The Joint command is a simple way to position components and describe motion. Creating a joint fully defines the component location and motion in one step. End, mid, and center points are used to associatively position components. The geometry you select determines the default joint type, or you can specify a joint type.
The following describes the joint types and how they operate while positioning a component:
Rigid- Removes all degrees of freedom (DOF). Welded and bolted connections are examples of a rigid joint.
Rotational- Specify one rotational DOF. Hinges and rotating levers are examples of a rotational joint.
Slider- Specify one translational DOF. A slide block moving along a track is an example of a slider joint.
Cylindrical- Specify one translational and one rotational DOF. A shaft in a tube is an example of a cylindrical joint.
Planar- Specify two translational and one rotational DOF perpendicular to the linear. To place a component on a planar face, use this joint type. The component can slide or rotate on the plane.
Ball- Specify three rotational DOF. A ball and socket are an example of a ball joint.
Note:
- With the addition of the joint command, both constraints and joints are now described as relationships.
- In the browser, the Constraints folder is renamed to Relationships, and displays in both the Assembly View and the Modeling View.
- You can use joints with constraints to position components and describe motion.
For more information, check out the new Place and connect parts interactive tutorial or click here.
Inventor joints are automatically converted to simulation joints when you enter the Dynamic Simulation environment. The converted connections are listed as standard joints in the simulation environment browser. The following are the automatic conversions:
| Inventor joint | Joint in Dynamic Simulation |
| Rigid | Welding |
| Rotational | Revolution |
| Slider | Prismatic |
| Cylindrical | Cylindrical |
| Planar | Planar |
| Ball | Spherical |
You can edit the joints that are created automatically in Dynamic Simulation using the context menu in the browser.
Joints locked in the Assembly environment are also locked in Dynamic Simulation. To unlock a joint, right-click and clear the selection for Lock dof.
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