Improper movement of components in motion study

[mateuszbugaj5]

I have created a simple model of a gripper which I wanted to animate and see how it will work in practice. To do that, I connected every component with proper joints, enabled motion set and made a motion study with action focused on moving the black piece. At first, everything seems to work just fine but I have noticed that red components don't move as they should. I was expecting them to get closer together when the black component enters the cut out but they do exactly the opposite. Can you suggest me a way to fix this problem and make my model work more realistic?

In the attatchment I included a video of the mentioned motion study. [https://imgur.com/0g881CF]

[TrippyLighting · Accepted solution]

Based on the the model works as I would expect it and all the joints behave as expected.

If you want t to move differently, then you need to change your design.