Kanban and Hijunka

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Kanban and Hijunka are the next topics covered in the DMAIC Improve phase! Organizations in today’s fast-paced business world are continuously seeking for methods to increase efficiency, cut expenses, and improve the bottom line. Implementing Lean Six Sigma techniques is one of the most effective ways to attain these objectives. Kanban and Hijunka are two effective strategies for achieving these objectives by smoothing out production variances, lowering inventory, and enhancing efficiency.

 

Table of Contents

Kanban

What is Kanban

Kanban is a Lean Six Sigma system for managing the flow of materials and work in a manufacturing or production setting. Kanban is a Japanese word that translates to “signboard” or “billboard.” When a fresh batch of product is needed, the Kanban method uses visual cues such as cards or boards to indicate when it is time to manufacture it. This contributes to the efficiency of the manufacturing process and the availability of supplies when they are required.Kanban_board-elements

Kanban’s major purpose is to ensure that the appropriate number of materials and goods are created at the appropriate time and delivered to the appropriate location. This is accomplished by establishing a “pull” system, in which production is based on real consumer demand, as opposed to a “push” system, in which output is based on predicted demand.

Each stage of the manufacturing process is represented by a Kanban card or board in a Kanban system. These cards or boards are used to indicate when a fresh batch of product is required to be manufactured, and they are moved along the production line as the product is manufactured. When a card or board reaches the end of the line, a fresh batch of merchandise is produced.

Kanban cards or boards can help to enhance productivity in a variety of ways. For starters, it ensures that the manufacturing process is constantly operating at full capacity, with no overproduction or stockouts. This reduces waste and increases efficiency. Second, it assists in ensuring that resources are always available when needed, which can help to minimise lead times and enhance quality.

Kanban can also be used to track inventory levels and detect bottlenecks in the manufacturing process. The visual clues provided by Kanban cards or boards make it simple to determine where materials are placed in the manufacturing process and when they are required. This can aid in identifying areas where efficiency and waste reduction might be improved.

To summarise, Kanban is a Lean Six Sigma system for managing the flow of materials and activity in a manufacturing or production setting. It employs visual indicators, such as cards or boards, to indicate when a fresh batch of product is required, and it aids in ensuring that the appropriate number of materials and goods are created at the appropriate time and delivered to the appropriate location. It can aid in increasing efficiency, decreasing lead times, and improving quality.

 

The Role of Kanban in DMAIC

Kanban plays a function in the DMAIC process during the Improve and Control phases.

Kanban can be used as a method to manage the flow of materials and work in a manufacturing or production environment during the Improve phase. It aids in ensuring that the appropriate amount of materials and goods are generated at the appropriate time and delivered to the appropriate location. This aids in inventory reduction and efficiency.

Kanban is utilised in the Control phase to ensure that the improvements established during the Improve phase are sustained throughout time. Kanban cards or boards provide visual indicators that make it simple to check inventory levels and identify bottlenecks in the manufacturing process, which can aid in identifying areas where improvements can be made to boost efficiency and minimise waste. Kanban can help to ensure that the improvements gained during the Improve phase are sustained over time by continuously monitoring the process and making modifications as needed.

To summarise, Kanban is a technology that may be utilised in the Enhance phase of the DMAIC process to improve material and task flow, reduce inventory, and increase efficiency. It is also used in the Control phase to track the process, check the inventory, and make adjustments as needed to sustain the improvements over time.

 

An Example of Kanban used in Manufacturing

Kanban was implemented in a production context at a business that makes fittings and other components for the construction sector. The factory was having issues with extended lead times and large inventory levels. The demand for fittings and other components varied substantially from week to week, making it difficult to forecast the amount of components required.

To overcome these issues, the manufacturer used Kanban in their manufacturing process. They began by researching client demand to better understand the changes in demand. Based on this data, they developed a demand-matching Kanban system. Each stage of the manufacturing process was represented by a Kanban card, which was moved along the production line as the components were manufactured. When a card reached the end of the line, it started the manufacturing of a fresh batch of components.

The usage of Kanban cards aided in the improvement of productivity in numerous ways. For starters, it helped to ensure that the manufacturing process was always operating at full capacity, with no overproduction or stockouts. This assisted in reducing waste and increasing efficiency. Second, it contributed to ensuring that materials were always available when needed, which can help to cut lead times and enhance quality.

The factory used Kanban to track inventory levels and detect bottlenecks in the manufacturing process, in addition to managing the production process. The visual clues provided by the Kanban cards made it simple to determine where components were placed in the manufacturing process and when they were required. This can help in identifying areas where efficiency and waste reduction might be improved.

The factory was able to reduce inventory, improve quality, and increase productivity as a result of these adjustments. Lead times were lowered, and expenses were cut. The plant was able to produce fittings and other components more effectively and meet client demand.

 

Hijunka

What is Hijunka

Hijunka is a Lean Six Sigma technique for levelling off production by smoothing out differences in demand and production. It is a method of achieving a consistent production flow by balancing the production schedule based on client demand. Hijunka’s goal is to limit the number of times the manufacturing process must be stopped and restarted, which can result in longer lead times and greater costs.

Hijunka is founded on the assumption that demand for products or services is not consistent in many manufacturing and production contexts. It can change dramatically from day to day, week to week, or even hour to hour. This can result in issues such as overproduction, excess inventory, and lengthy wait times.

Hijunka is used to address these problems by levelling out production in order to match demand. This is accomplished by dividing the manufacturing process into smaller portions known as “hijunka boxes,” which can be scheduled and manufactured individually. This enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

Hijunka is implemented by developing a production schedule that takes both consumers’ needs and production capacity into account. The schedule is then divided into smaller parts, known as Hijunka boxes, which can be prepared independently. This enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

Hijunka’s purpose is to reduce inventory, improve quality, and increase efficiency by ensuring that output matches demand. It offers for greater flexibility in responding to changes in demand and avoids the need for big batches of production, which can contribute to longer lead times and higher prices. Hijunka can help decrease waste, improve quality, and increase efficiency by levelling out production.

In short, Hijunka is a Lean Six Sigma technique that helps manufacturing and production environments to level out production and match it to client demand. It helps to minimise inventory, enhance quality, and increase efficiency by breaking down the production process into smaller chunks known as “hijunka boxes,” which may be scheduled and produced individually. It makes the manufacturing process possible.

In short, Hijunka is a Lean Six Sigma technique for levelling out production and matching it to customer demand in manufacturing and production contexts. By breaking down the production process into smaller portions known as “hijunka boxes,” which may be scheduled and produced individually, it helps to minimise inventory, enhance quality, and increase efficiency. It enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

 

The role of Hijunka in DMAIC

The role of Hijunka in the DMAIC process is in the Improve phase.

The problem or opportunity to improve is recognised and specified during the Define phase. Data is collected and evaluated in the Measure phase to understand the present performance of the process and find areas for improvement. The data is analysed in the Analyze step to determine the root cause of the problem.

Hijunka can be used to level out production and match it to customer demand during the Improve phase. By breaking down the production process into smaller portions known as “hijunka boxes,” which may be produced individually, this helps to eliminate one of the eight wastes of excess inventory, enhance quality, and increase efficiency. This enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

Hijunka can be used to level out production and match it to customer demand during the Improve phase. By breaking down the production process into smaller portions known as “hijunka boxes,” which may be produced individually, this helps to eliminate one of the eight wastes of excess inventory, enhance quality, and increase efficiency. This enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

 

How to use Hijunka?

Hijunka can be applied in various steps in a manufacturing or industrial environment:

Identify the process to be improved: The first step in applying Hijunka is to identify the process that will be improved. This could be a single production line, a department, or the entire company.

Study demand: The next stage is to analyse client demand in order to understand how demand varies. This data will be utilised to develop a production schedule that corresponds to demand.

Create a production schedule: A production schedule is developed based on the demand analysis. The schedule is divided into smaller parts called “hijunka boxes,” which can be prepared independently. This enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

Create a production schedule: A production schedule is developed based on the demand analysis. The schedule is divided into smaller parts called “hijunka boxes,” which can be prepared independently. This enables the manufacturing process to be stopped and restarted in a more controlled and efficient manner, decreasing waste and increasing efficiency.

Implement Kanban: It is advantageous to use Kanban when implementing Hijunka. Kanban is a system that employs visual indicators, such as cards or boards, to indicate when a new batch of merchandise is required. This provides for a more efficient flow of materials and aids in the maintenance of the production schedule. It is advantageous to use Kanban when implementing Hijunka. Kanban is a system that employs visual indicators, such as cards or boards, to indicate when a new batch of merchandise is required. This provides for a more efficient flow of materials and aids in the maintenance of the production schedule.

Monitor and measure: After implementing the Hijunka and Kanban systems, it is critical to monitor and measure their effectiveness. Tracking key performance indicators (KPIs) like as inventory levels, lead times, and production efficiency can help with this.

Continual improvement: Finally, it is important to continuously improve the Hijunka and Kanban systems by analysing data and making adjustments as necessary. This will help to guarantee that the systems continue to function properly over time.

It is vital to note that the implementation of Hijunka necessitates a culture shift in the business, and it is critical to involve all stakeholders in the process and teach staff to operate with the new system.

 

An Example of Kanban used in Manufacturing

A factory that manufactures camera modules is an example of where Hijunka has been employed in an organisation that manufactures small parts for cellphones. Long lead times, excess inventory, and high expenses were all issues at the factory. The demand for camera modules fluctuated substantially from month to month, making it difficult to forecast the quantity of camera modules required.

To overcome these issues, the plant incorporated Hijunka into the manufacturing process. They began by evaluating client demand in order to comprehend the differences in demand. Based on this information, they devised a manufacturing schedule that corresponded to demand. The schedule was divided into smaller portions known as “hijunka boxes,” each of which was produced separately.

The plant was able to reduce inventory, improve quality, and increase productivity as a result of these adjustments. Lead times were reduced.

Based on expected demand, the manufacturer might build a specific number of camera modules for high-end smartphones one day, a certain number of camera modules for mid-range smartphones the next day, and so on. This enabled them to adapt to changes in demand more rapidly and avoid overproduction or stockouts.

The plant also used Kanban in addition to Hijunka. Kanban cards were utilised to signal when a fresh batch of camera modules needed to be created, which aided in keeping the production schedule on track. This ensured that the manufacturing process could be stopped and restarted in a more regulated and efficient manner, minimising waste and increasing efficiency.

The plant was able to reduce inventory, improve quality, and increase productivity as a result of these adjustments. Lead times were reduced.

 

Conclusion

In conclusion, Kanban and Hijunka are powerful tools that can be used to improve efficiency, reduce inventory, and improve quality in manufacturing and production environments. Organizations can efficiently level out production deviations and match it with customer demand by applying these approaches in the Improve phase of the DMAIC process. Furthermore, by continuously monitoring the process and making appropriate adjustments, the usage of Kanban in the Control phase helps to sustain these improvements over time. The application of these Lean Six Sigma approaches can result in considerable improvements in overall performance and bottom-line results.

 

What's Next?

We have now covered some of the key tools that you would come across at Yellow Belt level of Lean Six Sigma, next we will look at Cost Benefit Analysis (CBA) to evaluate the costs and benefits of projects