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Parts shifted in top level assembly, but not the sub assemblies
SpinnersTheVole
Member Posts: 2 ✭
I have some parts that for some reason are "exploded" on the top level assembly, but are correctly in place on multiple lower level assemblies. The washers only freedom of movement is axial rotation so I can't see why that would cause any issues. I am using spherical mates for the leveling washers, could they be flipping or something? If it is flipping, Only thing I can figure to do is set a mate with limits that would still allow the other mates to not be over constrained but limit the flipping. Still not sure that's what's going on.
https://cad.onshape.com/documents/6a4bd26cde079af9f00fd562/w/654be01d81a4161255a7b07f/e/a55c8e38d91465235668a161?renderMode=0&uiState=697b480ac4327fe99ee4e692
Top level-exploded and on the wrong side of the beam:
One level down and showing as it should:
One more level down, showing correct:
Comments
Without opening the assemblies, it’s hard to be 100% sure, but one thing that is very confusing when starting to use Onshape coming from other systems is that Fix constraints only apply to the assembly that they are in. When you add a subassembly to a higher level assembly by mating its origin or a fixed part, the parts can float. I avoid Fix. I prefer to create an “origin” Mate Connector, fastened to the origin of each assembly level, and then make sure all the things that shouldn’t move around are somehow connected together and to that origin MC.
Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn