Manage two ball joints on DMU Kinematics

Simulation Generality
1

Hi all

I have to do the kinematics of a set on CATIA V5R21. I have two levers guided in rotation by a pivot link on each lever. And I have a connecting rod that connects these two levers with a ball joint on each side of the connecting rod. My levers are not in the same plan.

 

How can I simulate my set? Because when I put two spherical balls for the ball joints, my DDL goes up to 1 and the whole thing can't be simulated. I tried to turn a spherical for a slippery pivot, it works but my connecting rod is not in the right place. 

 

Thank you in advance for your help! I'm completely stuck.

2

Hello

If I understand correctly, it is the rotation around the axis of the connecting rod that is free and poses a problem.

Are there finger spherical lenses to block this rotation? Otherwise 2 perpendicular pivots with a very slight offset must work.

1 Like
3

If I understand correctly, your mechanism looks like a 4-bar 3D system.

But, could you send a sketch or image of the kinematic diagram of your mechanism?

This would allow us to better guide you.

4

Hello

 

The question is a bit old but the link you describe can't work

The connection you want to make is double gimbal.

Kind regards