Pull production using Kanban is one of the major achievements of the Toyota Production System and hence lean manufacturing. The work in progress is limited by the number of Kanban. Overproduction is avoided by producing only if a part is taken out of the supermarket and the Kanban card is returned to the start of production. However, this Kanban system works only if the Kanban returns to the start of production. Losing Kanban means not reproducing goods sold. In this post I would like to talk about different methods to prevent the loss of Kanban, including different Kanban types.
Lean Tools
How to Manage Your Lean Projects – Prioritize
In our first post of this series, we discussed how to avoid void work overload using a project management board. The key was to limit the number of active projects. Start a new project only when a previous one is completed. This second post now details which project to start next. Here I want to emphasize the importance of prioritization. I describe some simple tools on how to quickly determine the most important task at hand.
How to Manage Your Lean Projects – Number of Active Projects
Let’s face it – you have more things to do than you can reasonably do in the available time. A constant stream of tasks or problems are waiting for a lean solution. This two-post series wants to help you with that. In this first post, we will discuss how to avoid work overload using a simple project management board. A second post will tell you how to Manage Your Lean Projects – Prioritize.
SMED – Creative Quick Changeover Exercises and Training
One popular approach to battle waste is to streamline changeovers. Changing machines from one setup to another is often a time-consuming exercise. Hence, in lean manufacturing, reducing changeover times is a well-known method for improving efficiency. This post will show a number of examples where these quick changeovers (also known as SMED) can be practiced in an unusual environment.
The History of Quick Changeover (SMED)
In the previous post, I explained the basics of a quick changeover. In this post, I will go through the history of quick changeovers (also known as SMED). It is quite interesting to learn how things have developed during the twentieth century. The next post will look at different, unusual ways to teach SMED.
Quick Changeover Basics – SMED
One popular approach to battle waste is to streamline changeovers. Changing machines from one set-up to another is often a time-consuming exercise. Hence, in lean manufacturing, reducing changeover times is a well-known method for improving efficiency. In this post, we will go through the basic approach of improving changeover time, also known as quick changeover or single minute exchange of die (SMED).
Poka Yoke Training – Simple Mistake Proofing Game
Mistake proofing (or Poka Yoke in Japanese) is one important way to avoid waste in lean manufacturing. In this post, I will present a small game that can be used to teach the basics of poka yoke easily and quickly. The game is based on Kinder Surprise eggs made by Ferrero, also known as a Kinder Egg. These eggs are available almost anywhere – except in the US, in which case there are some alternatives.
On the Lean Guru Shigeo Shingo
Shigeo Shingo is a name that everyone in the United States lean community knows. He is sometimes considered “the world’s leading expert on manufacturing practices and the Toyota Production System,” an “engineering genius,” and the foremost guru of lean production. Some sources even claim he invented the Toyota Production System and taught Taiichi Ohno. Shingo greatly helped to popularize the idea of Lean in the USA. However, he invented much less than what is sometimes claimed, and there is also quite some disagreement in the lean community on this. Let’s have a look at his life and his achievements.