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Assembly Mates
brian_pinder662
Member Posts: 119 ✭✭
Can anyone give some advice please. I have modelled a ball bearing in part studio and the mated it together as a sub assembly.Every thing works fine, when outer ring is fixed, inner ring, balls & cage revolve fine. When moved about the screen all parts remain together when outer ring is unfixed
However after inserting into the main assembly, when trying to mate to the main assembly the outer ring explodes from the balls, cage & inner ring. Depending on which mate I try to use in some cases the whole bearing explodes. Obviously I am going wrong some where, It will be very much appreciated if anyone can help so that I can move on.
Best regards Brian.
However after inserting into the main assembly, when trying to mate to the main assembly the outer ring explodes from the balls, cage & inner ring. Depending on which mate I try to use in some cases the whole bearing explodes. Obviously I am going wrong some where, It will be very much appreciated if anyone can help so that I can move on.
Best regards Brian.
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Best Answers
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Options
john_mcclary
Member, Developers Posts: 3,897 PRO
First you will want to re-do your bearing assembly. You have a lot of unused group mates and each rivet mated separately.
Instead use the existing circle pattern that you used for your balls
That and you should use a fastened mate to connect your ball and cage.
It's that and the cage isn't fully mated.
The easy thing is to just start over your assembly like this:
https://cad.onshape.com/documents/993bc60cff58b32e7c6e46f4/w/d1d2c950f60707a107c8f791/e/f48e5e0015a615edf18d7e00
Now you should delete all mates connected to the bearings, then unfix them.
Fix the main - unmoving body of your assemblies. I assume that is the ID Body part you have.
Now fasten the "Outer Races" of the bearings to the Bearing spacer, and the extension tube.
I then used a slider mate to attach the inner races to the moving shaft. This will lock their rotation with the shaft, while still letting them be positioned by the spacer (If you want to change the spacing, update the length of your spacer) this way you won't have to edit a mate offset later.
Let me know if this worked for you
Here is the final result
https://cad.onshape.com/documents/993bc60cff58b32e7c6e46f4/w/d1d2c950f60707a107c8f791/e/2693b8b6f52b8e83dbd18595
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Optionsbrian_pinder662
Member Posts: 119 ✭✭
Marvellous John, will sleep better tonight, Got visitors at the moment but can't wait to try. will post how I get on ASAP
Cant thank you enough. Brian2 -
Optionsbrian_pinder662
Member Posts: 119 ✭✭
Thanks again John, Just followed your detailed example and everything is working fine.
Till next time, All the best. Brian.0
Answers
Remember, Fixed only works in the assembly it is fixed in.
If you were to bring in a hand full of parts, set them all to fixed. Then insert that sub assembly into another assembly. All the parts would be floating.
So make sure you only have (1) fixed part in your bearing assembly.
brian.
You can copy and paste the url.
Here is an example:
https://forum.onshape.com/discussion/9107/forum-post-checklist
Cheers, OwS
HWM-Water Ltd
Instead use the existing circle pattern that you used for your balls
That and you should use a fastened mate to connect your ball and cage.
It's that and the cage isn't fully mated.
The easy thing is to just start over your assembly like this:
https://cad.onshape.com/documents/993bc60cff58b32e7c6e46f4/w/d1d2c950f60707a107c8f791/e/f48e5e0015a615edf18d7e00
Now you should delete all mates connected to the bearings, then unfix them.
Fix the main - unmoving body of your assemblies. I assume that is the ID Body part you have.
Now fasten the "Outer Races" of the bearings to the Bearing spacer, and the extension tube.
I then used a slider mate to attach the inner races to the moving shaft. This will lock their rotation with the shaft, while still letting them be positioned by the spacer (If you want to change the spacing, update the length of your spacer) this way you won't have to edit a mate offset later.
Let me know if this worked for you
Here is the final result
https://cad.onshape.com/documents/993bc60cff58b32e7c6e46f4/w/d1d2c950f60707a107c8f791/e/2693b8b6f52b8e83dbd18595
Cant thank you enough. Brian
See B1
https://cad.onshape.com/documents/993bc60cff58b32e7c6e46f4/w/d21f49dac8f1f648647fca18/e/f48e5e0015a615edf18d7e00
Till next time, All the best. Brian.