Recent Blogs
Watt Straight-Line Linkage: Animation and Path Calculator | FIRGELLI
Explore a Watt four-bar, vary link lengths and input sweep, and compare approximate straight-line travel with the actual sampled lateral deviation.
Hoeken Straight-Line Example: Animation and Path Calculator | FIRGELLI
Scale a defined Hoeken four-bar and compare travel, sampled deviation and crank period. See the approximately straight working interval and curved return.
Six-bar Linkage Mechanism Explained: How It Works, Parts, Diagram and Uses
Explore a moving Watt-type six-bar linkage with seven pin joints and use the planar mobility calculator to compare link and joint counts.
Chebyshev Approximate Straight-Line Linkage: Exact Four-Bar Closure
Quadrangular rectilinear motion explained — how a four-bar linkage produces straight-line output, with formulas, tolerances, and real packaging-line examples.