Dismiss Notice
You must be a registered member in order to post messages and view/download attached files in this forum.
Click here to register.

relation between process capability index and tolerance

Discussion in 'Capability - Process, Machine, Gage …' started by kedar, Apr 3, 2016.

  1. kedar

    kedar Member

    Joined:
    Jul 31, 2015
    Messages:
    11
    Likes Received:
    1
    Trophy Points:
    2
    Location:
    Karad
    dear freinds

    i want to know about relation between "relation between process capability index and tolerance".

    what i mean to say is PC index=1, if we use 100% tolerance.

    kedar
     
  2. Bev D

    Bev D Moderator Staff Member

    Joined:
    Jul 30, 2015
    Messages:
    497
    Likes Received:
    540
    Trophy Points:
    92
    Location:
    Maine
    If I am understanding you correctly, the Cp index will be 1 if the process spread of mean + 3SD = tolerance range (upper spec - lower spec)
    the Cpk index takes into account the actual location of the process average...the relationship is contained in the formulas
     
  3. kedar

    kedar Member

    Joined:
    Jul 31, 2015
    Messages:
    11
    Likes Received:
    1
    Trophy Points:
    2
    Location:
    Karad
    Yes, You are right.Please help
     
  4. Miner

    Miner Moderator Staff Member

    Joined:
    Jul 30, 2015
    Messages:
    437
    Likes Received:
    333
    Trophy Points:
    62
    Location:
    Greater Milwaukee USA
    What help do you need beyond Bev's explanation?
     
    Bev D likes this.

Share This Page