经编机装配工艺优化研究及车间布局设计

发布时间：2018-04-30 08:56

本文选题：经编机 + 装配工艺优化　；参考：《南京理工大学》2017年硕士论文

【摘要】：经编机是纺织行业的主流机型之一,需求量巨大,品种变化快,难以实现多种经编机共线生产,其装配车间布局直接影响生产效率。本文以某纺机厂总装车间布局规划作为研究对象,通过分析和改进经编机装配工艺,以提高车间品种适应性和经编机装配质量为目标,基于仿真规划综合评价得到了车间布局设计方案,对经编机行业建立装配车间布局起到示范作用。首先,总结调研了经编机装配工艺、装配流水线和装配车间布局的国内外研究现状,分析了经编机的相关结构特点和建立数字化车间的思路。针对多品种小批量的定制化生产模式,明确了经编机装配车间的设计目标、关键技术及总体设计方案。然后,针对经编机装配工艺进行研究,对装配约束条件下的装配序列规划问题建立数学模型,提出了一种求解问题的VPS-PSO算法,得到更优的装配序列方案;建立经编机装配偏差模型,通过容差分析合理优化调整容差分配方案,并有针对性地建立装配工艺检测环节,保证关键尺寸的装配精度,实现了提高经编机装配成功率的设计要求,并以经编机关键传动机构为例,验证了装配工艺优化的合理性。接着,在经编机装配工艺优化的基础上,对装配车间的布局进行了规划,进行装配流水线的设计。建立了多目标优化混流装配线平衡问题的数学模型,并利用VPS-PSO算法进行求解。以四种结构差异较大的经编机机型为例建立经编机装配流水线。在系统化布置设计方法的基础上,采用成组相关性、物流路径循环性、物料进出流转性的设计原则对布局方案进行优化设计。最后,通过运用Flexsim软件对车间布局方案进行可视化建模仿真运行,最终选择综合评价最优的经编机装配车间布局方案。该方案可以满足预定的设计要求,同时具有布局紧凑、物流流转顺畅和场地柔性等优点。
[Abstract]:Warp knitting machine is one of the mainstream machines in textile industry. It is difficult to realize the collinear production of many warp knitting machines because of its huge demand and fast variety change. The layout of assembly workshop has a direct impact on the production efficiency. In this paper, the layout planning of the assembly shop of a spinning machine factory is taken as the research object. By analyzing and improving the assembly process of warp knitting machine, the purpose of this paper is to improve the adaptability of the workshop variety and the assembly quality of the warp knitting machine. Based on the comprehensive evaluation of simulation planning, the design scheme of workshop layout is obtained, which plays an exemplary role in the establishment of assembly workshop layout in warp knitting machine industry. Firstly, this paper summarizes the research status of warp knitting machine assembly process, assembly assembly line and assembly workshop layout at home and abroad, analyzes the relevant structural characteristics of warp knitting machine and the idea of establishing digital workshop. According to the customized production mode of many varieties and small quantities, the design goal, key technology and overall design scheme of warp knitting machine assembly workshop are defined. Then, the assembly process of warp knitting machine is studied, and the mathematical model of assembly sequence planning under assembly constraints is established, and a VPS-PSO algorithm is proposed to solve the problem, and a better assembly sequence scheme is obtained. The assembly deviation model of warp knitting machine is established, and the tolerance distribution scheme is optimized by tolerance analysis, and the assembly process inspection link is established to ensure the assembly accuracy of key dimensions. The design requirements of improving the success rate of assembly of warp knitting machine are realized. The rationality of assembly process optimization is verified by taking the key transmission mechanism of warp knitting machine as an example. Then, based on the optimization of assembly process of warp knitting machine, the layout of assembly workshop is planned and assembly line is designed. The mathematical model of mixed flow assembly line balance problem is established and solved by VPS-PSO algorithm. The assembly line of warp knitting machine is established by taking four warp knitting machines with different structure as an example. On the basis of the systematic layout design method, the optimization design of the layout scheme is carried out by adopting the design principles of group correlation, logistics path circulation and material flow in and out. Finally, through the visual modeling and simulation of the workshop layout scheme by using Flexsim software, the optimal layout scheme of warp knitting machine assembly workshop is finally selected. This scheme can meet the requirements of design, and has the advantages of compact layout, smooth flow of material flow and flexibility of site.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TS183.3

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