Design Of Flexible Production Line For Automobile Assembly And Method Of Lean Process Optimization

With the rapid development of China’s economy and the changing demand of customers for automotive products,the market presents a market trend of multi variety and small batch.The final assembly workshop is the last link of automobile manufacturing.Its process simplification,production efficiency and low-cost operation are of great significance to improve the competitiveness of enterprises.With the fierce competition in China’s automobile market,the manufacturing mode and production line technology of automobile industry are constantly restricted.Personalized market demand has guided the transformation of automobile production mode from single variety to multi variety common line production.The new production mode not only promotes enterprises to bring new production requirements,but also has a negative impact on process complexity and low production efficiency.The process layout and production line design under the flexible production mode are significantly improved in difficulty and technology.Using scientific methods and theories to help enterprises with intelligent manufacturing technology to promote the development of production line process towards automation,diversification and flexibility is an urgent task for automobile enterprises...This article summarizes the company’s years of manufacturing experience and combines the future development trend of the automotive industry,innovatively proposes flexible production line design and lean process optimization topics.First,the flexible production line,LP theory,balance theory of flexible production line,etc.are elaborated,and the process of the final assembly production line is analyzed,simulation requirements are proposed,and theoretical guidance is provided for subsequent subject research.Secondly,using refined and parametric modeling methods to establish a three-dimensional model of the final assembly line,systematically explained the construction process of the three-dimensional platform of the final assembly line from single equipment modeling to assembly,to model simulation,and the method of establishing a three-dimensional database.,Build a flexible assembly three-dimensional platform,and establish a digital workshop to break through the structural rigidity constraints of traditional production lines.On this basis,this paper studies the use of transfer robots,multi-directional AGVs,high-position rolling machines and other facilities to build an adaptive,embedded multi-variety flexible production line,and take the hybrid vehicle power battery assembly loop line as an example,systematically It introduces the construction method of flexible production line from process plan determination,cycle design verification,equipment model and quantity determination,to flexible line three-dimensional modeling and on-site implementation,as well as the realization of line body self-adaptive multi-variety,which is a further step for the final assembly of the flexible production line.Build a solid foundation.Furthermore,this article introduces the STDS system to establish an assembly standard working hours database,combined with the idea of fixed working hours on the main line,further improves the assembly flexible production line,builds a distributed multi-branch coupling production line,and establishes a more lean process system.Starting from the process and working hours,analyze the differences of different products,adopt modularization,platformization,sub-assembly and other methods,combined with advanced assembly concepts and advanced assembly equipment,to create a highly flexible,strong product compatibility,and strong expansibility A new type of assembly line.Finally,this article categorizes the final assembly manufacturing data,further mines the value of manufacturing data,establishes a digital system for final assembly manufacturing quality,integrates traceability data,manufacturing process data and other types of data,so that manufacturing data serves manufacturing and realizes manufacturing quality data.Real-time monitoring,abnormal data push,manufacturing data analysis and other functions,and build a digital AI manufacturing platform for production,quality,cost control,etc.To sum up,combining theory with practice,this paper puts forward constructive solutions to the innovative design of assembly flexible production line,which can guide the realization of lean and flexible process in automobile assembly workshop and have intelligent manufacturing technology.