This article is about parallel motion in mechanics. For parallel motion in music, see Contrapuntal motion.
Animation of the parallel motion linkage. Dimensions (unit lengths a, b):
Link 2: a + a
Links 3 & 5: b + b, 2b
Links 4 & 6: a
Vertical distance between ground joints ≈ 2b Horizontal distance between ground joints ≈ 2a Thus, link 1 (total distance between ground joints)
In kinematics, the parallel motion linkage is a six-bar mechanical linkage invented by the Scottish engineer James Watt in 1784 for the double-acting Watt steam engine. It allows a rod moving practically straight up and down to transmit motion to a beam moving in an arc, without putting significant sideways strain on the rod.
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by Charles-Augustin de Coulomb (1785). James Watt patented his parallelmotionlinkage in 1782, which made the double acting steam engine practical. The...
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other, and the introduction of his parallelmotionlinkage allows the transmission of the power of the piston motion to be transmitted to the beam on both...
most proud of, was the parallelmotionlinkage, which was essential in double-acting engines as it produced the straight line motion required for the cylinder...
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analyze and design articulated systems ranging from four-bar linkages to serial and parallel robots. Kinematics equations are constraint equations that...
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