A centralized scheduling system and method for CNC machine tools in a processing workshop

Abstract

The invention discloses a centralized-dispatching system and method for numerically-controlled machine tools in a machining workshop. The system comprises a dispatching controller located in the machining workshop and used for dispatching N numerically-controlled machine tools, a parameter input device connected with the dispatching controller and a machine tool machining state monitoring device for monitoring machining states of the N numerically-controlled machine tools, wherein the dispatching controller is connected with the machine tool controller of the N numerically-controlled machine tools. The method comprises the steps of starting dispatching, inputting emergent additional order machining information, and dispatching additional orders based on non-cooperative games. The dispatching controller is matched with the machine tool machining state monitoring device for monitoring the machining states of the numerically-controlled machine tools in use, and the purpose of conducting real-time dispatching on the real-time machining sates of the numerically-controlled machine tools is achieved.

Description

technical field [0001] The invention belongs to the technical field of scheduling control, and in particular relates to a centralized scheduling system and method for numerical control machine tools in a processing workshop. 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 order, order cancellation, delivery time change, etc. 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 results of the original scheduling plan are often quite different from the expected results, which not only degrades the scheduling performance, even makes the scheduling itself unable to be ...

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

[0006] In addition, in the dynamic scheduling problem of traditional flexible manufacturing workshops, when an emergency order occurs, the production scheduling system will centrally allocate all the orders to the corresponding CNC machine tools. In this centralized scheduling method, the CNC machine tools cannot be combined with other Manufacturing resources interact, so real-time manufacturing resources are not considered when performing real-time scheduling; and due to the occurrence of unknown abnormal events, there is a large deviation between production planning and execution

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