The MES system of automobile manufacturing enterprises consists of seven functional modules, namely: ALC system, in-plant logistics system, material sorting system (DPS), product manufacturing quality system, AVI system, ANDEN system, PMC system and supplier system.
The main function of ALC (assembly line control) is to establish the vehicle production sequence according to the daily vehicle production plan of the factory, and at the same time send the production sequence plan to the factories (determine the arrival of parts according to the vehicle production plan sequence).
In-plant logistics system is a system that calculates the number and use time of parts according to the production sequence plan, and then realizes timely distribution according to the production line schedule.
The benefits brought by the logistics system in the factory to the enterprise;
According to the instructions of ALC system, the material sorting system automatically selects the parts needed in the production line by using barcode scanning technology to ensure the accuracy of parts collection.
Print a quality information collection form at the starting point of welding, painting or final assembly, which contains information such as Vinno, project and location of the vehicle. If there are quality problems in the production process, record them on the collection sheet. Centralized data collection table until welding or painting or final assembly is off the assembly line. Centralized scanning and input of quality information in the control room.
Product quality traceability management is mainly divided into key parts batch collection and query functions, in which key parts batch collection supports distributed and centralized functions. The backtracking query function supports forward query and reverse query. The batch data acquisition method of key parts is as follows: print several material information acquisition sheets with vehicle Vinno number in the control room of each welding or assembly factory, and paste the identification bar code of the parts on the acquisition sheets when the parts are actually assembled. When the vehicle runs to each collection point, take down the collection sheet that has been covered with bar codes for data collection, and bind the vehicle Vinno, supplier code, material number code and material batch.
AVI system (Automatic Vehicle Identification) is an automatic vehicle identification system. It uses bar code or RFID (radio code carrier) and other means to track the whole process of the car body, parts, vehicles/spreaders in production. AVI system is the key link between the bottom production automation equipment and the upper information management system. Its function in MES system is a link between the preceding and the following, and it is one of the most important and basic functional modules: receiving the sequential production plan issued by ALC system, sending instructions to the production automation equipment to call the corresponding processing program according to the production plan, and returning the actual production results after the processing is completed.
The concept of ANDON was put forward by Japanese automobile company, which is widely used in the assembly line system of global automobile industry. Follow the principle of "no acceptance, no manufacture, no transmission of defects" to ensure product quality. ANDON system is one of the necessary means of total quality management control. It follows the principle of synchronous manufacturing to produce high-quality products, and adopts the method of on-line (on-site solution) when manufacturing products, which improves the first off-line qualification rate and reduces the rectification after manufacturing. The quality management function of ANDON system requires every operator to have the ability to finish the correct processing of vehicles on time, with good quality and quantity, so as to prevent the quality problems from being passed on to the next station.
ANDON system mainly includes the following seven functions:
PMC system (production monitoring &; Control) is a monitoring and control system of production process. PMC system can monitor the operation of automatic equipment in production line in real time, and notify the relevant personnel in the workshop of comprehensive alarm fault information in real time through man-machine interface at the first time; Monitor the production status of each shift, the production rhythm of each production line, the normal running time, downtime and fault type of each equipment; By sorting out and analyzing the information recorded in the database, customized production reports are generated, which lays a data foundation for truly realizing the ultimate goal of "predictive and preventive maintenance" of equipment management.
The supplier system is an important system for automobile assembly plants to manage parts suppliers, and it is also an important system to ensure the smooth production of automobile plants.
The above content is only a general introduction to MES system of automobile production enterprises, and the next section will introduce ALC subsystem in detail. Please pay attention to #IT veteran #, click on the "Digital Club" circle card below, and join the circle to keep abreast of the latest developments.