Rigid group will not join properly with another component.

[Anonymous]

I have searched and read several messages but have not found a good answer to my question.  I am attempting to join a rigid group with a separate component.  When I do so, only one component in the rigid group actually joins.  When creating the joint, I can only find the joint origins of the individual components in the rigid group and not a joint origin for the rigid group as a whole.  In the following screencast I tried to reduce my issue to the simplest form possible.  I apologize in advance if this is a simple newbie issue.  Any support you can provide will be greatly appreciated. 

[Anonymous]

Sorry, did not properly insert the screencast. Here it is.

[Anonymous]

Joints act on components.  A Rigid Group is not a component. ANY Rigid Joint any includes ANY component of the Rigid Group will effectively lock the joint to the entire Rigid Group.

Regards,

Ray L.

[Anonymous]

So how do I deal with my issue?  How do I get the entire rigid group to move with the component I use to create the joint?

[Anonymous · Accepted solution]

If you've created the Rigid Group and joint properly, it will all move together.

Looking at the screencast, I see two problems.  First, you never created the joint - you cancelled out of the dialog.  So, I'm not sure what your basis is for saying the joint did not work correctly.  Second, once you actually DO create the joint, if you want motion to work correctly SOME component needs to be constrained by grounding, or some other Rigid Joint that actually prevents it from moving.  Otherwise, regardless of any joints, moving any one component will move ALL components, as they're all just hanging in free space, with nothing to prevent them from moving.

Regards,

Ray L.

[Anonymous]

Thank you for your help.  I feel really silly.  When I created the joint and saw just one component of the rigid group move, I assumed that would be the final outcome.  You are correct, once the joint is created, the entire rigid group then does move into the correct position.  This was simply operator misunderstanding and operator error. 

[Benjamin-tech]

Thanks for sharing tlm11110!

Have been stuck on the same problem. Here I was troubleshooting the last couple days; if only I had pressed “OK”.. Thanks for pointing that out! It would be nice if fusion 360 would show ALL the components it's joining/moving but maybe there is a reason its not. 

[jeff_strater]

@Benjamin-tech - you're correct - the reason that Fusion does not animate the entire assembly is for performance reasons.  If you are working with a large assembly, animating the entire assembly can be slow.  So, during the preview phase of the command, Fusion just previews between the immediate selected components.

[Anonymous]

You have rescued me too, thank you for posting your question! I have spent a full hour desperately trying to join a spindle to a pulley - the shaft slides out off the spindle and joins, but all the rest stays where it was. Desperately cancelled each time, and tried this, and that, made a new rigid group dozen of times, and searched in internet, and finally found this page, what a luck!

[Anonymous]

lol me too, I wasted so much time trying to figure this out. It would be good if there was some sort of indication that it was going to behave in this way. Maybe just a dialogue box that appears when you first attempt the operation.

[Anonymous]

Agreed! I'm pretty new to using Fusion, and the way that the preview behaved threw me for a loop for way too long! An adjustment/addition to the text that appears in the dropdown menus about what the selection does would help a lot to clarify this without having to change anything about how the program functions. 

[gordo3di]

Same! I wish the preview showed this... Spent an hour trying to figure it out...

[Anonymous]

Same issue and solved with clicking OK........Thanks for posting this question.

[vincent_cola]

Advice still pretty good 7 years later.