waste – defects or mistakes.Β  One of the failings of Lean and Six Sigma is that they don’t inherently point you to the best place to apply limited resources.

    Now, if you had unlimited resources, you have no problem.Β  Just use the tools and people liberally to attack everything.Β  Since that isn’t the reality for most organizations, you need to prioritize what to deal with first.Β  This is where TOC comes in very handy.Β  You see, not all process improvements actually provide improvement that the organization needs to realize benefits.Β  Yes, you can SMED the heck out of the operation, but if you didn’t SMED the process that is your bottle-neck, you are unlikely to realize much in the way of actual savings (and will have pissed many people off in doing a bunch of work that doesn’t really seem to make any important impact).

    And, @cseider, I would propose to you that Drum-Buffer-Rope is a process improvement method – it is the one that aligns the cadence of the operation and helps to identify when problems arise that need attention.

    But that’s just my humble opinion.

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    #245786

    stephanieareid
    Participant

    @MBBinWI from what you stated your experiences seem limited especially when it comes to Lean. I know for a fact it is the best management system to run a company because it encompasses a holistic approach for guaranteed success which six sigma does not do. Toyota and other truly Lean companies can attest to that and you and other naysayers do not have to take my word for it, the proof is all there.

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    #245788

    Andrew Parr
    Participant

    @MBBinWI seems @stephanieareid is suggesting all your experience just got up and left my friend!

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    #245803

    Mike Carnell
    Participant

    @stephanieareid I have not been on this site in a while and just rolled through a couple questions earlier today. I saw your response to MBBinWI. I am not sure how you got to the point that you felt in your obviously narrow view of the world that you could make such an arrogant and condescending remark to MBBinWI. First he has spent a lot of time over the years on this site helping a lot of people and he does that on his own time with no charge. I have worked with him in real life and will guarantee he is one of the best Mechanical Engineers in the business. He graduated from one of the toughest most respected universities in the country. Actually it is recognized and respected globally.

    You took a completely inane position but rather than explain in any rational terms why you thought what you thought, you instead chose to make a childish remark about his experience. That makes you appear foolish. I am not the only person on this site with first hand knowledge of his capabilities.

    Now you have taken a position that only Lean can do certain things. Nonsense. You cannot run a business on Lean alone. Period. That is a simple fact of life. Try working your way out of an IRS audit with Lean. Try running a business without accounting.

    You cannot even de-bottleneck a line every time with just lean. @cseider and I worked an operation in Africa that no amount of 5S’ing, standardized work, etc would have fixed the process. It was a set of data and a very long time developing a Regression model. So you can rearrange the chairs on the deck of the Titanic and think you have the world figured out. People like MBBinWI will sit back and let karma deal with you.

    Just my opinion.

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    #245804

    Mike Carnell
    Participant

    I have watched over the years as people claim to be purists and all other kinds of nonsense. The first time I ran into it was a automotive OEM explained to me they where a Taguchi company. Had no idea what that meant until I figured out they only listened to Taguchi design experiments.

    Over the years we have has the TQM’ers who have always claimed they were here first as if that made any difference, Lean people who think they are doing TPS but they aren’t, Six Sigma people who think everybody else are just waving their arms around, etc. It is esoteric bigotry and just as any other form of bigotry it is born in ignorance.

    I have attached a video clip of the movie Tin Cup. Since the first day I saw this it reminded me of the purists. In the movie They break all the clubs except the 7 iron. He pars out with a 7 iron. Basically it is a great metaphor. You can figure out how to make a club (tool) work for even things that it wasn’t actually meant for or you can use the right club for the right job.

    None of this is really complicated. You can let your attitude make it more difficult or you can realize nobody cares how you fix things. They pay for results.

     

     

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    #245813

    MBBinWI
    Participant

    @Andy-Parr, @Mike-Carnell – good to see you both are still here.Β  Funny how some people latch on to something and their perspective totally vanishes.Β  Oh, well.Β  I tried.Β  Must be getting soft in my old age – I didn’t even look to take out the flame-thrower.Β  Best to you both.

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    #245835

    Mike Carnell
    Participant

    @MBBinWI @Andy-Parr Still here. It was very odd bumping into the post. I had been in China and was just getting my email and thing sorted out.

    It is hard to believe you are getting soft. You would have been the last one I would have ever thought would do that. It doesn’t look like this person is really anyone to concern yourself with.

    Happy New Year. All the best in 2020.

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    #245844

    Andrew Parr
    Participant

    @Mike-CarnellΒ  @MBBinWI .Β  I was thinking of forming a new all encompassing accreditation organisation I am calling the “Association of Pragmatic, Enthusiastic, Sociable, Highly Intelligent Teamsters Improvement Organisation” or APESHIT Improvement Organisation for short.

    I think $100 a year subscription should be good.Β  Would you guys promote this for a 50/50 split on subscriptions after expenses? I’m sure there are plenty of gullible souls eager to join and we could create a hierarchy of accreditations for an additional sum.

    Just my opinion!

     

     

     

     

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    #245863

    MBBinWI
    Participant

    @Andy-Parr – Heck, I’d PAY to have that certification myselfΒ  ;-}

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