Mechanisms in CAD

there are several types of mechanisms.. here are some of them..
-
Step 1: Video
-
Step 2: models
1) cam follower - https://grabcad.com/library/cam-follo...
2) Arandela Mechanism - https://grabcad.com/library/arandela-...
3) Geneva Mechanism - https://grabcad.com/library/geneva-me...
4) Hand driller - https://grabcad.com/library/hand-dril...
5) Drone - https://grabcad.com/library/drone-142
6) Ceiling fan - https://grabcad.com/library/ceiling-f... / https://grabcad.com/library/ceiling-f...
7) product toward gravity - https://grabcad.com/library/ball-towa...