Mechanisms — Motion Control Devices

Recent Blogs

Clover-leaf Cam diagram
Clover-leaf Cam: Three-Lobe Opposed-Roller Motion and Travel Calculator
Animate a three-lobe cam between two rollers on one sliding bar. Explore odd-lobe harmonic variants, reciprocation counts and cumulative rise travel.
Centrifugal Safety Catch for Hoisting Drums diagram
Centrifugal Safety Catch for Hoisting Drums: How It Works, Parts, Formula & Uses Explained
Explore three rotating hooks engaging fixed frame studs, alongside a separate mrω² force comparison. Results do not determine hoist trip speed or stopping capacity.
Cam Sectors diagram
Cam Sectors Mechanism Explained: How It Works, Diagram, Parts, Applications and Formula
Explore paired logarithmic-spiral cam sectors, their changing contact radii and opposite rotations. Calculate the instantaneous speed ratio over a selected swing.
Brownell Crank Motion diagram
Brownell Crank Motion: Tangent-slide Geometry and Treadle Calculator
Explore Brownell’s spring-biased tangent-slide crank. Compare wrist radius, phase and treadle motion with a selected slide offset held during each revolution.
Bevelled Disc Cam diagram
Bevelled Disc Cam Mechanism: How It Works, Diagram, Formula, Animation and Industrial Uses
Explore an illustrative bevelled-rim cam driving a rod along a 45-degree guide. Compare sinusoidal stroke, frequency and lift ratio from the chosen geometry.
Ball Socket Ratchet diagram
Ball Socket Ratchet Mechanism Explained: How It Works, Parts, Formula, and Uses
Explore a spring-ball ramp ratchet and compare drive and return cam-out estimates. Understand flank-angle convention, per-ball preload and the limits of ideal geometry.
Angular Wipers diagram
Angular Wipers: Rockshaft, Inclined Toe and Guided-rod Animation
Explore a rocking wiper acting on an inclined toe and guided rod. Use a separate angle calculator to compare an offset with a reference length.
Alternating Rectilinear via Worm and Rack diagram
Alternating Rectilinear via Worm and Rack: How the Mechanism Works, Parts, Diagram and Uses
Explore a reversing worm-and-rack drive: reversing the worm returns the guided rack. Compare two radii against an entered tolerance in a separate calculator.
Almond Angular Shaft Coupling diagram
Almond Angular Shaft Coupling Mechanism: How It Works, Parts, Formula, and Uses Explained
Explore Thomas R. Almond’s crank-and-sleeve shaft coupling, then compare a separate single-Cardan velocity equation using angle, speed and phase.
Traverse Motion diagram
Traverse Motion: Pitch-to-diameter Comparison
Compare entered traverse pitch and material diameter using signed and percentage differences. An entered comparison band does not establish winding tolerance.
Rectilinear Vibrating Motion diagram
Rectilinear Vibrating Motion Mechanism: How It Works, Scotch Yoke Diagram, Formula and Uses
Explore Scotch-yoke motion and calculate stroke, amplitude, cycle frequency and peak slider speed from crank eccentricity and shaft RPM.
Rack and Pinion diagram
Rack and Pinion Mechanism: How It Works, Diagram, Formula, Calculator and Real-World Uses
Rack and Pinion explained — how the gear-and-bar mechanism converts rotation to linear motion, with formulas, real automotive steering examples, and design tradeoffs.
Shaft Coupling diagram
Shaft Coupling: Flexible Connection, Animation and Alignment Calculator
See how a flexible shaft coupling joins rotating shafts. Compare parallel and angular alignment measurements with selected reference values.
Angular Shaft Coupling diagram
Angular Shaft Coupling Mechanism: How It Works, Cardan Joint Diagram, Parts, Formula and Uses
Explore a single Cardan joint in motion. Calculate phase-dependent speed ratio and peak variation, and distinguish kinematics from load and operating ratings.
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