Results 1 to 3 of 3

Thread: Profile with MMB modifier -question

  1. #1
    Associate Engineer
    Join Date
    Jul 2021
    Posts
    6

    Profile with MMB modifier -question

    Hi everyone. Long time lurker here, I really appreciate all the expertise that is shared. I've learned quite a bit from you all, so I first wanted to say thanks!!

    My question.... I am wondering if there is an advantage to having the MMBs in the attached FCF on datums B & C? Does datum shift help in this instance? I don't see the advantage personally so I am hoping that someone can enlighten me.

    -actual drawing not attached but similar enough to explain the situation
    -ASME Y14.5 2009

    Thanks for any help you can give!
    Jay
    Attached Images Attached Images

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
    Posts
    2,433
    I don't think Datums B or C actually help restrain or oriented that planar surface in any way thus MMB is irrelevant.

    The profile of surface in specifying the location (+ & - ) relative to Datum A and a form (flatness) within the lower frame.
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  3. #3
    Associate Engineer
    Join Date
    Jul 2021
    Posts
    6

    Quote Originally Posted by Kelly Bramble View Post
    I don't think Datums B or C actually help restrain or oriented that planar surface in any way thus MMB is irrelevant.

    The profile of surface in specifying the location (+ & - ) relative to Datum A and a form (flatness) within the lower frame.

    Perfect! Thank you for looking at that for me!

Posting Permissions

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