Recent Blogs
External Geneva Drive: Index and Dwell
Explore an external Geneva drive and calculate index, engagement and dwell angles from slot count, plus the driver period from rotation speed.
Grooved Barrel Cam: Reciprocating Timing Calculator | FIRGELLI
Convert rise, dwell and return angles into milliseconds at a selected cam rpm. Check the 360-degree angle sum and explore a schematic barrel-cam cycle.
Waved-wheel Cam: Ideal Follower Event-rate Calculator
Compare two cam speeds and wave counts using one event per wave. The illustration shows cam-follower contact; the outputs calculate event rate and frequency.
Cam-wheel with Profile Rim Mechanism: How It Works, Parts, Diagram and Industrial Uses Explained
Explore a profile-rim cam with a guided roller. Compare cycloidal lift, cycle time, peak speed, acceleration and inertial allowance per unit follower mass.
Endless-spiral Cylinder Crank Substitute Mechanism: How It Works, Diagram, Formula & Uses
Explore a closed helical barrel cam with rounded reversals. Calculate stroke, cycle rate, mean axial speed and straight-flank clearance play.
Irregular Rocking Motion: Work and Return Allocation Calculator | FIRGELLI
Watch a crank pin drive a grooved rocking arm. Separately compare two entered angular allocations, their ratio and normalized shares.
Axial-to-rotational Motion Conversion Mechanism: How It Works, Diagram, Formula and Uses
See a guided nut drive a helical shaft and calculate rotation from stroke and lead. Compare turns, radians and degrees per millimeter, with backdriving limits...
Scott Russell Linkage Mechanism Explained: Diagram, Formula, Stroke and Uses
Scott Russell linkage explained — how this straight-line mechanism converts rotary motion into perfectly linear travel for test rigs, lifts, and lab equipment.
Rotary and Longitudinal Motion: How It Works, Mechanisms, Formulas, and Real-World Uses Explained
Rotary and longitudinal motion converts spinning input into straight-line output. Learn the mechanisms, formulas, and real machine examples used in automation.
Planar Mechanism Mobility: Constraint-Count Worksheet
Calculate the generic planar mobility count from links and joints, and explore a four-bar example. Constraint independence and actual geometry require separate checks.