Research On Production Scheduling Model Of PC Component Factory Based On ATO

With the expansion of the production scale of prefabricated buildings,the market demand for prefabricated components has directly increased,and the orders of prefabricated component factories have also increased.In the production process of prefabricated components,problems such as untimely update of order information,low production scheduling flexibility,and low production efficiency occurred,which seriously affected the production efficiency of the prefabricated component factory and the progress of the construction site.Therefore,how the production unit uses its own resources to realize the on-time supply of orders for multiple projects and multiple production lines has become an urgent problem to be solved.In this paper,we take the prefabricated component factory as the research object,the order-based assembly method as the guide,and the BIM technology application as the support.The establishment of the order combination model and the production line scheduling model is of great significance for scientifically and rationally managing the prefabricated component production process.(1)In this paper,we study prefabricated component production scheduling of the characteristics and problems,it is concluded that prefabricated component factories need to solve two core problems in production management: one is the timely transmission of order change information across organizations or departments;the other is for order dynamics,With the characteristics of variability and multiple constraints,establish an order combination model(macro scheduling)and a production line scheduling model(micro scheduling).Avoid the blindness of manual production scheduling,improve production efficiency and order supply capacity.(2)In order to solve the above problems: use BIM technology as a method of cross-organization(department)order information transmission to ensure the accuracy of the source of tasks for the prefabricated component producer.Under the guidance of order-to-order production,the number of components,single-line production capacity,and component requirements are constraints,an open order combination model is constructed to meet the flexible combination and scheduling requirements of multi-source dynamic orders,and the production scheduling demand plan is calculated.With the shortest production time as the scheduling goal,the multi-component and multi-line production method is used to establish a production line scheduling model to guide the actual production of the component factory.(3)case study: Take three different prefabricated construction projects as examples to verify the effectiveness and feasibility of the macro production scheduling model and the production line scheduling model.Therefore,the proposed model has strong operability,and can obtain the optimal construction period and production scheduling plan under limited resources.The manufacturer can improve the production efficiency and production capacity of prefabricated components through scientific production scheduling methods,which can effectively solve the current stage of production.The problems of scheduling also provide reference and thinking for the further optimization of later production scheduling.