×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

position tolerance, need help

position tolerance, need help

position tolerance, need help

(OP)
this is an old drawing.
position tolerance without datum callout.
say several rows and columns of holes. have all basic dimensions from one hole. this is an easy part.
now, there is an odd hole located not inline with any. it has x, y two basic dimensions from SOME hole(s). my question is, the position tolerance is from the one hole which all the holes are reference to, OR that SOME hole's actual position?
thanks.

RE: position tolerance, need help

I cannot see any picture. Am I the only one?

RE: position tolerance, need help

Typically all these holes will be considered to have a single reference frame - no holes are measured relative to any other hole. It's like layout lines that are made before any holes are drilled - the tolerance controls how far from each intersection the related hole is drilled.

This doesn't seem to locate where on the part the group of holes is made.

To do otherwise the location tolerance would have a datum call out for the basis hole and the basis hole would be identified as a datum.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources