Need a joint that removes one degree of freedom
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report
I often want to remove one degree of freedom of a component, but there is not a joint that does that. For example: a bracket with a hole and a slot is mounted to a plate with two holes. A revolute joint can be added to mate the bracket hole to the plate hole. But there is no joint that will remove the single remaining degree of freedom of the bracket rotating around the hole. There needs to be a way to locate one component relative to two features of another component. The work around is use a Rigid joint and eyeball the angle setting until the hole looks to be aligned with the slot. If you move the slot you have to find the Rigid joint and adjust the angle again.
The Planner joint removes 2 degrees for freedom: a point on a plane and an axis normal to the plane. The axis required to be normal is the problem.
Using Inventor the constraints acted differently (as to how many degrees of freedom were removed) depending on the elements (plane, line or point) selected as input. Not so with Fusion 360.