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The A3 report is the communication medium of A3 management. The A3 report takes its name from the size of the paper, “A3” or 11 x 17 inch, that it is generally written or printed on. The large size of the A3 report lets users see, at a glance, a Read more…
Efficiency, in the strictest sense of the definition is being able to produce something with the minimum amount of time and resources. Efficiency in Lean comes with a few cautions. The first warning regarding efficiency in Lean is to make sure you are using the term the same way that Read more…
Automatic machine cycle time, sometimes referred to as automatic machine time, is the time a machine spends processing a single part without an operator’s interaction. Automatic machine cycle time is critical to the concept of jidoka, or separating people from machines. The productivity benefits of automation are obvious. An operator Read more…
Overcoming Resistance to Change in a Lean Company The term “resistance to change” is commonly used in discussions about Lean. It simply means that people are set in their ways, and often don’t want to modify their routines. Surprisingly, this change resistance doesn’t just occur when people who like their Read more…
In its original definition, Lean is a form of continuous improvement that springs from the Toyota Production System (TPS). The term “Lean” was popularized in the landmark book, Lean Thinking. It focuses on improving flow, with a heavy emphasis on reducing inventory. Nowadays, though, there is also a broader definition. Read more…
Many Lean terms can trace their origins to Japan. Muda is one of those terms. It really translates to “wasteful activity”, but in common practice most people equate muda to waste. Since one of Lean’s main goals is reducing waste to improve flow, it is no surprise that muda has Read more…
The most common definition of jidoka is “autonomation”. It is Japanese in origin, as are many specialized words in Lean. The term traces its roots back to the early 1900’s at Toyota in Japan, then a textile manufacturing company. Sakichi Toyoda, an inventor and the founder of Toyota, developed a Read more…
Heijunka is the Japanese term for level-loading or production leveling. It is intended to smooth out the peaks and valleys of customer demand into something flatter to create conditions that make standardization easier. It also stabilizes the product mix to support Standard Work. Heijunka, pronounced High-June-Kuh, is a workaround for Read more…
A cause and effect diagram is a structured, graphical representation of the possible causes to a given effect. The purpose of the CE diagram is to provide clarity about the nature of problems. Complicated problems tend to have many contributing factors. The relationships of these potential causes jump out when Read more…
In general, batch manufacturing (the opposite of a cellular manufacturing system) is oriented around a process. You might have a cutting group, a welding group, a grinding group, etc. Each workgroup is structured based on what they do. These clusters of machines produce long runs of a product according to Read more…
DMAIC is an acronym for Define, Measure, Analyze, Improve, Control. It provides a systematic way to approach a problem. Using the DMAIC methodology to structure a problem-solving effort helps prevent skipping steps, which can lead to poor solutions. While is seems foreign at first, when you look more closely at Read more…
An andon light is one of the most common forms of visual management that is used in Lean. It is a staple in the bag of Lean tools because it is highly effective at keeping operations running smoothly. In Lean, the term “andon” most often refers to a signaling system Read more…