Practically, this is usually a waste of time. Theoretically, you could follow the worker all day long. Do not skip any parts, even if it becomes messy (unless the worker needs a toilet break). This can also include times and will come in handy later on for the improvement. Whenever I observe him doing something worth remembering, as, for example, searching, making mistakes, or doing other types of waste, I also make a quick note on the layout. You can also add arrows to indicate directions. I usually use a colored pen on an ideally not colored layout (just use a gray-scale printer). While he walks through the factory, mark his route with a pen on a layout of the factory. When you start, note the start time on the diagram.
In sum, observe the work of people that you want to optimize.ĭuring a typical work day, meet with that person and follow him around on his normal work. On the other hand, if you are more interested in optimizing the material transport, then you should look at one of the people transporting goods. If you are worried about the efficiency of a machine operator and noticed that his task includes some walking, you may observe a typical machine operator for these machines.
Whom to observe depends on the question and scope of the problem you want to solve. Naturally, you should inform and, if necessary, get consensus of the people observed and possibly the works council or union representatives. Other lean sources also suggest a stopwatch and a measuring wheel, although I am usually fine with my normal watch and a distance estimate. All you need is a layout, a pen, someone observing, and someone observed. It even works for automated guided vehicles (AGVs), even though, in lean wisdom, waiting times of people are much worse than waiting times of machines. Spaghetti diagrams are most useful for determining the route a person has traveled by either walking or driving (e.g., with a forklift).
#SPAGHETTI MODELS HOW TO#
How to Make a Spaghetti Diagram Spaghetti Diagram for a Person Example of a Spaghetti Diagram The benefit can be either faster delivery or the same delivery with less effort. This allows you to then analyze and optimize the distances. Obviously, this works best for an repetitive environment where the work repeats in the same or similar style multiple times. Hence, a spaghetti diagram can help you if you want to reduce the distance traveled by either parts or people. Why Do I Need a Spaghetti Diagram?Ī spaghetti diagram, also known as spaghetti chart, spaghetti model, or spaghetti plot, is a particular tool for determining the distance traveled by (usually) man or (in some cases) material. In this post I will explain the details and give some tips and tricks on how to make a good spaghetti diagram. The name comes from the result looking like a plate of spaghetti. A spaghetti diagram is a quick and easy way to track distances of parts and people on the shop floor.
0 kommentar(er)
