Related Devices
- Although rotation can be achieved by a semi gimbal mount most rotation stages are not designed based on the principles of kinematic determinacy.
- A linear motion bearing or linear stage having kinematic determinacy uses two V-grooves sliding on a cylinder, a flat surface sliding on a second parallel cylinder, and a flat surface joining the screw.
- The hexapod known from flight simulators allows motion with six degrees of freedom. For kinematic determinacy each leg consists of a ball set in a trihedral hole in the fixed frame, a ball joining a flat plate in the fixed frame, and a ball joing a trihedral hole in the mobile frame. The mobile part of the leg is connected with a thread which runs in thread of the fixed part.
- A screw-thread join gets kinematic determinacy the same way as any other rotation bearing.
- The ball bearing and cylindrical roller bearing are over-determined, having more points of contact than required for kinematic determinacy. This leads to decreased precision as the joints wear.
- The flexure bearing and piezoelectric element offer higher precision than other mechanical bearings.
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