Research On Production Planning And Scheduling Problems Of Accessories Products Of Railway Passenger Cars

With the accelerated pace of production innovation, the production mode of the accessories products of railway passenger cars has been transformed into the multi-species, small and medium batch process. The core work of such product is that the product manufacturing enterprises of the accessories products of railway passenger cars fulfills the manufacturing task of railway passenger accessories according to the requirements of railway passenger car manufacturer enterprises on time. The main works are:(1) the work of production planning decomposition and capability balance; (2) arrangement for work of job shop scheduling.The product of rail passenger window of railway passenger cars is taken as the background. Actual needs of production planning and scheduling are also taken into consideration. This paper utilizes production planning and control idea of a combination of MRP and JIT, focusing on management expectations of short-term zero stock. The actual production for four types of window of railway passenger cars is taken as an example. First, the problem of production planning decomposition and ability balance of the products is studied, and relevant mathematical equation is established. The preparation and scheduling process of daily production plan is designed according to the practice. Calculation and analysis for actual production plan is made, and corresponding conclusions are obtained. Then, on the basis of characteristic and the idea analysis of production scheduling problem, it is designed that the basic processes of the products daily production job scheduling with the use of JIT which is in combination of Kanban to pull production control mode from guaranteeing of the production process, balance, and preventing products from backlog. At the same time, considering the uniqueness of production equipment, taking the idea of non-standard job shop scheduling as example, mathematical model of production job scheduling is established, and the Genetic Algorithm is used to solve the problem.Based on the above work, object-oriented technology is applied to this research. Information system model of the product manufacturing planning and job scheduling is established. The software implementation of the system is completed in the Microsoft Visual Studio 2005 development environment using C# 2.0 language and Access database.