Sarrus linkage
Encyclopedia
The Sarrus linkage, invented in 1853 by Pierre Frédéric Sarrus
, is a mechanical linkage
to convert a limited circular motion to a linear motion without reference guideways. The linkage uses two perpendicular hinged rectangular plates positioned parallel over each other. The Sarrus linkage is of a three-dimensional class sometimes known as a space crank, unlike the Peaucellier–Lipkin linkage which is a planar mechanism.
Although Charles-Nicolas Peaucellier
was recognized for being the first to invent such a straight-line mechanism
, the Sarrus linkage was invented earlier; it went, however, largely unnoticed.
Pierre Frédéric Sarrus
Pierre Frédéric Sarrus was a French mathematician.Sarrus was professor at the University of Strasbourg, France and member of the French Academy of Sciences in Paris ....
, is a mechanical linkage
Linkage (mechanical)
A mechanical linkage is an assembly of bodies connected together to manage forces and movement. The movement of a body, or link, is studied using geometry so the link is considered to be rigid. The connections between links are modeled as providing ideal movement, pure rotation or sliding for...
to convert a limited circular motion to a linear motion without reference guideways. The linkage uses two perpendicular hinged rectangular plates positioned parallel over each other. The Sarrus linkage is of a three-dimensional class sometimes known as a space crank, unlike the Peaucellier–Lipkin linkage which is a planar mechanism.
Although Charles-Nicolas Peaucellier
Charles-Nicolas Peaucellier
Charles-Nicolas Peaucellier was a French engineer who graduated from the École polytechnique. He made a career in the French army and was promoted to général de division in 1888....
was recognized for being the first to invent such a straight-line mechanism
Parallel motion
The parallel motion is a mechanical linkage invented by the Scottish engineer James Watt in 1784 for his double-acting steam engine.In previous engines built by Newcomen and Watt, the piston pulled one end of the walking beam downwards during the power stroke using a chain, and the weight of the...
, the Sarrus linkage was invented earlier; it went, however, largely unnoticed.
External links
- robotics.eecs.berkeley.edu – Sarrus linkage
- A Makerbot Printable Sarrus–Linkage a design for RepRapRepRap ProjectThe RepRap project is an initiative to develop a 3D printer that can print most of its own components...