By Jennifer MacMillan
Thanks to those of you that attended my WebCast on Aug 30th. We have now posted the recording and you can view it on our YouTube channel by clicking HERE. Enjoy!
The following were questions that I didn’t get to on the call. I hope that these answers help explain this tool a little further.
Question (Harold): Is it possible to show dimension values in the model browser? Or just 1-2-3-4-5 etc.
Answer: All annotations are listed in the Annotations folder in sequential order. To help identify a Dimension annotation in the list I would recommend renaming the annotation in the folder to something that helps identify it. You rename the same way as you rename features, double-click (slowly) and enter a new name in the field.
Question (Andrew): How do you document revisions on a MBD part?
Answer: As of right now this is not possible. Hopefully this is something that evolves with the tool. A couple suggestions that Autodesk recommended are:
- Add a General Note with the revision info
- Use the iProperties revision field
- Add an Engineers Notebook entry to document the change
- Use a PDM system to manage revisions
Question (Andrew): Can you assign dimension sets in a 3D model?
Answer: Dimensional Annotations are all individual and cannot reference one another as is done in the drawing environment with Ordinate, Baseline or Chain dimension. They must either be prompted from a sketch (where this dimensioning scheme is not supported) or be created by selecting entities on the geometry.
Question (Andrew): Can the MBD part be published to DWF with dims visible?
Answer: Below is an image of the available Export types. Unfortunately, DWF is not supported.
Question (Andrew): Where do you set the dimension defaults like the dimension styles in drawings?
Answer: This is not something that is documented by Autodesk in Help and there seems to be a lot of behind the scenes control done by the software. All styles are included in the Style and Standard Editors in both the part and drawing environments. If you look in the categories that are used by 3DA’s you will see styles that have 3DA appended to the name. This is what is controlling the standards but what is unclear is how the Active Standard (set in Document Settings) ties to which styles. There also does not seem to be a way to create your own style. Hope that this little bit of information helps. Hopefully this develops in future releases.
Question (John): How do 3D annotations (3DA) relate to model tolerances?
Answer: All of the design data that is created in the 3D part is pulled from the model when annotated. If you had assigned a tolerance value in a sketch and used that sketch dimension (i.e. promoted it) the tolerance comes with it. I meant to highlight this in my demo and it slipped my mind (Sorry.. this is a great question). In the following image, I have turned on the visibility of sketch dimensions and then I promoted the ø40 and ø90 dimensions into 3D Annotations. The ø40 sketch dimension already had a tolerance assigned from when it was sketched and this was also promoted. The ø90 sketch dimension didn’t have a tolerance assigned and it does not have one when promoted. I can edit a 3DA and add a tolerance and if it had been promoted it is assigned back to the sketch.
The same holds for feature dimensions. For example, if a hole dimension is shown and wasn’t initially modeled with a tolerance, once promoted and the 3DA is assigned a tolerance value, that value is assigned back to the feature. One caution.. If you later delete the Dimensional Annotation because you made an error, the tolerance value does not get deleted. It was assigned back to the sketch or feature and stays there.
I further tested and it looks like Tolerance features assign any tolerances back to the part and likewise pickup tolerances from the model. The one annotation that doesn’t seem to do this is the Hole/Thread Note annotation. As I mentioned in the webcast the Hole annotation doesn’t allow for parametric text either. What I might do for hole notes is actually use a Tolerance Feature to assign it and then you can delete the Feature Control Frame and datum identifier.
Question: In the demo you showed promoting from a Sketch, can you promote feature dimensions?
Answer: Yes, both sketch and feature dimensions can be prompted. You must show the dimension to be promoted.
Question: Do the messages in Tolerance Advisor prevent you from outputting an annotated model?
Answer: No, the messages are information only and will not prevent you from outputting a model. That being said, it does offer valuable information on errors that should be reviewed and corrected, if necessary.
Question: Why was the Active Standard pre-set in one of your Demos and not the other?
Answer: All 2018 default templates have the active standard assigned, by default. If the model that you are annotating was created pre-2018 you will need to assign the Active Standard. This can be done in Document Settings or you will be prompted as soon as you create your first Annotation.
I tried to cover a wide range of what the Annotation tools can offer in my WebCast; however, in 60 minutes I certainly couldn’t cover everything. As I mentioned in the WebCast ASCENT has recently released a new learning guide where its sole focus is on Inventor 2018 3D Annotation. If you were interested in continuing your learning it is available on Amazon as well as on our ASCENT eStore (Autodesk Inventor 2018: Working with 3D Annotations & Model-Based Definition).
If you have any feedback, please let me know. Thanks again for attending the WebCast!
Jennifer