Poka-Yoke (ポカヨケ) is a Lean manufacturing concept meaning “mistake-proofing.” It prevents errors before they occur, improving efficiency and quality.
- Developed by Toyota’s Shigeo Shingo
- Eliminates human errors in production
- Reduces defects & rework
Key methods include:
- Contact methods – Sensors ensure correct assembly.
- Fixed-value methods – Prevent missing process steps.
- Motion-sequence methods – Ensure tasks are done in order.