Kinematic pair


Kinematic pair

A kinematic pair is the general name for two rigid bodies that can move with respect to each other via a mechanical constraint ("joint") between the two bodies. In kinematics, one classifies the kinematic pairs in two groups:
* Lower pairs: the constraints is of the "surface" type. The following joint types exist: revolute joint ("pin", "hinge"), prismatic joint ("slider"), cylindrical joint, screw joint, planar joint, and spherical joint ("ball and socket").
* Higher pairs: the constraint is of the curve or point type. For example: cams or gears.Kinematic pairs are the building blocks of most kinematic chains and mechanical linkages, e.g., gimbals, robots, car suspensions.

ee also

* Degrees of freedom
* Kinematics


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