×
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

Determining "not" interferance

Determining "not" interferance

Determining "not" interferance

(OP)
We understand the concept and usefulness of finding interferences in assemblies.

To take that in another direction; how would one find out if there is "not" interference; specifically between holes or voids.

For instance, in mold design it is necessary to make sure water lines,  ejector pin holes, fastener holes and part cavities do not interfere.....or, in other words break into each other.

Is there a way to do this without resorting to scrutinizing each and every section in question in the completed mold assembly?
Very often this has to be done in multiple directions and can be very time-consuming.

Thanks

RE: Determining "not" interferance

I think if there is no interference, then you are good.
You need to know the tolerances.

Chris
SolidWorks/PDMWorks 08 3.1
AutoCAD 08; CATIA V5
ctopher's home (updated Aug 5, 2008)
ctopher's blog
SolidWorks Legion

RE: Determining "not" interferance

Have you tried using the cavity / subtract functionality to make your negative spaces into positive ones.  I tried this on a simple test part and am not sure it is less painful than what you are currently doing, but here is what I did:
  1. Make a new part and insert the current part as the first feature.
  2. Create plugs to close in all of the holes / cavities (make all negative spaces into voids).
  3. Make yet another part that is a block large enough to hold the plugged part.
  4. Insert the plugged part into the new part so that it is entirely within the new part.
  5. Combine the two solid bodies, subtracting the plugged part from the block.  This should result in several solid bodies.
  6. Hide the outside body and you should be able to see all of the previously negative spaces as positive ones.  If the negative spaces have intersected their positive representations will be part of the same solid body.
Eric

RE: Determining "not" interferance

After hitting post, I decided that you could do away with the last part file and just create the enclosing block as an extrude in the plug part by clearing the merge result checkbox.

Eric

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