I. The differences between the two
(I) Differences in optimization scope
The mass production mode is like a resource allocation journey guided by the market as a compass. It regards market orientation as the guiding principle and is committed to optimizing resource allocation. In this journey, each enterprise is like an independent castle, with financial relationships serving as its strong city walls, focusing on optimizing its own internal management. An enterprise is like a frugal housekeeper, carefully arranging all kinds of affairs within its own castle, striving to achieve high - efficiency and stability in internal operations.
Lean production, on the other hand, is like a large - scale connection of the supply chain centered around the product production process. It uses the product production process as a clear thread to closely organize the closely - related supply chain. Its focus is not limited to the interior of a single enterprise, but aims at the grand optimization of the entire large - scale production system. Just like conducting a precise symphony, it enables all links in the supply chain to play in harmony and achieve the efficient operation of the entire production system.
(II) Disagreements in attitudes towards inventory
Inventory management in the mass production mode is like a game against uncertain factors. On the production stage, there are many uncertain factors, such as equipment failures and unstable supplies. These are like risks hidden in the dark. To deal with these risks, appropriate inventory is like a buffer barrier. It can ease the contradictions between various production links, avoid the impact of risks, and ensure that production continues like an ever - flowing river. This inventory management and optimization strategy formed based on external risks is like a battle map drawn according to statistical data. It pursues the optimization of the logistics subsystem and enables the orderly flow of logistics within the enterprise.
Lean production mode views inventory from a completely different perspective. It regards all inventory in production as the embodiment of "waste". Its starting point is the entire production system, rather than simply treating "risk" as an inevitable external condition. In its view, inventory is like a huge fig leaf that covers up the defects in the production system. On the one hand, it emphasizes that the supply should provide reliable support for production like a precise clock; on the other hand, it has a persistent pursuit of zero inventory. By continuously reducing inventory, it's like peeling off the fig leaf layer by layer, gradually exposing the contradictions in the basic production links and making improvements, and ultimately eliminating the "waste" caused by inventory. Based on this concept, lean production has shouted out the resounding slogan of "eliminating all waste".
(III) Differences in the business control concept
The employment system of the traditional mass production mode is like a strictly hierarchical pyramid, built on the "employment" relationship between the two parties. In the field of business management, it emphasizes the principle of division of labor, just like splitting a complex jigsaw puzzle into small pieces, allowing each employee to focus on their own piece to achieve high efficiency in individual work. At the same time, strict business audits are like a strict supervisor, promoting and ensuring the work quality of employees and preventing the negative effects of individual work on the enterprise.
Lean production originated in Japan and is deeply influenced by Eastern culture. When it comes to professional division of labor, it is more like a collaborative dance of a team. It emphasizes mutual cooperation, making the coordination among employees as harmonious as dance steps. At the same time, it pursues the streamlining of business processes, just like pruning a messy tree, removing unnecessary verification work and eliminating "waste" in business.
(IV) Differences in quality concepts
The traditional production method regards a certain amount of defective products as an inevitable by - product in the operation process of this large - scale production machine. On the basis of ensuring continuous production, it is like a shrewd businessman, weighing the inspection cost against the waste caused by defective products. Through this weighing, it optimizes the quality inspection control points to achieve a relative balance.
Lean production is based on the views of organizational decentralization and human collaboration. It firmly believes that it is entirely feasible to enable producers themselves to ensure the absolute reliability of product quality like a loyal guard without sacrificing production continuity. Its core idea is that the causes of those quality problems that seem to occur probabilistically are not random in themselves. Just as a detective searches for the truth of a case, it aims to "eliminate all waste caused by defective products" by eliminating the production links that cause quality problems.
(V) Different attitudes towards people
The mass production method constructs a strict hierarchical relationship in management, just like a steep mountain, with employees at different levels. The requirements for employees are like shackles of orders, demanding that they strictly complete the tasks assigned by their superiors. In this management model, people are regarded as "equipment" attached to their positions and can only operate according to the established procedures, lacking autonomy.
Lean production endows people with more initiative. It emphasizes that individuals should intervene in the production process like active participants and try their best to give full play to human initiative. At the same time, it also attaches importance to coordination, just like a harmonious concert where various musical instruments cooperate with each other. The evaluation of individual employees is also based on long - term performance, just like a long - distance running race, where the overall performance of the contestants is valued. This method regards employees more as important members of the enterprise group rather than cold machines.
II. Characteristics of lean production management methods
(I) Pull-type just-in-time production
Pull-type just-in-time production is like a production symphony guided by the demands of end-users. It takes the demands of end-users as the starting point of production, just as a performance takes the audience's expectations as the signal to begin. It emphasizes the balance of logistics and pursues the ideal state of zero inventory. It requires that the parts processed in the previous process can immediately enter the next process, just like the baton in a relay race, making the production process like a smooth assembly line.
The production line is organized by relying on a magical tool - Kanban. Kanban is like an information messenger. Its forms are diverse, but the key lies in its ability to accurately convey the information of the demand from the next process to the previous process. The rhythm in production can be intervened and controlled manually, just like a conductor controlling the rhythm of music. However, more importantly, it is necessary to ensure the balance of logistics in production. For each process, it means ensuring the just - in - time supply to the subsequent processes, making production like a precise dance where every movement is just right.
Due to the adoption of pull-type production, the planning and scheduling in production are like a distributed battle, which is essentially completed by each production unit on its own. In form, it does not adopt centralized planning, but in the operation process, the coordination among production units is as necessary as the coordinated operations among different military forces.
(II) Total Quality Management
Total quality management emphasizes that quality is produced, not inspected. It is like a solid building, with the quality management in production ensuring the final quality. During the production process, the inspection and control of quality are like a vigilant sentinel, carried out at every process. It focuses on cultivating the quality awareness of each employee, enabling employees to be like a meticulous craftsman at every process, paying attention to quality inspection and control, and ensuring that quality problems can be detected in a timely manner.
If quality problems are found during the production process, it's like discovering cracks in the foundation of a building. Depending on the situation, production can be immediately stopped until the problems are resolved, thus ensuring that no ineffective processing is carried out on non - conforming products. For the quality problems that occur, a team of relevant technical and production personnel is generally organized. It's like an elite medical team, working together to solve the problems as soon as possible.
(III) Teamwork
The teamwork method is like a dynamic team sport. In this team, each employee is not only a soldier who executes the orders from superiors. More importantly, they actively participate and play a role in decision-making and assisting in decision-making. The principle of organizing teams is not entirely divided according to the administrative organization, but mainly based on the business relationships, just like forming a sports team according to the players' specialties and positions.
Team members are required to be proficient in one area and have multiple skills, just like an all - around athlete. They are expected to be relatively familiar with the work of other staff members in the team to ensure that the work coordination proceeds smoothly like a well - coordinated performance. The evaluation of team members' work performance is influenced by the internal evaluation of the team, which is closely related to Japan's unique personnel system.
The basic atmosphere of teamwork is trust, which is like a bridge connecting the relationships among team members. It mainly relies on long - term supervision and control, avoiding cumbersome audits of each step of work and improving work efficiency. The organization of the team is changeable, just like a flexible army. Different teams are established for different things, and the same person may belong to different teams.
(IV) Concurrent Engineering
During the design and development of a product, concurrent engineering is like a multi - threaded battle. It combines conceptual design, structural design, process design, and final requirements to ensure that the product is completed at the fastest speed and with the required quality. All tasks are completed by relevant project teams. In the process, team members are like a group of independent yet collaborative explorers. They arrange their own work respectively, but can provide feedback on information regularly or at any time, just like transmitting intelligence, and coordinate to solve the emerging problems.
Rely on appropriate information system tools, just like using advanced maps and navigation devices, to provide feedback and coordinate the progress of the entire project. Utilize modern CIM (Computer Integrated Manufacturing) technology to assist in the parallelization of the project process during the product development and research phase, enabling the project to move forward rapidly like a high - speed train.