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Six Sigma Capable

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  • #45555

    JB
    Participant

    If your 6 sigma limits are below you USL and below your LSL is your process 6 sigma capable.
    New at this.

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    #149141

    BB
    Participant

    hi JB,
    U r close enough!…” If u’r 6 sigma limits are below USL & above LSL then process is capable or defect free (in simple words)”  but most importantly if u’r 6 sigma limits = 50% of u’r tolerance limits then u’r process is 6sigma capable.
    …easy isn’t it!
    bye
     
     

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    #149171

    Mikel
    Member

    u’r wrong.
    If + or – 6 is above or below specs respectively, you are not 6 sigma capable.
    Also try communicating like an adult instead of a text messaging kid.

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    #149258

    BB
    Participant

    stan baby…
    i’m sure u’v made it very clear (as an adult) for someone who is “NEW” at this!!!
    man… u’r so matured…!!!
    OK…I shall make it even more simple…just for u:
    ” If u’r estimated part to part variation, estimated @ 99.73% Confidence Level viz. nothing but u’r 6sigma lies within u’r customer or process specific tolerance i.e. Specification Limits i.e below the USL or above LSL (basically within the boundary) and also if u’r 6 sigma = 50% of the Tolerance, then u can treat me b’cos u’r process has achieved 6sigma!!”
    textless formula…again just for u:
    6sigma = 50% (USL-LSL)
    sigma = R-bar/d2
    R-bar= Average of ranges collected over 24 time blocks with 3 or 5 readings in every timeblock
    d2= constant (depends on sample size = 3, 5 etc /time block)
    Zusl = (USL – overall avg) / 3sigma
    Zlsl = (overall avg – LSL)/3 sigma
    Cpk = (Zusl/3, Zlsl/3)
    simple isn’t it….?!! 
     

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    #149260

    Martínez
    Participant

    u r both rong
    if yr proces is out of control its not capable of anythng.

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    #151707

    jagdish
    Participant

    I thought ZLSL= (Average – LSL)/std. deviation i.e. sigma.
     
    Is it
    (average – LSL)/3sigma  ?
    I was searching for formula to confirm.
    Thanks,

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