Research On DT Company’s Production Site Improvement Based On Lean Thinking

Lean production originated from Toyota production mode in Japan.Based on Lean thought,enterprises manage and optimize the production site,which bring great benefits to the development of enterprises.Site improvement is the deepening of site management.It aims at improving the level of site management.Based on the theory of continuous improvement,it uses relevant analysis tools and improvement methods to improve production factors,so as to realize the rational allocation of production factors,to improve production efficiency and product quality.That is of great significance for enterprises to improve their development.Through the description of the DT company production site’s present situation,this paper summarizes and analyzes the problems existing in site management and production process,and then to improve the problems raised.The main contents of the paper include:Firstly,this paper discusses the background and significance of on-site improvement research,introduces t research status of on-site improvement at home and abroad,and summarize the relevant theoretical research of on-site improvement,introduces the related concepts of field improvement.The emphasis is to summarize the methods of field improvement.Then,this paper analyzes the current situation of DT production site,summarizes the problems existing in the production workshop management and production process of DT Company: there are bottlenecks in the body workshop,chaotic logistics lines in the body workshop,and low production line balance rate in the final line of assembly workshop.Then the causes of the above three problems are analyzed by using fishbone diagram,logistics from arrival table and strength table,and Arena simulation.Finally,three improvements are made from the following aspects: operation process,workshop layout and production line balance.In the aspect of work process,through the program analysis,the operation process of the top cover is optimized,so that the workstation is no longer a bottleneck;in the aspect of workshop layout,mathematical model was established and genetic algorithm was used to solve the problem,and the optimization scheme of workshop layout was obtained;in the aspect of production line balance,the final line was optimized by job analysis and ECRS principle.The improvement has raised the balance rate to 78.8%.Finally,this paper points out the limitations and shortcomings in the research process,and provides the space for further research and improvement direction.