Скачать или смотреть Cam-Operated Ratchet Pawl Mechanism — Simple Demo, 3D Model & Real Wooden Prototype Explained

This video shows the working of a cam-operated ratchet pawl system through a 3D model and a real prototype. The cam lifts and releases the pawl in timed motion, causing the ratchet wheel to move step by step while preventing reverse rotation.

The mechanism works by converting continuous rotary input into controlled intermittent movement. The cam profile determines how smoothly the pawl engages and disengages. A gradual lift reduces wear and noise, while the pawl tip angle ensures firm locking against the ratchet teeth.

In practical builds, precise clearances, strong springs, and proper alignment are essential. The wooden model demonstrates the concept simply, while the CAD model highlights ideal geometry and smoother motion. Common issues like jamming, slipping, or excess wear can be fixed by adjusting spring preload, pivot placement, and tooth profile.

This system is widely used in indexing machines, counters, wind-up drives, and mechanical automation. It’s a compact and reliable way to achieve accurate stepwise motion in engineering applications.

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