21 Replies Latest reply on Sep 27, 2017 12:16 PM by Edward Poole

Ball And Socket Constraint Ideas.........

Dave Bear Sep 27, 2017 6:50 AM

Hi all,

I've search the forum for a similar post but only really found one from 2012 that wasn't fully resolved.

So in the hope that idea's and functions have changed, could people please give me their best suggestions on how to constrain my ball and socket.

Both these parts are self made as I'd rather learn how to make them than just download them. With that in mind they might not be exactly up to engineering standards but I'm sure they'll be alright for my purpose. Anyway, what I need to achieve, in simple terms, is that the socket inner (A) does not rotate past the ball base (B). I have played with trying to mate sketch's but only confused myself and ended up in a mess.

Parts are attached.

Regards Dave,

Socket And Ball.zip 483.8 KB

Re: Ball And Socket Constraint Ideas.........

John Stoltzfus Sep 27, 2017 7:28 AM (in response to Dave Bear)

While you were typing I was doing - lol
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Re: Ball And Socket Constraint Ideas.........

Dave Bear Sep 27, 2017 7:30 AM (in response to Dave Bear)

Hi Dennis,
Yes, you are correct! I have a Spherical mate to start with, in fact, at this stage, it is it's only mate!
Now when you say create an "intermediate part" with its centre at the centre of the socket, this would be the "cone" and the "cone" would only be a sketch is that correct?

Dave.
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- Re: Ball And Socket Constraint Ideas.........
  
  Dave Bear Sep 27, 2017 7:49 AM (in response to Dave Bear)
  
  I'm using SW2016 SP3................
  
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Re: Ball And Socket Constraint Ideas.........

Dave Bear Sep 27, 2017 7:44 AM (in response to Dave Bear)

Hey John,
How'd ya know I was typing???? lol
Ummmm, appreciate the help, two problems. One, I'm $hit scared of surfacing as I haven't ventured there yet and Two, I can't open 2017 files.
But I could try and follow your steps from the pics, if I can't get Dennis's idea to work.........

Dave.
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- Re: Ball And Socket Constraint Ideas.........
  
  Kevin Pymm Sep 27, 2017 7:53 AM (in response to Dave Bear)
  
  Now you're typing John
  
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  - Re: Ball And Socket Constraint Ideas.........
    
    Dave Bear Sep 27, 2017 7:57 AM (in response to Kevin Pymm)
    
    Are you guys pulling my leg or do you actually know somehow when people are typing? Is this via some mobile app that shows you like 'Messenger' does?
    
    Dave.
    
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  - Re: Ball And Socket Constraint Ideas.........
    
    John Stoltzfus Sep 27, 2017 8:13 AM (in response to Kevin Pymm)
    
    Yep and taking the high road like Dennis Dohogne - Deleted my messages as well - I will say the same thing Dennis said DUH - way to go Kevin Pymm for showing us the realway to do stuff like this, KISS
    
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    - Re: Ball And Socket Constraint Ideas.........
      
      Dave Bear Sep 27, 2017 8:20 AM (in response to John Stoltzfus)
      
      I was wondering why Dennis's messages had gone.............
      
      Dave.
      
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Re: Ball And Socket Constraint Ideas.........

Krzysztof W. Sep 27, 2017 7:47 AM (in response to Dave Bear)

Hi.
Here is what i have done.
I draw a sketch (X2 part) on right plane to get 3 points. Then i have used 3 limit distance mates from points to the blue surface.
Dimensions are only indicative, its necessary to make some small adjustment to get correct values.
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- Re: Ball And Socket Constraint Ideas.........
  
  John Stoltzfus Sep 27, 2017 7:49 AM (in response to Krzysztof W.)
  
  Krzysztof W. - That is the best way
  
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  - Re: Ball And Socket Constraint Ideas.........
    
    Krzysztof W. Sep 27, 2017 8:16 AM (in response to John Stoltzfus)
    
    As we see, it's a one way not the best way
    
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- Re: Ball And Socket Constraint Ideas.........
  
  Dave Bear Sep 27, 2017 7:55 AM (in response to Krzysztof W.)
  
  Hi Krzysztof W.,
  Thank you for what seems to be the most simplest of approaches. With that in mind, would you consider this to be a robust way to achieve to result? Curious?
  
  Dave.
  
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  - Re: Ball And Socket Constraint Ideas.........
    
    Krzysztof W. Sep 27, 2017 8:06 AM (in response to Dave Bear)
    
    It's simple, but i'm not sure if it's perfect
    
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Re: Ball And Socket Constraint Ideas.........

Kevin Pymm Sep 27, 2017 8:01 AM (in response to Dave Bear)

Dave,

I just added a Limit Angle mate between the temporay axis of ball & socket, seems to work at 0 & 20°
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- Re: Ball And Socket Constraint Ideas.........
  
  Dennis Dohogne Sep 27, 2017 8:06 AM (in response to Kevin Pymm)
  
  DUH!
  That is so simple and easy! It does the job beautifully. I’m deleting my other posts. That is perfect, Kevin Pymm.
  
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- Re: Ball And Socket Constraint Ideas.........
  
  Todd Blacksher Sep 27, 2017 8:20 AM (in response to Kevin Pymm)
  
  Kevin Pymm wrote:
  
  Dave,
  
  I just added a Limit Angle mate between the temporay axis of ball & socket, seems to work at 0 & 20°
  
  Wow, that is such a clean and elegant solution - Thank You Kevin Pymm!
  
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- Re: Ball And Socket Constraint Ideas.........
  
  Dave Bear Sep 27, 2017 8:27 AM (in response to Kevin Pymm)
  
  Wow, that's amazing Kevin!
  Thank you so much.
  I had actually just finished trialling Krzysztof W.'s method and found that cosmetically it actually work a little better with four points, unless my eyes deceive me. But your solution is just pure plain brilliance so I shall adopt that and mark this as correct for others.
  
  Thank you to all who helped........
  
  Dave.
  
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  - Re: Ball And Socket Constraint Ideas.........
    
    John Stoltzfus Sep 27, 2017 8:37 AM (in response to Dave Bear)
    
    The rest of us just baffled you with BS - hehe - that was our intent from the beginning
    
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    - Re: Ball And Socket Constraint Ideas.........
      
      Edward Poole Sep 27, 2017 12:16 PM (in response to John Stoltzfus)
      
      LMAO!
      
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Re: Ball And Socket Constraint Ideas.........

Kevin Pymm Sep 27, 2017 9:36 AM (in response to Dave Bear)

Thanks guys for all the compliments....& the kiss John Stoltzfus
To be honest I didn't think it was going to work & be that simple after reading the other amazing solutions.
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- Re: Ball And Socket Constraint Ideas.........
  
  John Stoltzfus Sep 27, 2017 9:44 AM (in response to Kevin Pymm)
  
  and..... - That's why I cringed when I here myself say "It can't be done in SW" - much less be simple.
  
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