‘The next process is the customer.’ ‘The next process is the customer.’ Kaoru Ishikawa
A JIT system means that incoming goods arrive, proceed directly to equipment for processing, become work-in-process, and through value-added activities become finished goods just-in-time for the customer to pick up. A JIT system means that incoming goods arrive, proceed directly to equipment for processing, become work-in-process, and through value-added activities become finished goods just-in-time for the customer to pick up.
Just-in-time requires three basic components: Just-in-time requires three basic components:A Pull systemAdherence to Takt times
Pull systems Pull systems- Pull systems are manufacturing systems that require that products to be produced only when needed by a customer.
Continuous flow processing Continuous flow processing- Continuous flow processing focuses on one-piece-at-a-time production.
- Stagnation of work-in-process inventory in and between processes must be eliminated.
Takt time - the rate a process must produce an item in order to meet customer demand.
- Takt time is defined as:
Takt time = -------------------------------------------- Customer demand rate per day
Seven sources of waste were identified by Taiichi Ohno, also of Toyota Motor Company: Seven sources of waste were identified by Taiichi Ohno, also of Toyota Motor Company: Some people have modified this list to include intellect waste.
Kanban Kanban- display card in Japanese
- a sign, card, or label, that communicates what is needed and when.
Kanban (Pull Inventory Management) Kanban (Pull Inventory Management)- Kanban improves process management by focusing on visual control of the process.
- Kanban cards tell the worker what must be produced as well as what has been produced.
- Workers can not do more than the Kanban cards tell them to.
Jidoka - the Japanese word for autonomation.
- Jidoka is one of the two main pillars of the Toyota Production system.
- When a Jidoka system is present, machines and equipment are designed to stop automatically when a problem is detected. Any operator on the line also has the power to stop production.
Jidoka Jidoka- Jidoka systems alert the worker to when a defective item is produced or a machine malfunction has occurred .
- This allows the problem to be dealt with immediately, preventing the production and passing of defects.
- Problems and the defects they cause can be more quickly localized, isolated, and corrected
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