Research And Application Of Production Problems In Aviation Standard Parts Enterprises Considering Emergency Order Insertion And Equipment Failure

The production management problem is fundamentally a resource allocation problem.It is the key to reducing costs and increasing efficiency for aviation standard parts manufacturing enterprises.It is of great significance to the in-depth study and expansion of the production scheduling of aviation standard parts enterprises.Disturbances such as emergency order insertion and equipment failure in aviation standard parts manufacturing enterprises affect the normal operation of the initial dispatch plan.Considering that the production of aerospace standard parts belongs to a multivariety and cross-batch model,there are multiple flexibilities in the selection of process routes,machine tools,batch merging and splitting.The workshop scheduling problem has higher flexibility and special constraints.Under the premise of scheduling and execution,effective control of disturbance events in the production process can not only shorten the delivery cycle of orders,increase the utilization rate of workshop equipment,and improve the delivery performance of the company and customer satisfaction.For this reason,on the basis of the subject,this paper studies the optimization method of aviation standard parts production scheduling considering emergency order insertion and equipment failure dynamic disturbance events.This paper takes the workshop production system of aviation standard parts manufacturing enterprises as the research object,and studies the scheduling problems caused by emergency order insertion and equipment failures in the production management of aviation standard parts enterprises.First of all,based on the background analysis of the domestic aviation standard parts industry,a number of domestic aviation standard parts manufacturing enterprises were investigated.The focus of the investigation was on the production management of the workshop,finding problems,and putting forward optimization requirements.Then,combined with the characteristics of emergency orders,the problem of batch scheduling in the production workshop of aviation standard parts enterprises considering the benchmark batch under the disturbance of emergency order insertion is studied.Construct an initial scheduling model with minimizing the maximum completion time and minimum batch slack as optimization goals,and a multi-objective rescheduling model with rescheduling stability and minimum batch adjustment.Two types of interference management strategies,gap insertion order and global rescheduling,are applied to the generation of rescheduling schemes.Aiming at the characteristics of multivariety and cross-batch production,a heuristic batching algorithm based on free space for small batch orders,and a non-dominated sorting genetic algorithm with improved coding methods,batch optimization methods and variable neighborhood search strategies are proposed for small batch orders.Model solving.Secondly,taking full account of the actual production,a robust scheduling model with buffer time is proposed to deal with equipment failures or the occurrence of two types of disturbance events.In addition,partial rescheduling based on the tolerance of workpiece delays,a dynamic adjustment strategy based on slack time,and an adjustment strategy for global rescheduling are proposed to deal with interference events.And according to the particularity of the model,the coding method and initialization method of the scheduling algorithm are adjusted in a targeted manner.Finally,the production system of the external thread manufacturing workshop of the aviation standard parts H company is selected as the research background,and the batch scheduling model,disturbance event response strategy and scheduling algorithm proposed in this paper are analyzed and applied.According to the analysis of application effects,the models,algorithms and strategies proposed in this article have theoretical value and practical significance.