Andon & Pokayoke System
1. Andon System:
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Purpose: The Andon system is a visual management tool used to quickly detect and respond to issues on the production floor. It provides real-time visibility into the status of production and helps identify and address problems as they occur.
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Components: The Andon system typically consists of visual signals (often lights or displays) and an alerting mechanism. Operators or workers can trigger these signals when they encounter a problem or when a predefined condition is met.
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Functionality: When a problem arises, an operator can activate the Andon system by pressing a button or pulling a cord, for example. This immediately signals the need for attention. The system may also provide information about the location and nature of the problem, allowing maintenance or management to respond promptly.
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Benefits: The Andon system promotes real-time problem-solving, reduces downtime, improves communication between workers and management, and enhances overall production efficiency and quality.
2. Poka-Yoke (Mistake-Proofing) System:
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Purpose: Poka-Yoke is a concept aimed at preventing errors and defects in manufacturing processes. It involves designing processes or devices in a way that makes it nearly impossible for mistakes to occur.
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Components: Poka-Yoke systems can include various elements such as sensors, physical guides, mechanisms, or even software to eliminate or prevent errors. These components are designed to provide feedback or stop the process when an error is detected.
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Functionality: The Poka-Yoke system is designed to either prevent a mistake from happening or detect it immediately when it occurs. For example, a car assembly line might have a Poka-Yoke system that prevents the installation of the wrong-sized bolt by only allowing the correct size to fit.
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Benefits: Poka-Yoke systems help reduce defects, increase product quality, minimize rework and scrap, enhance worker efficiency, and ultimately lead to cost savings.
Both the Andon and Poka-Yoke systems are integral parts of lean manufacturing and continuous improvement efforts, as they promote the early identification and prevention of problems, leading to more efficient and error-free production processes.