Physics:Prismatic joint
From HandWiki
Short description: Kinematic pair which constrains bodies to sliding along an axis without rotating
Prismatic joint seen in 2-dimensional form. Only linear motion is possible. In contrast to a revolute joint the axis is prevented from rotating (this can be accomplished by giving the axis a prismatic shape which is not visible here).
A prismatic joint is a one-degree-of-freedom kinematic pair[1] which constrains the motion of two bodies to sliding along a common axis, without rotation; for this reason it is often called a slider (as in the slider-crank linkage) or a sliding pair. They are often utilized in hydraulic and pneumatic cylinders.[2]
A prismatic joint can be formed with a polygonal cross-section to resist rotation. Examples of this include the dovetail joint and linear bearings.
See also
- Cylindrical joint
- Degrees of freedom (mechanics)
- Kinematic pair
- Kinematics
- Mechanical joint
- Revolute joint
References
- ↑ Norton, Robert L. (2008). "2". Design of Machinery (4th ed.). Boston, MA: McGraw Hill Higher Education. pp. 33. ISBN 978-0-07-312158-1.
- ↑ Robotics Research Group. "Joint Types". University of Texas at Austin. http://www.robotics.utexas.edu/rrg/learn_more/low_ed/joints/.
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