hood: ⚙️ 1. Electromagnetic vibration An electromagnetic coil rapidly pulses (typically 50–120 Hz), causing the bowl to oscillate. This vibration isn’t random — it’s tuned for amplitude and frequency based on: • Part mass • Friction coefficient • Geometry • Desired feed rate The bowl doesn’t just move up and down. It moves in a spiral micro-throw motion — tiny upward and forward movements that “walk” parts along a helical track. ⸻ 🧲 2. Directional motion from angled springs The bowl is mounted on angled leaf springs. When vibration occurs, those springs convert vertical oscillation into a combined vertical + horizontal vector. That angled motion = forward travel. No conveyor belt. Just physics. ⸻ 🧩 3. Passive mechanical orientation As parts climb the spiral track, they encounter: • Cutouts • Rails • Air jets • Dead zones • Step drops Incorrectly oriented parts fall back into the bowl. Correct ones continue upward. This is called mechanical orientation sorting — usi...