Introduction: Lean thought has a huge impact on modern manufacturing , and the improvement of corporate performance cannot be separated from the innovation of concepts of cost and efficiency. So what is the difference between the concept of cost and efficiency in lean production and the traditional view? This article will try to explain it from several aspects.
1. The efficiency of false efficiency and true efficiency
has only a difference between true and false? Let's take a look from an example.
The donkey tied to the pillar and the donkey pulling the mill are both moving, consuming the same energy, but what about the result?
Donkeys tied to a pillar have no output that is useful for human output, so the efficiency is zero. We call it false efficiency. What the donkey in the mill does is work hard and has effective output, so the efficiency is real.
In daily work, some people often complain that they are busy at work and there are too many things, but then are they really busy or fake? You can’t just look at the surface when you look at things. The concept in
Lean is: if you need to move, you will be most efficient at stopping without moving.
2. Is the cost of large batches low or small batches low?
There is a "smart person" who caught a cold one day went to the hospital to buy medicine. The ones you buy are one yuan per piece, and the ones you buy are two yuan per piece. The effective period of the medicine is 3 months, and it will be cured after taking six tablets for two days.
Assuming he valued the unit price, he bought a bottle of 100 tablets of cold medicine, which cost 100 yuan. The next time he caught a cold four months later, he spent 100 yuan to treat a cold. If you buy in small batches according to your needs, it will cost only 12 yuan in total to buy six pills.
In material procurement, we are often confused by unit prices and forget the actual cost. Through this example, we can see the difference in cost between large batches and small batches. Among the lean, small batch on-demand procurement costs are the lowest (of course, the rationalization of packaging and transportation methods must also be considered comprehensively).
3. Overall efficiency and individual efficiency
Traditional management method: In order to speed up the production speed of each process, employees can operate a machine and work quickly, and use the method of placing a salary for incentives.
On the surface, it seems that everyone is working hard, but in fact, the number of products available is only the number produced by the slowest people.
Are people with fast manufacturing efficiency in the overall situation? The answer is no. Overall efficiency is much more important than individual efficiency.
Therefore, in lean, it pays great attention to the balance of production capacity and the elimination of bottlenecks.
4. The automation efficiency has improved, why didn’t you make money
The facts are often the opposite: we found that some enterprises have improved local efficiency and are losing money in their automation transformation. Why? The flexibility of production line automation is not considered, the switching is slower and the inventory is higher. The purpose of the company's operation is to make profits, not to make products.
automation transformation should pay attention to the flexibility of equipment (it can easily complete multiple varieties of switching), and it is necessary to analyze the investment return of automation transformation, and pay attention to actual benefits through surface efficiency and attention to actual benefits.
5. Strive does not equal efficiency
At the manufacturing site, employees' actions are divided into value creation and not value creation. The practice of increasing labor intensity and extending labor time cannot improve labor efficiency .www.hlean.com
Work hard to improve and eliminate work that does not create value is a humanized management performance. Only in this way can efficiency be improved.
improves efficiency and strengthens labor.
In summary, the core of lean lies in reducing costs, efficient coordination, flexible manufacturing, less man-made operations, and stable quality, which are concentrated in the balanced and accurate flow of enterprises, bringing about the improvement of turnover rate and the reduction of inventory cost . Shortening of process cycle and reducing inventory should be used as the core assessment indicators.
At the same time, combined with digital production management software, the above-mentioned collaboration can be made more accurate, more efficient and transparent, improve processes and better solidify improvements, and better reflect indicators.
