Need some kinematics advice

[begnor]

I'm trying to develop a simulation where revolving about one joint will force a surface to surface contact that drives a second rotation that is perpendicular to the first. The surface to surface contact is not consistent, or always on the same two surfaces. I have my fixed component, the others are constrained to the fixed component in Assembly Design.

The main rotation is the vertical line at the left side of the pic. The secondary rotation is the phantom line running horizontally. The contact area is the grey and blue parts. You can see the straight line on the grey part has to ride against that blue hook. When I try to add a slide curve, roll curve, or point surface joint I get the error that the simulation is not feasable. If I leave that joint out, I can manually rotate the two commands and make it appear correct, but I want to be able to use the joints. Is this possible?

 

[begnor]

lets try this...

 

[begnor]

 

[itsmyjob]

I guess you forgot to take into consideration the fact that the intersection point is not moving into a plane

This intersecting point is rotating along both axis.

I would do the following:

create a part with a copy of the curv from the blue file (call it blue ')

revolute grey / beige
sliding curve grey / blue '
prismatic joint blue' / blue
revolute blue / beige


or juste change 1 joint (giving the DoF you are missing):

get a revolute grey / beige
sliding curve grey / blue
cylindrical blue / beige (blue will move a bit along its axis)

Eric N.
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