Joint adjustment

Joint adjustment

IanMacDonald4987
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Joint adjustment

IanMacDonald4987
Contributor
Contributor

I'm new to Fusion360, but have used Inventor for a number of years.  Here is an assembly that's been giving me a lot of trouble when I try to joint the components together. I started with a new design and inserted completed components into it, choosing one as a grounded part.  

http://a360.co/2gmjLmJ

 

This is a fairly simple piece--a tripod for an underwater camera system, but the three legs need to join angled planes on the upper and lower cross-plate mounting surfaces.  By aligning various planes, I can verify that the pieces should fit with pretty close tolerances.  However, when I try to use joint origins to attach the surfaces precisely, the little origin emblems appear in the proper places, but the 2nd origins are out of rotational alignment with the 1st origins.  I thought the point of the joint method was to eliminate the step-by-step alignment process.

 

Angled surfaces are a problem in Inventor, but I've spent way more time trying to make this work in Fusion than I would have done in Inventor.  Need a tutorial that goes into more detail than anything I've been able to find.  All the tutorials are pretty superficial--here's a flat surface that attaches to another flat surface.  Wish things were that easy, but they aint.

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innovatenate
Autodesk Support
Autodesk Support

 

Hi there! 

 

If found the below discussion about Joints in Fusion 360 really helpful and wanted to share it. 

http://forums.autodesk.com/t5/design-validate-document/let-s-talk-about-joints/td-p/5493427

 

 

From the screencast, the thing I think that may be missing is using the geometry selection "lock." Whenever you move your cursor over geometry while creating Joints, each face or edge will highlight and the white "nodes" called implicit joint origins will appear. At this point you can use the CTRL key or the Command key to "lock" that geometry selection. This will allow you to then select the implicit joint origin of your choice. 

 

I made a screencast below showing a quick way to assemble this assembly. I hope it will help. I note that I used cylindrical joints in this case to keep the translation degree of freedom open on the legs. I didn't do too much testing, but this was my first go at it.

 

 

 

 
I hope it helps. If you have any questions, please let me know!
 
Thanks,
 
 



Nathan Chandler
Principal Specialist
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