Can animation transfer an action through sequential parts?

fred_wild

I'm trying to model the basic action of a single key in an organ keyboard.  The key rests on a fulcrum. Depressing the key at the front lifts the tail end of the key at the back and pushes up a vertical dowel called a "stickler". The top end of the stickler, in turn, lifts the end of a horizontal lever above ("backfall") extending to the rear. The backfall rests under a fulcrum.  As the front end of the backfall lifts, the rear end drops, pulling open a valve controlling air flow into an organ pipe.  I modeled each part in Onshape and joined them in an assembly using revolute mates.  Each revolute mate animates the mated parts as desired, but animating the entire assembly either locks the assembly or moves the fulcrums.   I fixed the fulcrums in position, but Onshape cannot "apply transform."  When animation rotates the key on its fulcrum, the action should drop the tail end of the backfall. Can Onshape animation transfer the action through three or more parts?  Thank you.
Pipe Organ | Assembly 1 (onshape.com)

glen_dewsbury

I changed one of the revolute mates to cylindrical and the problem was resolved. Overall system tolerances can cause an extremely small misalignment problem between revolute mates because it wants to align them.
Animate revolute 5 that has limits and this will work. Adjust limits as required.
As an aside, notice that I unfixed one of the fulcrums them grouped with the other. Just gets rid of the caution flag that will show up every where.

https://cad.onshape.com/documents/56cb78622a401e8c4f4eba5e/w/ee2464ad21337c9b0bb14514/e/a9ed4f2c23b799a0430de610

glen_dewsbury

I changed one of the revolute mates to cylindrical and the problem was resolved. Overall system tolerances can cause an extremely small misalignment problem between revolute mates because it wants to align them.
Animate revolute 5 that has limits and this will work. Adjust limits as required.
As an aside, notice that I unfixed one of the fulcrums them grouped with the other. Just gets rid of the caution flag that will show up every where.

https://cad.onshape.com/documents/56cb78622a401e8c4f4eba5e/w/ee2464ad21337c9b0bb14514/e/a9ed4f2c23b799a0430de610

fred_wild

Now it works, but I don't know why.  Thank you for any suggestions.

fred_wild

Thank you.  The question is answered.  I especially like the fulcrum grouping.