Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

dimensioning to mid limit

Status
Not open for further replies.

knobhead

Aerospace
Joined
Mar 6, 2001
Messages
184
Location
GB
I'm sure there is a way of doing this, but I can't work it out.

Our manufacturing guys want all our models done to mid-limit sizes, so that they can drop the models directly into their CAM software without any edits. Historically, we've always dimensioned tolerances in our parts in a +0.2/-0.0 kind of way, and modelled to the -0.0 if you see what I mean.

The manufacturing guys want us to model to midlimit.

Now, assuming we model to midlimit, how can we tell Inventor to dimention to +0.2/-0.0?

For example, I have a diameter 10.1mm nominal, and my model is at that size. On the idw drawing that goes to the shop, I want to dimension it 10.0 +0.2/-0.0

Inventor sees that size as 10.1 and so dimensions it 10.1 +0.2/-0.0, which is obviously wrong. How do I get it to realise the model sizes are mid-limit?

Using Inventor 10 btw.


Excessive accuaracy is a sign of poor breeding. -Socrates.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top