Because of the large batch size of the products, the variety of products is relatively small, and there is only one variety.
This kind of production is generally produced by special line, the process is designed and differentiated by the principle of process dispersion, the blank enters the production line according to a certain cycle, and the finished product is obtained from the other end through automatic or manual logistics transmission (automatic logistics is mostly);
Another way of this kind of production is to produce in batches, and to change the varieties through the switching of production lines. The production of any one of them is generally large.
The key requirements for MES customization driven by high-volume flow production characteristics are as follows: First, the operation of the equipment is highly valued. Because a certain equipment is down, the entire production line may have to stop, unless there is more intermediate inventory, MES The requirements for real-time equipment monitoring and the management of spare parts extended by equipment management are proposed. Secondly, the scheduling scheme for this production method is generally better, and even the entire production line can be regarded as a black box, but in the plan When scheduling production, considering the stability of the equipment, it is generally necessary to add predictive maintenance considerations to improve the stability of the operation of the production line equipment and avoid stopping the line. Third, in terms of quality management, one of the goals of this production line is to Quality consistency, so the monitoring of product quality status is also the focus, the importance of real-time SPC is relatively high; Fourth, if it is a multi-variety rather than a single-variety production, it is generally produced in batches of production line switching methods. This situation compares the requirements for job scheduling, mainly because the resource allocation will be more complicated, and the author has investigated one such type. Enterprise, the enterprise is the practice of changing the switching mode between various varieties into a configuration library. When it is necessary to switch production, it can directly call a certain configuration scheme to execute, but if the number of varieties is not small, it needs to be introduced. The concept of a reconfigurable manufacturing system, which incorporates such constraints in planned scheduling, is very complicated.