Recent Blogs
Variable Circular Motion: Instantaneous Pitch-radius Ratio
Calculate one ideal no-slip gear contact state from input speed and two pitch radii. The tool does not generate non-circular pitch curves or a complete...
Elliptical Gear and Slotted Bar: Ideal Phase and Projection
Explore equal elliptical pitch curves with an illustrative slotted bar. Calculate ideal speed ratio and a separate cosine projection; actual bar motion and loads are...
Slow Forward and Quick Back Circular Motion: How the Elliptical Gear Quick-Return Mechanism Works
Slow forward and quick back circular motion explained — how elliptical gear pairs deliver a working stroke and rapid return in shapers, presses and packaging...
Rectangular and Noncircular Gears: Contact Radii and Instantaneous Speed
Explore the local speed relation behind noncircular gears. Calculate pitch-point radii and opposing output speed; complete rectangular gear profiles are not generated.
Irregular Vibratory Motion: Normalized Speed-Profile Calculator | FIRGELLI
Compare modulation depths implied by two peak-to-minimum speed ratios for a stated sinusoidal law. The plot does not calculate gears, machine vibration or screening performance.