Drawing Break Moves when Assembly Changes

[ryanl7Q37Q]

Hi all,

I have an assembly made using the Frame Generator feature. Within that assembly file I have created some view representations. These view representations are used to create a drawing package. I added breaks to some of these drawing views to fit them on the page.

The problem I am having is that whenever the parts within a view representation move within the assembly (I am changing other part lengths and am not modifying any of the actual parts within the view representation), the center location and length of the drawing view break changes such that important information is cut out and/or the drawing no longer sits entirely on the sheet. Is there any way to avoid needing to fix every drawing sheet every time the assembly is edited? Does anyone know if this is an issue outside of frame generator assemblies? This problem even happens when I just move an un-grounded assembly relative to the origin point without editing any parts.

I am not using the custom position representation feature, only the basic top/front/right views in the drawing package.

I have tried using the lock feature on the view representations but that does not appear to help this issue.

I am currently running 2022.1.

Thanks,

Ryan

[Gabriel_Watson]

Have you tried setting the View Justification to Fixed? Edit View and set it as below, and you will need to uncheck "Align to Base" in case it is not a Base view:

"For example, if geometry modifications extend the model to the right, the centered view will adjust in all directions to keep the view centered around it's original position. A Fixed view will update by increasing size in the direction of the geometry modification."
https://help.autodesk.com/view/INVNTOR/2022/ENU/?guid=GUID-69BAAC7A-A8EB-48FE-9E57-6F6E2D56FED6

[ryanl7Q37Q]

@Gabriel_Watson Thanks for the advice. I tried it out and changing the view justification helped to keep the drawing view's actual center from moving on the sheet, but unfortunately the breaks keep shifting on the drawing view.

[johnsonshiue]

Hi Ryan,

This could be a limitation. If possible, please share an example that exhibits the behavior. I would like to understand why Break View keeps shifting.

Many thanks!

[ryanl7Q37Q]

Hello,

I have created a simplified assembly that exhibits the same behavior.

The highlighted part is the grounded part, and the top piece is constrained to its top. I made a view representation consisting of just the top part and made the following drawing from that view representation with the view breaks shown in red.

Now when I change the extrude length of the bottom part from 10" to 30":

The drawing changes to this:

I have attached the files here as well.

[rhasell]

Hi

This is normal operation for Inventor, I don't think its an issue, as Inventor cannot maintain your design intent all the time.

You will just have to drag the break back into the correct location, sometimes this can be very difficult, and occasionally quicker to redo the breaks.

There is no way that I know of, on how to constrain the break line, this would be great, perhaps something for future versions.

I personally create sketches in my views to indicate the break points. (My reasons are different  though, I have to attach tube end symbols to the break points, and I can't anchor the block to the line end, so I have to make a sketch, and anchor the block to the sketch, I make small lines of 0.01mm long)

[Gabriel_Watson · Accepted solution]

You could explore some iLogic automation to grab the longest edge and then create breaks at certain points, but again that depend on how often this automation get used to pay itself off... and how good you and your team (or a consultant) are in developing the code without too much effort:
https://forums.autodesk.com/t5/inventor-ilogic-and-vb-net-forum/control-break-size-in-drawing-view-u...
https://forums.autodesk.com/t5/inventor-ilogic-and-vb-net-forum/how-to-set-start-and-end-points-to-a...

[johnsonshiue · Accepted solution]

Hi Ryan,

Many thanks for sharing the files! It helps me understand the issue better. As Reg and Gabriel already mentioned, this is a limitation. The break view and crop view are more like a way of manipulating the view port, as opposed to cutting the actual geometry. As a result, the break lines are not associated to geometry at all.

Thanks again!

[ryanl7Q37Q]

We are in the process of developing a lot of automated processes, and we do have a program made that breaks a drawing as necessary to fit it to the sheet. I'm less concerned about the time it takes, and more concerned that users won't remember to check for changes in ALL drawings when they only edit one part. Maybe I can tie the program in with an event trigger...