How to create proper joint for sliding parts?

[mnoreke]

Hello,

I am working on creating a joint that has a fixed base, a few supports that have both fixed and sliding joints at the same point. The problem is, I don't know what to call it in Fusion 360 terms (or tech terms either for that matter).

My design is as follows. All directions based upon Fusions naming.

• The base is fixed with bushings for the uprights to rotate around. I have this working.
• The vertical upright to the left of the model should intersect with the angled upright and lock it in place. I don't have the screw (adjustment handle) for this yet in place.
• The angled upright has a slot for the screw to go through the vertical on one side, the two angled upper uprights, then the vertical on the other side.
• This will create a structure that allows setting both height and angle of support.

Any tips on next steps would be greatly appreciated. I know what I want to do, I just don't know how. 🙂

Thanks in advance,

Martin

Project Link: https://a360.co/2yFZT7t

[davebYYPCU · Accepted solution]

Under the Assemble Tab, you will find and need, Rigid Group, Joints, and As built Joints.

All your parts should be Components, that done, 

Ground the base, (right click on the Component in the browser, select Ground)

the two vertical bars on the left need to be a Rigid Group, so if one moves the other goes too.

the base of one vertical bar needs an As built Revolute Joint.

the two sections of the adjusting brace needs an As Built Slider Joint.

make a Revolve Joint, selecting the hole centres, for the location, and alignment, pick the top part of the brace, then the front vertical bar.  

Fusion will Animate just the parts being joined, select Ok to accept the Joint.

You don't need pins and screws to make this work 

Click and drag the adjusting brace top part, all should work as expected.

Setting Joint limits to restrict the adjusting Slider Joint will prevent the Model breaking apart.

Might help.....

[mnoreke · Accepted solution]

Thanks Dave for the help.

I got it mostly working, with a few additional points of information. Here they are for anyone else who finds this thread later.

Grounding: You must ground an actual component with a body, not a group of components that doesn't have a body.

Motion: Without setting up contact (Assemble => Enable All Contact) joints will slide beyond endpoints unless endpoints are specifically defined.

As Built Joint: These joints are used when pieces are already in the right spot. I found it easier to draw items away from their final spot and move them in using a normal join. This may not be a best practice though. 🙂

Joint Origin: A super useful tool for positioning a joint in mid-air.

Hope this helps someone in the future. 🙂

Martin