Prismatic joint

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

  1. ^ Norton, Robert L. (2008). "2". Design of Machinery (4th ed.). Boston, MA: McGraw Hill Higher Education. p. 33. ISBN 978-0-07-312158-1.
  2. ^ Robotics Research Group. "Joint Types". University of Texas at Austin. Archived from the original on 2009-03-11. Retrieved 2009-02-04.


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Kinematic pair
Lower pairs
  • Revolute
  • Prismatic
  • Cylindrical
  • Screw
  • Planar
  • Spherical (ball)
Higher pairs


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