| With the release of "Made in China 2025" and the continuous promotion of industry 4.0,the development of auto parts manufacturing enterprises has ushered in new opportunities and challenges.The so-called new opportunity is that as the country’s economic development increases steadily and the people’s disposable income increases,there will be a demand for the replacement of automobiles,which will drive the market demand for automobiles;the so-called new challenge is that with the expansion of market demand,the competition among manufacturers intensifies.How to provide consumers with the best quality,lowest price,and best after-sales service products in a shorter time has become an urgent problem for major auto parts manufacturers.In order to seize more market share in the new environment,auto parts manufacturers,as an established manufacturing industry,must keep up with the pace of development of the times,not only focus on the research and development of core technologies,but also on the basis of its original production line,give full play to IE theory,lean thinking,human factors engineering and other theories to improve the production efficiency of the assembly line,increase the actual production capacity of the assembly line,and improve the quality of mass-produced products.This paper aims at the actual production situation of the disc brake assembly line of H company,using IE theory,dual population genetic algorithm and other methods to solve practical problems,in order to achieve the optimization goal of improving the balance rate of the assembly line and increasing the production line capacity.Firstly,clarify the research background and significance of the thesis,sort out the relevant domestic and foreign research literature,and determine the research content and methods of this article on the premise of mastering a solid theoretical foundation;secondly,inspect the operating conditions of H company,make a preliminary understanding of the layout of the assembly workshop,product assembly process,and on-site operation environment,analyze the balance rate of the assembly line before optimization through the stopwatch test method,summarize the problems in the workshop and process of the disc brake assembly line;then in the comprehensive utilization of 5W1 H,ECRS,fishbone diagram and other tools in the traditional IE theory to initially design the assembly process optimization plan to reduce unnecessary process flow.On this basis,the dual-population genetic algorithm is used to design an assembly line optimization plan to balance the workload of each station,then designing and implementing the layout optimization plan and the on-site operating environment improvement plan to systematically optimize the whole assembly workshop;then,use Flexsim simulation software to simulate the designed assembly line optimization plan,verify the feasibility of the optimization plan,and comprehensively compare and optimize various parameters of the front and rear assembly lines from multiple angles;finally,from the aspects of personnel,organization and system,put forward the guarantee measures to ensure the smooth implementation of disc brake assembly line optimization scheme. |