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Manufacturing Technology Insights | Saturday, January 28, 2023
The principles of lean manufacturing include identifying value, mapping the value stream, creating flow, establishing pull, and seeking perfection.
FREMONT, CA: Lean manufacturing aims to eliminate waste and inefficiencies in manufacturing operations. The lean thinking method, also known as lean manufacturing, is now being used in countless businesses to increase production and profits, reduce costs, and improve quality. As a result of the proven success of lean manufacturing principles, manufacturing companies throughout the world have adopted the method in order to compete more effectively with lower-cost firms.
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The history of Lean Manufacturing: Henry Ford introduced lean manufacturing on a large scale. Ford created methods that would increase production and product continuity by optimizing production efficiency in his factories. His downfall, however, was creating a variety of products. Using many of Ford's processes, Eiji Toyoda developed a method that improved production while also providing the variety consumers wanted. The Toyota Production System was shaped by the lean manufacturing principles coined by Toyoda and Taiichi Ono.
Below are the five principles of lean manufacturing:
Value identification: Identifying the customer's value and how the products meet those values is the first principle of lean manufacturing. Manufacturers should avoid wasting time, money, and labor on product aspects that customers don't need or want. Eliminating these wasteful steps results in a product and process that satisfy customers only.
Value stream mapping: In the next step, the identification of the value of the product throughout its entire lifecycle is essential. A product's value is mapped from its design to its use to its disposal. By doing so, organizations can better understand a product's value and minimize steps that don't add value.
Flow creation: In this step, production floor operations are optimized to eliminate holdups. The flow of a product should be uninterrupted from production to shipping. Analyzing how people, equipment, and materials are used to identify ways to optimize the shop floor is essential. By improving flow, production time, inventory size, and material handling are reduced.
Pulling together: It focuses on using a pull-based production system instead of a push-based one. When there is no order, push-based systems purchase supplies and go through production anyway. This results in large inventories and a lot of work in progress. A pull system, on the other hand, begins with a product order. Materials are purchased, and work is performed according to orders to reduce inventory, increase output and eliminate overproduction and errors. Pull methods also prevent inventory from expiring.
Perfection is the goal: Although seeking perfection may seem straightforward, it can be one of the most difficult principles to follow. In order to achieve perfection, organizations must constantly improve. It may also require a culture shift throughout the entire organization. By focusing on small but valuable changes, this Kaizen philosophy can help companies create a culture where employees strive for perfection instead of accepting the status quo. Having perfection as a priority in all areas increases efficiency, productivity, and quality over time.
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