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Blocks rotate along the center without Revolute mate.

in Simulation
There is no mates connection between the center block and the 2 other blocks.
May I know why the 2 blocks moving together with the center block?
https://cad.onshape.com/documents/6f1297679fe443bf15bfcfa1/w/3e3031e96bb6b7565d9fbe4b/e/28e4be7c181e379d6da96d7d
0
Comments
Your question seems a bit off to me. Here's a sample of what I think you're looking for with out all the tangents mates.
https://cad.onshape.com/documents/bf85617310fee0393f950df9/w/ae0a57f136699f464e31d77b/e/e19c74ba15cd7fa4b1fddd5b
Thanks for your reply, but ….
I never ask the 2 blocks at the rim to rotate, I just ask the center block to rotate only.
However, both the cube and the rectangular block were rotate together with the center block, why? Please advise.
Thanks again.
Likely something to do with all the tangents used making them lock together some how.
Here's another sample with just the center block rotating. The other 2 blocks can be fixed any way you need.
https://cad.onshape.com/documents/bf85617310fee0393f950df9/w/ae0a57f136699f464e31d77b/e/e19c74ba15cd7fa4b1fddd5b