The intelligent transformation of traditional factories first requires achieving intelligent processing, enabling automated production lines. Secondly, it necessitates intelligent management in collaborative work and production, ensuring that production lines not only automate processing but also production. Finally, driven by intelligent processing and management, the factory should achieve business intelligence, enhancing its overall competitiveness. The construction of a smart factory can be understood through three layers: ERP, MES, and PCS. These three layers are interconnected, mutually restrictive, and mutually reinforcing; the construction of a smart factory involves intelligently building upon these three layers.
The construction of a smart factory mainly focuses on the construction of MES, and uses this as a foundation to coordinate ERP and PCS, while establishing a smart production line that meets the requirements of intelligent processing.
1. MES (Manufacturing Execution Management System)
MES (Manufacturing Execution System) is a crucial component in smart factory construction. It primarily assists smart factories in achieving functions such as management planning, production scheduling, time planning and management, inspection and quality control, real-time production data acquisition, and equipment management. It also plays a bridging role; for ERP systems, MES can provide timely production and data information; for PCS systems, MES can effectively utilize their data to analyze production and management processes.
The MES system connects with top-level data and management plans, interacts with ERP, and interacts with the Production Control System (PCS) through five basic modules, including database, collaborative management, and planning quota modules, to complete a complete MES production system.
2. Database Construction
Establishing an MES database requires creating and analyzing databases such as product structure, organizational structure, scheduling processes, process management, material management, quality management data, tools and equipment, and more. This involves collecting various types of data and information to build a large-scale database. The database construction should be as comprehensive as possible to ensure the accuracy of MES intelligent analysis.
3. Intelligent Management
The purpose of using MES to build production management goals is to enable intelligent management of the factory. The monthly production plan issued by the management can be divided into short-term operation plans based on the factory's processing conditions and production capacity. Short-term operations are usually planned on a daily or weekly basis, and the factory schedule is coordinated to complete the entire operation requirements. When the factory applies an intelligent production management system, the plans and management status at each level of the factory can be adjusted in a timely manner according to the actual production situation, fully reflecting the actual production operation situation, and promptly feeding back any problems that occur in the operation to the management, so that the management can adjust the operation plan in a timely manner, thus completing the intelligent construction of production management.
4. Intelligent production line based on MES
The establishment of the MES system for the smart factory completes the construction of the management, data, and knowledge layers of the entire smart factory. To put it into practice, it is necessary to complete the construction of the smart production line within the smart factory. The smart production line, combined with the MES system, completes the construction of the entire smart factory.
A smart production line is an intelligent unit that can automatically complete the entire processing line. This production line introduces intelligent equipment and systems into traditional manufacturing, completing the entire automated processing process from start to finish. Small manufacturing plants often require multiple small smart production lines. Each smart production line should be able to automate the manufacturing process of some products in the factory, including material feeding, manufacturing, inspection and testing, and warehousing. Simultaneously, the production line should also support automatic fault reporting and automatic detection functions.
The equipment on the production line can be transformed into intelligent systems using traditional CNC machining equipment. This includes adding material conveyor belts to facilitate material transfer, robotic arms to facilitate product loading and unloading, automatic inspection equipment, and automatic fault feedback equipment. Ultimately, the entire intelligent production line completes the unmanned processing process from raw material processing to finished product.
In summary, with the development of Industry 4.0, the intelligent construction of traditional factories is an inevitable trend and a development direction that improves efficiency, quality, and people-oriented practices. The development of smart factories should fully mobilize the joint development of management and production lines. In the process of intelligent production management development in China, a development model based on MES (Manufacturing Components, Systems, and Telecommunications) has gradually formed. However, the construction of intelligent production lines and intelligent logistics should be diversified, and the development path of smart factories should be explored from multiple perspectives.
