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Flexibility of Patterned Sub Assemblies

MechEngManMechEngMan Member Posts: 7 PRO
Hi There, 

I was informed by Onshape support that the flexibility of sub-assemblies is removed once they are patterned. I am looking for an alternative. 

Ideally, if I move one of these camera brackets, the other three will follow. I have tried linking the sub-assembly slider mates with a linear relation in the top-level assembly, but that doesn't seem to work. 



Any ideas on how to achieve this? I would definitely like to keep the sub assembly. I know if I built it all within the top-level assembly and patterned it, the motion would be possible, but this would create a pretty messy BOM. 

Comments

  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,561
    Are they individually assembled rather than patterned? I tried a simple test with a linear relation at the top level and it worked.
  • MechEngManMechEngMan Member Posts: 7 PRO
    edited October 30
    NeilCooke said:
    Are they individually assembled rather than patterned? I tried a simple test with a linear relation at the top level and it worked.
    Hey Neil, thanks for the quick reply! 

    I am probably missing something, if I assemble 2 instances of the sub assembly into the top level assembly, then try to add a linear relation between the slider mates in the sub assemblies, it breaks. 


    Should I be going about this differently? 
  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,561
    I can take a look if you want? Share it with me with edit rights - [email protected]
  • MechEngManMechEngMan Member Posts: 7 PRO
    NeilCooke said:
    I can take a look if you want? Share it with me with edit rights - [email protected]
    Done, thanks! 
  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,561
    Changed linear relation to "reverse" and it works - not sure why it wouldn't before?
  • MechEngManMechEngMan Member Posts: 7 PRO
    NeilCooke said:
    Changed linear relation to "reverse" and it works - not sure why it wouldn't before?
    I wonder if it has something to do with the limits set on the slider mate? But regardless, thank you for the super swift help. 

    Cheers, 
  • NeilCookeNeilCooke Moderator, Onshape Employees Posts: 2,561
    NeilCooke said:
    Changed linear relation to "reverse" and it works - not sure why it wouldn't before?
    I wonder if it has something to do with the limits set on the slider mate? But regardless, thank you for the super swift help. 

    Cheers, 
    It may well be - we use a different method to solve assemblies with limits. If you don't mind creating a support ticket and sharing that doc with them it would be useful for us to track down what the issue is.
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