Difficulty using Motion Study

[evandiplacido]

I am designing a servo gripper for the end of a robot arm. I created motion links for the rack and pinion, which works great. I can rotate the pinion from 0 to -127 degrees, which also moves the racks accordingly. I am trying to add a Motion Study so I can see the animation more clearly.

I created a Motion Study, selected the revolute joint on the pinion, then added a point at step 18 (or something) and set the angle to -127 degrees, but then the racks move way too far: 

I tried capturing the position, but I am still struggling to get this to work. I added a copy of this project as an attachment.

[jhackney1972 · Accepted solution]

You lack a base grounded component and then a couple of joints to keep your model together.  I did a quick grounding and an As Built Joint to get it to stay together then the Motion Study is easy to add.  I used a Tangent Relationship on the cam follower and slot.

Model is attached, caution where you open it so it does not pollute your assembly.  I recommend a separate folder.

[evandiplacido]

Thanks so much!