Garage Roll Up Door

[holden_marshall]

I am struggling to figure out how to show a garage door rolling up and unrolling around a tube in Inventor. Attached is what I need my assembly to do.(616) Roller Shutters rigged animated free 3D model - YouTube. If someone could help me put the righ...

Thanks,

[johnsonshiue]

Hi! I think there are two ways. One is using Transitional constraint but the movement could be unstable. Or, you may try using Dynamic Simulation to have the roller sketch followed the rail path (2D Contact).

Many thanks!

[holden_marshall]

@johnsonshiue How would I get it to wrap around the tube if the rail doesn't go to the tube? There is a 5" gap between the top of the post and the tube, which then wraps around it.

[johnsonshiue]

Hi! You could create surface bodies in the parts. So that the Transitional constraint is between the surfaces. The parts simply move along. Please feel free to share the files here. The forum experts and I can help take a further look.

Many thanks!

[holden_marshall]

 @johnsonshiue Is there any video you could point me to that would allow these pieces to follow a spiral path around the tube. This would truly make design this easier especially for changes to not affect constraints. 

[johnsonshiue]

Hi! Then this motion cannot be emulated in Inventor. Certainly, transitional constraints will not work in this case. I am not 100% sure if Dynamic Simulation can do it either.

Many thanks!

[Anonymous]

Using surface bodies is a good suggestion, IMO. Some of the more intricate stuff I've done that way.

[JDMather]

Environments tab > Dynamic Simulation 

@holden_marshall 

Can you Attach your assembly here?

[holden_marshall]

@JDMather can I privately message you with the assembly so it's not posted on the community page? I don't want to break my company policy.  

[JDMather]

No.

I only communicate in an open forum.

You should be able to create a dummy assembly that exhibits the same behavior as your proprietary assembly.

The phrasing of my question, "Can you Attach your assembly here?", is first of all do you understand what an assembly is?  (Must include parts.  If I recall correctly you have started this discussion several times and in a prior discussion thread posted an assembly file without any part files.)

Edit: I should point out that achieving the motion that you want is not a beginner endeavor.

It probably takes a couple of years to master Dynamic Simulation.

I would suggest that you purchase the Wasim Younis book and then I have some tutorials for practice.

[Anonymous]

That motion may potentially be very difficult. Any of the stuff that hasn't got any readily available tutorials falls into that category IMO. That is to say, effectiveness is key, never mind efficiency. With that, I can see a motion that entails files/ part coordinate system flipping over the 180-degree mark. This is a strong indicator that the movement is going to be hampered by different solutions. I have actually overcome this problem by coding the movement in 1-degree steps, with handmade charts. That eliminates the assembly constraints. This garage door is very, very difficult in Inventor, and I applaud the Blender people for creating the movement. Meshes yes, nurbs, very difficult.