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Beam is becoming skewed/distorted in assembly

10 REPLIES 10
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Message 1 of 11
ACcanopy
1482 Views, 10 Replies

Beam is becoming skewed/distorted in assembly

Hi I'm Alex and I am new to Inventor. We just switched to Invetor From CAD and have been learning as i go mostly. I have been experiencing problems that are leading to major setbacks due to requireing me to redraw multiple items.  With my job we have to use wide flange beams and square columns etc... I'm able to draw the indidviual parts and at times have no problem with anything being offset, crooked, skewed or anything. But I find that I'm duing something in the assembly process that is causiing my parts to become skewed/distorted in the assembly and thus also on my view layouts for prints. 

 

If anybody can help me with this problem i would greatly appreciate it!!!

 

Thanks again guys.

 

 

Alex

10 REPLIES 10
Message 2 of 11
JDMather
in reply to: ACcanopy

Your first part in an assembly should be grounded.

If you unground it and move it around your views will become skewed.

This can be fixed, but let's see what you really have.

Attach your files here.


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Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional


The CADWhisperer YouTube Channel


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Message 3 of 11
ACcanopy
in reply to: JDMather

Thanks for the response. I would love to attatch a file but we have an elevated confidentiallity contract and i cannot post any business work on here. Believe me i wanted to be able to show exactly what is happening but instead have to talk my way through it.  When you say ground it what do you mean and how do you do that?

Message 4 of 11
kstate92
in reply to: ACcanopy

Constrain the part to the pricipal work planes, axes, and origin point in the assembly file until it has zero degrees of freedom (can't move it by dragging).  When you start with a blank iam file and insert a part, the first part is (always?) automatically constrained.  You then constrain the subsequently inserted parts to the first part (or the assembly origins if you wish).

KState92
Inventor Professional 2020
AutoCAD Mechanical 2022.0.1
Windows 10 Pro 64 bit - 1903
Core i7-8700 32 GB Ram
Quadro P2000
Message 5 of 11
mcgyvr
in reply to: kstate92


@kstate92 wrote:

 the first part is (always?) automatically constrained.


always automatically grounded.. (not constrained)

 



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Inventor 2023 - Dell Precision 5570

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Message 6 of 11
JohnK_TEDCF
in reply to: ACcanopy

Since your just starting out with Inventor, you might want to check out these free tutorials:

 

http://www.youtube.com/user/TEDCFPublishing?feature=mhee

 

I think they might help you out!  If you have any questions about training for Inventor, feel free to contact me.

 

John Koop
Software Engineer/ Inventor Specialist
TEDCF Publishing
www.trainingtutorial.com
Message 7 of 11
JDMather
in reply to: ACcanopy


@ACcanopy wrote:

 I would love to attatch a file but we have an elevated confidentiallity contract and i cannot post any business work on here. Believe me i wanted to be able to show exactly what is happening.....


 

Do you have a home computer?

Can you download a 30-day trial and make something up that exhibits the same behavior that you are seeing in your proprietary work.  It is much easier to communicate with actual geometry files.

 


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Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional


The CADWhisperer YouTube Channel


EESignature

Message 8 of 11
7997redtail
in reply to: JDMather

A couple of points.

 

I am a school teacher and this is the first year we have had this "crooked" views problem.  We, meaning the kids and I have two solutions of which the second is by far the best.

 

Before I get to the solution I would like to point out that the first part put into an assembly is not always grounded.  Or, in our case, its never grounded.  Anyone know why not?  All other years it has been so i think maybe the installers have changed something.

 

As for the solution, the one above, constraining to planes, works well but not always.  If the planes show up in "red" when you go to select them it will work.  If they show up in "White" you won't be able to select them.  We have not been able to figure out why they are white sometimes and red others.  Anyone know why?

 

The best solution is to;

 

While in the assembly view

    select the "view" tab

    Go to the "navigate" section on the far right

    Choose the "look at" option

    Select the face of your object you want to be the front.

        The object will rotate into a square view facing you

 

    Right Click the view cube

    Choose the option to set the current view as front view

 

Go back to your drawing and the view will be correct and straight.

 

Hope this helps.

 

Message 9 of 11
blair
in reply to: 7997redtail

ADSK added the ability upon placement of the first part by RMB when placing the part brings up a dialogue box that allows you to rotate the part about a number of axis as well as the option to Ground at Origin. You can over-ride this within the Tools>Application Options>Assembly>Place and Ground first part at Origin.

Inventor 2020, In-Cad, Simulation Mechanical

Just insert the picture rather than attaching it as a file
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Message 10 of 11
kstate92
in reply to: blair

Maybe it's just me, but I swear both this option (Ground at Origin) and Do Not Edit Placed Dimensions in idws occasionally become unchecked on startup, even without an iPoof (crash) having happened.

KState92
Inventor Professional 2020
AutoCAD Mechanical 2022.0.1
Windows 10 Pro 64 bit - 1903
Core i7-8700 32 GB Ram
Quadro P2000
Message 11 of 11
mcgyvr
in reply to: kstate92


@kstate92 wrote:

Maybe it's just me, but I swear both this option (Ground at Origin) and Do Not Edit Placed Dimensions in idws occasionally become unchecked on startup, even without an iPoof (crash) having happened.


Not just you.. I've seen it too in 2015.. Maybe 2 or 3 times so far



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Inventor 2023 - Dell Precision 5570

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