Inventor General

Posts: 23
Registered: ‎04-30-2009
Message 1 of 3 (199 Views)
Accepted Solution

Assembly Constraints Snowballing Errors

199 Views, 2 Replies
11-16-2011 01:48 PM

I have a bunch of assemblies that are acting this way and I am not sure why.


I ahve built the parts and built the sub-assemblies with-out errors, once everything looks good I place the subassemblies into my top level assembly.


Everything still looks good with no errors.

I do a rebuild of the top level assembly and find 20 or so errors.

Most of the errors are bogus and editing the constraint with-out changing anything removes the errors, typicaly.


On a bunch of the sub-assemblies the error showed up in the top level assembly, so I edit the part only to find the constraint is relevant but with errors so I suppress it to remove the error. Save and go back to the top level assembly only to find there is another constraint error in the same assembly that I suppresed the constraint to remove the error. This goes back and forth between top level and sub-assembly till all constraints are suppresed or deleted for the sub-assembly. Then the same thing happens to another sub-assembly.


This is driving me crazy, the only solution that I have found is to delete all constraints and rebuild each sub-assembly with the same constraints that were initialy used.


How do I stop this snowball effect???????????????????


Posts: 1,901
Registered: ‎04-30-2008
Message 2 of 3 (192 Views)

Re: Assembly Constraints Snowballing Errors

11-16-2011 03:03 PM in reply to: DSNR

Hi! Could you send me the files so I can take a look?




Johnson Shiue (
Principal SQA Engineer, Inventor
Mechanical Design
Autodesk, Inc.

Posts: 23
Registered: ‎04-30-2009
Message 3 of 3 (173 Views)

Re: Assembly Constraints Snowballing Errors

11-17-2011 06:07 AM in reply to: johnsonshiue

I think I have it figured out...


For some reason I deleted a assembly constraint, re-constrained it in the exact same way and all the other constraint errors disappeared. Not sure why or how but it worked.


Thanks anyway, much appriciated!!!


You are not logged in.

Log into access your profile, ask and answer questions, share ideas and more. Haven't signed up yet? Register

Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.

Need installation help?

Start with some of our most frequented solutions to get help installing your software.

Ask the Community

Inventor Exchange Apps

Created by the community for the community, Autodesk Exchange Apps for Autodesk Inventor helps you achieve greater speed, accuracy, and automation from concept to manufacturing.

Connect with Inventor