topic Re: First sketch rotates coordinate system. in Inventor Forum

First sketch rotates coordinate system.

YannickEnrico — Thu, 15 Dec 2016 08:41:19 GMT

Hi there!

After updating to Inventor 2017 I've noticed something in the part environment that has changed.

After creating a new part and pressing s to make my first sketch, it rotates the whole environment so "top" on the viewcube is faced towards left, front is faced right, while right is faced up.

I'd like it to stop rotating, or at least rotate correctly to this orientation:

Top = Up

Front = Left

Right = Right

on the isometric viewcube.

Things I tried:
- Changing the default orientation so Z axis is perpendicular to Top

- Disablingand enabling "Look at sketch plane on Sketch Creation and Edit"

Any solutions to this?

Best regards
Yannick Nielsen

Re: First sketch rotates coordinate system.

mdavis22569 — Thu, 15 Dec 2016 11:11:37 GMT

Hi and welcome to the forum ....

quick question ... What are you using for your first sketch plane?

Can you make a quick screencast to show us what you're seeing?

Mike

Re: First sketch rotates coordinate system.

YannickEnrico — Thu, 15 Dec 2016 11:16:11 GMT

This is what I'm seeing. So I have to place my sketch on the vertical plane if I start drawing the bottom.

This is counter intuitive, and I would like for it to be the horizontal plane instead.

As stated above, I tried changing the viewcube ("Current view as...."), and I succeeded in changing the vertical axis to be Z instead of Y - But the whole thing still rotates so the Top "lies down"

Re: First sketch rotates coordinate system.

mdavis22569 — Thu, 15 Dec 2016 11:25:33 GMT

Can you not use a different starting plane ...

However I have a different question ... Why does the top position on the Cube matter on how it's set?

I usually draw the model as needed for exporting ...and just set the top, or the front when I'm done...

Mike

Re: First sketch rotates coordinate system.

stuart_smith82 — Thu, 15 Dec 2016 11:41:00 GMT

Hi,

Just a thought but there are multiple options when aligning to a view in inventors application options.

Can you check your settings and try alternating between the two look at behaviours and see if this helps:

Thanks

Stuart Smith

Group Data Management Consultant Graitec UK

stuart.smith@graitec.co.uk | www.graitec.co.uk

Blog: https://www.graitec.co.uk/blog/blogger/smith

Graitec Manufacturing Blog: https://www.graitec.co.uk/blog/categories/mechanical

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Re: First sketch rotates coordinate system.

YannickEnrico — Thu, 15 Dec 2016 12:16:41 GMT

I can use a different starting plane, but I wanted to work the intuitive way.

I wanted to avoid changing the cube around all the time.

Back in my old company (inventor 2016 and prior) the first sketch didn't behave like that. And a friend of mine who just updated to inventor 2017 doesn't experience it either.

It's more of a QoL thing than a necessity. But it would be nice to figure out.

Re: First sketch rotates coordinate system.

YannickEnrico — Thu, 15 Dec 2016 12:17:41 GMT

Changing those didn't change its behaviour

Re: First sketch rotates coordinate system.

jeanchile — Thu, 15 Dec 2016 15:31:42 GMT

mdavis22569 wrote:

However I have a different question ... Why does the top position on the Cube matter on how it's set?

I usually draw the model as needed for exporting ...and just set the top, or the front when I'm done...

Mike,

I too am frustrated by this and can offer our biggest reason why it matters:

We often interface with other industries and their software (Navisworks, Civil, etc.). I guess since the beginning of AutoCAD years ago it was decided that the XY plane would always be the plane they draw their 2D plans on (with the positive Z axis being in the up direction) and North being "up". When our Inventor based models are loaded into other programs they come in the same way whether we've changed them or not. Meaning if we didn't use IV's XY plane as the ground plane with the Z direction "up" our models have to be "transformed" in some way in the software with rotation and offset dimensions to get lined up. It is a pain in the butt. Even the North arrow in Inventor needs to be left in the default position or the rotation in that axis is off.

Not to mention that if all of my employees don't follow the same protocol, all of our skeletal modeling and constraining techniques fall apart.

I have a 3D mouse with programmable buttons. One of those buttons is set to start the sketch command and then immediately hit the home view command so it rotates back to where it was when I started.

This is another one of those things that Autodesk changed between 2013 and 2015 (we skipped installing 2014) that is annoying and made things more difficult for us but most users like yourself probably wouldn't care about.

Re: First sketch rotates coordinate system.

mcgyvr — Thu, 15 Dec 2016 16:15:35 GMT

Just open the template file.. Set the view cube how you want it and save the template..

Re: First sketch rotates coordinate system.

Curtis_W — Thu, 15 Dec 2016 16:55:45 GMT

Hi yannick,

Concerning the view cube "tipping over" on the initial view creation you might be trying to modify the behavior mentioned in points 5 and 6 of this post:

https://forums.autodesk.com/t5/inventor-forum/viewcube-orientation-on-document-create-application-options/m-p/6599003#M615441

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com

Re: First sketch rotates coordinate system.

YannickEnrico — Fri, 16 Dec 2016 06:57:54 GMT

Opening my template my viewcube sits correctly.

However, creating the first sketch, my viewcube rotates as shown on the picture.

Re: First sketch rotates coordinate system.

YannickEnrico — Fri, 16 Dec 2016 07:06:07 GMT

Hi Curtis

Thanks, but this isn't the issue. I have no problems with the view cube initially.

It rotates to something other than "home" view when I start the 2D sketch command.

Re: First sketch rotates coordinate system.

YannickEnrico — Fri, 16 Dec 2016 07:08:27 GMT

After testing some more, I discovered that it will always rotate so the UCS faces as in the picture attached.

Is there no way to come around that? Because I'd prefer Z to be up rather than Y

Re: First sketch rotates coordinate system.

stuart_smith82 — Fri, 16 Dec 2016 08:03:14 GMT

Hi,

I think there may have been misunderstanding with what you were asking from everyone trying to help you.
When you select new sketch in a empty part the view will always rotate to have Y axis pointing in a positive vertical direction in relation to your screen.
Unfortunately there isn't any way to change this without I assume iLogic or API.
We have customers with similar issue where there products are essentially facilities and must be created with real world orientation and location taken into consideration at all component levels.
Another option is to have templates setup with predefined sketches on places and a description in template to guide user for correct selection when creating components e.g standard XY.ipt, standard XZ.ipt etc.

Thanks
Stuart Smith
Group Data Management Consultant Graitec UK
Blog: https://www.graitec.co.uk/blog/blogger/smith
Graitec Manufacturing Blog: https://www.graitec.co.uk/blog/categories/mechanical

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Re: First sketch rotates coordinate system.

YannickEnrico — Fri, 16 Dec 2016 08:28:16 GMT

Such a shame. It may have come down to template, then, in my old company.

Thanks for coming with that answer. Even if it didn't solve my problem, it made it clear that there currently is nothing to do about it