What is Jidoka?
Jidoka was invented in 1896 and was used to stop the shuttle of an automatic loom in a case where a thread broke. Not only did this reduce the number of defects when threading, it allowed operators to operate multiple looms at once instead than having to watch only one in case something went wrong. It is essentially automation with a human element.
What are the principles of Jidoka?
The principles can be broken down into four steps:
- Discover an abnormality or problem.
- Stop the operation process.
- Fix the problem at hand.
- Discover the root cause to prevent future issues.
The primary innovation Jidoka brought to lean manufacturing is the idea of examining a manufacturing issue in the middle of the process rather than at the end. Inspecting throughout the manufacturing process can play a key role in preventing defects and fixing problems before they cause significant damage.
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