×
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

Perpendicularity

Perpendicularity

Perpendicularity

(OP)
Hi there,

I have a drum that needs both faces of it perpendicular to the bore of the drum. I am wondering what the correct location of the feature control frame is so that both faces will have the tolerance. I am only assuming that putting the feature control frame pointing to one face means the other may not be be perpendicular too.

Would the newer "All around symbol" work for this?

Much appreciated.

RE: Perpendicularity

Just use two control frames, one for each end. Eliminates guessing.

All around refers to a continuous border and is used with the profile control.

RE: Perpendicularity

No to both of your direct questions. Assuming that the function of the part makes the bore the "driving" feature, then the diameter of the bore would be labeled as the datum feature (letter A or whatever) and then each face should have its own perpendicularity to datum A.
The size tolerance across the faces will keep them parallel to one another. If possible, you might want to post a sketch if you implement this idea and we'll all go from there :)

John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems

RE: Perpendicularity

(OP)
Thanks guys. The diameter will be the datum and I will put 2 control frames on the drawing, 1 for each face. Thanks for the quick responses!

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