Simulation And Optimization Of Wood Window Mixed Flow Assembly Lines For Lean Production

With the improvement of customer service level,enterprises should have the ability to deliver products to customers at a low cost,high quality and high speed.This paper takes Sengying wood-window mixed assembly line as the research object,guided by lean production idea and combining production system simulation technology to optimize the wood-window mixed assembly line.The main research contents are as follows:Firstly,according to the production process of wooden window,the process of wooden window is divided into 8 assembly workstations,and the standard time of each workstation is determined.Using the method of discrete system simulation modeling,the simulation model of mixed flow assembly line of wooden window is established by Plant Simulation,and the model parameters are set up by sorting out the actual production data of workshop,running the model and analyzing the simulation results.It is found that there is a waste of resources in the enterprise.The optimization scheme is put forward from two aspects of man-machine operation and putting into operation sequencing.Secondly,in view of the waste of human resources in the production process,the key workstations are optimized by job analysis.On this basis,the dynamic influencing factors such as machine failure rate are studied,and a simulation model of human-machine ratio is established.The best human-machine ratio in different production situations can be obtained only by modifying the model parameters.Under the guidance of lean production,the allocation of workshop machines and human resources is optimized.Then,a production sequencing mathematical model with the objective of minimizing the maximum completion time is established,and an improved particle swarm algorithm is designed to improve the global search ability,and the implementation process of the improved particle swarm algorithm is described in detail.Through the model solution,more suitable production sequence for the actual situation of wooden windows can be obtained,and the time waste in assembly process can be reduced.The validity of the improved particle swarm algorithm to solve the production sequencing model is verified by solving the same case compared with particle swarm optimization.Finally,based on Plant Simulation,a simulation platform for mixed-flow assembly line of wooden windows is designed,which includes user main interface,man-machine operation and production sequencing modules.Provide simulation results support for decision-making analysis of workshop manager to realize fast response of dynamic order.Through enterprise case analysis,verify the practicability of simulation platform,and provide a basic platform and powerful tool for continuous use of reasonable production planning mode for wood-window mixed assembly line under changing customer demand.Use Plant Simulation software to simulate and model the mixed-flow assembly line of wooden windows,and optimize the mixed-flow assembly line of wooden windows from the perspective of man-machine operation and production sequencing in this paper,realizes the goal of improving production capacity and reducing resource waste of enterprises,and has important theoretical significance and practical value for the optimization research of mixed-flow assembly line of wooden windows.