How to joint to follow slotted curve partway on rod

How to joint to follow slotted curve partway on rod

barkster
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Message 1 of 13

How to joint to follow slotted curve partway on rod

barkster
Enthusiast
Enthusiast

I've seen how to do a slot joint when the planes match up but I want to do a slot joint a few inches back on a pin.  I can't figure out how to make it work.  I've tried pin-slot but can't make it work without moving to end or center of the pin.  I want the rod to stay where it is in the pics but move along the slot.  Thanks

 

Slot.JPG

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Accepted solutions (2)
1,719 Views
12 Replies
Replies (12)
Message 2 of 13

jhackney1972
Consultant
Consultant

Please attach your model.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

John Hackney, Retired
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Message 3 of 13

barkster
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Here you go

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Message 4 of 13

jhackney1972
Consultant
Consultant

I do not believe there is a method of animating this motion but you an manually exercise it using a Parameter.  You may have considered using Contact Sets but again there is not a method of driving it along the path, especially with a Contact Set involved. The video will explain.  I am returning your model as an F3Z file so when you upload it be cautious where you do it.

 

(view in My Videos)

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Message 5 of 13

barkster
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Awesome, I had looked at contact set too but I think you have to have a joint first.  I'll take a look at your file, I appreciate the help.

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Message 6 of 13

barkster
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Enthusiast

So I think I was able to do it, I split the rod body with the edges of the mount then did a planer jointer then a contact set, seems to work.  

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Message 7 of 13

barkster
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Enthusiast

any ideas as to why everything works till I add the last revolve joint for the pin at the top holding the air brake, then nothing moves.  I'm so close

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Message 8 of 13

jhackney1972
Consultant
Consultant

This is an entirely different model as far as the rod motion.  It is a straight slot, is this what you need now? 

 

By the way, I want to bring something to your attention. When responding to a post from someone, do not use the "Post Reply" icon as this will address your post to yourself. Instead use the "Reply" icon on the post you are responding to address your post to that person. Look back at the messages in this post and you will see what I mean.

John Hackney, Retired
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Message 9 of 13

barkster
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Yeah I had it working with the L slot but then realized I didn't need it to go up only back so I remove the vertical slot. Still can't get that last joint to work.

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Message 10 of 13

jhackney1972
Consultant
Consultant
Accepted solution

The new model with the corrected motion is attached.  This one is a piece of cake compared to the other one.  In the video I show you the substitute for using a Contact Set.  You should avoid Contact Sets if at all possible, they can be a real pain as you add joints.

 

Please do not forget to select the "Accept Solution" icon on my post if this solves your issue.  Ask for further help if needed.  Model is attached but I would simply modify yours if you can.

 

(view in My Videos)

John Hackney, Retired
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Message 11 of 13

barkster
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That's cool but the airbrake should rotate too.

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Message 12 of 13

jhackney1972
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Consultant
Accepted solution

Oops!, I accidentally checked the Pin-Slot Joint Rotation limits.  Just remove the checks in the boxes indicated.

 

Remove Min Max.jpg

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Message 13 of 13

barkster
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Awesome, I dug around in them and missed that one too.  I really appreciate the help.  Thank you very much

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