Kanban siom
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Transcript of Kanban siom
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A.V. Sri Harsha
Amit Kumar
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Introduction
Kanban is a Japanese word which literally means “sign board” or “billboard”.
It was developed by Taiichi Ohno, at Toyota, in 1953, to find a system to improve and maintain a high level of production.
It is a concept related to lean and just-in-time (JIT) production.
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It is a scheduling system that tells you “what to produce”, “when to produce”, and “how much to produce”.
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What Kanbans Do Controls the amount of raw material amounts and of
materials in Work In Process (WIP).
Smooth's out the entire material flow, if sized properly.
Tells when and where there is a problem in the process.
Assures there is always just enough material on hand to make what is needed.
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Create Information System that Supports Lean Principles
Pull of Product Based on Usage
Lower Inventory / Reduced Lead-Time
The Objective
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Types of Kanbans
Raw Material Kanban – tells suppliers when to send how much of particular item to a particular place.
WIP Kanban – determines the amount of Work In Process that can be kept between any two operations in a process.
Finished Goods Kanban – determines the amount of a product to be kept on hand at any given time. Removal of material from the Finished Goods Kanban acts as a signal for more of that product to be manufactured.
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Types of Kanban Signals A calculated amount of material kept in a designated
space, such as a bin on a workbench or on the floor.
A card that is used to tell the amount of material to be made or ordered.
The markings on a bin that determines when more material needs to be ordered or made.
Any other clear visual signal that indicates it is time to get more material.
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How Kanban Works
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IN PROCESS
Feature to develop Tasks in queue
Tasks in progress Tasks complete
Feature complete
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Flow of Kanban Signals
External
Supplier
Internal
Raw
Materials
Store needed product
Internal
Production
Work
Unit needed product
Plant
Finished
Goods
Store needed product
External
Customer
needed product
Supplier Signal Move Signal Customer Signal
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Raw Materials Kanban All of the RM used to manufacture a particular
product are identified as well as the number used in each product.
The goal is to order at the point when the number of parts on hand reach the amount that will be used up during the time it takes to order and get the new needed parts delivered (Lead time).
Usually, because of variability in the lead time, the amount of reordered parts is a bit more than the amount of parts needed to cover order lead time.
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Raw Material Kanban Card
Kanban Signal Number Supplier Name
Part Number Quantity Card No.
Customer
Store Address Work Unit Address
Part Name
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Work In Process Kanban Materials flow demands a very well balanced manufacturing
line, meaning that each process station uses approximately the same amount of time to do the necessary work.
First, the process times at each station are calculated.
Then, when one station has to take significantly more time to do its work than previous stations, Kanbans are put in to keep material batching to a minimum.
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WIP Kanban Card WORK UNIT ADDRESS STORE ADDRESS
SUPPLIER NAME Kanban Signal No. WORK UNIT NAME
PART No. QUANTITY CARD #
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Finished Goods Kanban
The demand for a particular product is tracked over time.
Based on the demand, the safety stock is calculated, (e.g. a day or a week).
Based upon the demand, it is then calculated how many of the product needs to be made per day.
Kanbans are set up in the shipping area with the amount of product that has been determined as required safety stock.
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Supplier
Kanban Signal No.
Part No.
Storage Location
Quantity Supplier No.
Card No.
Container Type
Description
Storage Address
Finished Goods Kanban Card
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Advantages Elimination of Waste
Overproduction Material movement Inventory
Grows the Business Internal and external. Strengthens the resources.
Improves the Competitive Position Continually strives for perfection. Reduces the cost. Eliminate wastes in operations.
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Additional Advantages Support Visual Control
Are we behind?
What do I produce first?
What is my inventory situation?
Continuous Improvement
Large inventories hide problems
Facilitate continuous improvement
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Thank You..