Results 1 to 2 of 2

Thread: Datum use on round part

  1. #1
    Associate Engineer
    Join Date
    Feb 2018
    Posts
    1

    Datum use on round part

    Need some help with this. I’m not sure how to interpret and calculate the positions of the outer 8x holes and the outer diameter in reference to the center hole when using the datum callout on this drawing. Any help with this is much appreciated!
    Attached Images Attached Images

  2. #2
    Technical Fellow Kelly_Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
    Posts
    2,625
    Quote Originally Posted by Frankenjesse View Post
    I’m not sure how to interpret and calculate the positions of the outer 8x holes and the outer diameter in reference to the center hole when using the datum callout on this drawing. Any help with this is much appreciated!
    Datum "A" is the origin of measurement, each of the 8 hole features axis must fall within a cylindrical tolerance boundary of .002 diameter offset from the Datum A origin Dia .0374/2 or a radius offset of 0.0187.

    Each hole is radially offset an equal distance of 360 deg / 45 deg..
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •