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Linkages connect mechanical parts and help control motion.
Pin Joint
A revolute joint (also called pin joint or hinge joint) is a one-degree-of-freedom kinematic pair used in mechanisms. Revolute joints provide single-axis rotation function used in many places such as door hinges, folding mechanisms, and other uni-axial rotation devices.
Ball Joint
Spherical bearings that connect the control arms to the steering knuckles. They are used on virtually every automobile made and work similarly to the ball-and-socket design of the human hip joint.
Universal Joint
A joint that can transmit rotary power by a shaft over a range of angles.
A coupling or joint that can transmit rotary power by a shaft over a range of angles.
Bearing
A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
Bell Crank
A bellcrank is a type of crank that changes motion through an angle. The angle can be any angle from 0 to 360 degrees, but 90 degrees and 180 degrees are most common. The name comes from its first use, changing the vertical pull on a rope to a horizontal pull on the striker of a bell, used for calling staff in large houses or commercial establishments.
A lever with two arms and a common fulcrum in the middle.
A lever with two arms that have a common fulcrum at their junction.
Allows rotation motion in one direction. Keeps the mechanism from rotating in the wrong direction
Slide
A part of a machine or musical instrument that slides.
Scissors Mechanism
A mechanism that uses linked, folding supports in an x-pattern.
A scissors mechanism uses linked, folding supports in a criss-cross 'X' pattern, known as a pantograph.
Parallel Mechanism
A mechanical system that uses several computer-controlled serial chains to support a single platform
A parallel manipulator is a mechanical system that uses several computer-controlled serial chains to support a single platform, or end-effector. Perhaps, the best known parallel manipulator is formed from six linear actuators that support a movable base for devices such as flight simulators. This device is called a Stewart platform or the Gough-Stewart platform in recognition of the engineers who first designed and used them.
Toggle Mechanism
Toggle mechanisms are used to obtain large force amplification in such applications as sheet metal punching and forming machines.
A toggle mechanism is a mechanism that are arranged so a small force can be placed in one area and it will crest a larger force at another point. One of its purpose is to put rotational energy into a linear motion. The other purpose is to lock positions of linkages.
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