Centralized Scheduling Method for CNC Machine Tools in Processing Workshops in Case of Emergency Adding Orders

Abstract

The invention discloses a centralized scheduling method for numerically-controlled machine tools in a processing workshop under the condition of emergency orders. The method includes the following steps that 1, emergency-order processing information is input; a parameter input device connected with a scheduling controller is adopted for inputting the emergency-order processing information, and thescheduling controller is used for synchronously recording the input emergency-order processing information; 2, emergency orders are executed, wherein the parameter input device inputs emergency-orderexecution information, the scheduling controller is used for synchronously recording the current time, and the recorded current time is the time for emergency order execution; 3, non-cooperative-game-based emergency order scheduling is conducted. According to the method, workpiece machining processes serve as scheduling objects, under the condition of the emergency orders, only two machining processes are subjected to non-cooperative games at the same time and correspondingly allocated to the optimal machining machine tool, the scheduling difficulty under the condition of the emergency orderscan be largely reduced, and at the same time, the requirements of production for high efficiency and stability can be met at the same time.

Description

Technical field [0001] The invention belongs to the technical field of dispatching control, and in particular relates to a centralized dispatching method for numerically controlled machine tools in a processing workshop under the condition of urgently adding orders. Background technique [0002] In the actual production process, there are often many uncertain factors in the production and processing environment and process, such as unfixed processing time, machine failure, temporary orders, order cancellation, and delivery time changes. These uncertain factors often disrupt the original scheduling plan and material distribution plan, and the scheduling plan and processing plan lack an effective response mechanism to various uncertain factors in the production process. Under the influence of these uncertain factors, the execution result of the originally formulated scheduling plan is often very different from the expected result, which not only degrades the scheduling performance,...

AI Technical Summary

Problems solved by technology

However, this method only considers the high efficiency of the system, and does not take into account the stability requirements

When a disturbance occurs in the workshop, after the real-time scheduling is completed quickly, there may be a large difference between the rescheduling plan and the original plan, resulting in unstable production

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