Concentricity

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • kbotta
    replied
    no prob..

    Leave a comment:


  • Guest's Avatar
    Guest replied
    Thanks for your help kbotta!!!
    Jay

    Leave a comment:


  • kbotta
    replied
    BS7172:1989 recommends 7 to detect up to 6 lobes.
    Personally, I use 9...

    Leave a comment:


  • kbotta
    replied
    If you are referring to ASME Y14.5M-1994 (on your drawing) than you cannot measure concentricity with 2 circles. Pcdmis does not correctly determine the geometric characteristic of concentricity. That would involve measuring 2 opposite pts and constructing a mid point - at every point around the dia (and how many pts are there on your dia???) and making sure the "point cloud" is inside of the tolerance zone specified in the FCF.
    It's one of the worst things (and symmetry) as programmers that we can see on a drawing. Of course, I guess it would be ok if retirement is right around the corner
    kb

    Leave a comment:


  • Guest's Avatar
    Guest started a topic Concentricity

    Concentricity

    1) What would be the most accurate calculation method for defining circles/cylinders for the purpose of determining the concentricity of 2 circles/cylinders??? Would it be Min_Sep ? (Minimum Separation)

    2) Would the number of "hits" used to define a circle/cylinder need to be a prime #? (I have been told this is the case) ?
    Last edited by jayprince; 03-27-2006, 12:09 PM.

Related Topics

Collapse

Working...
X