Sunday, February 6, 2011

Hoekens Straight-line Mechanism

The Hoekens linkage is a four-bar mechanism that converts rotational motion to approximate straight-line motion. The Hoekens linkage is a cognate linkage of the Chebyshev linkage.

"DESIGN OF MACHINERY" by Robert L. Norton shows the link ratios that give the smallest possible structural error in either position or velocity over values of Δβ from 20° to 180°.

The followings are some interesting examples of Hoekens straight-line mechanism from youtube.

Walking robot


Marble machine





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