蝶形阀门装配生产线的设计

发布时间：2018-06-20 02:35

本文选题：工业阀门 + 装配生产线　；参考：《天津理工大学》2017年硕士论文

【摘要】：在新的时代背景下,作为基础型工业的阀门制造业将会以高技术支持与高产品质量为导向,通过对生产工艺进一步优化,实现技术革新。国内的阀门生产多存在于低端领域,除了对制造工艺的进一步强调,关于生产线提出了更高要求,希望通过自动化生产逐步取代手工式的劳动力输出。本文中设计的蝶形阀门装配生产线就是在此背景下得以展开的,着力于生产线中核心的装配环节,目的是实现装配的自动化生产。经过对实际生产的详细了解,结合主流生产线的理论研究方法,分析得到现有实际生产的相关滞后参数,展开了对装配线的重新布局和工序编定,得到了整条装配生产线的设计方案,在解放劳动力的同时,实现装配效率的提升,产量的翻倍式增长。对整条生产线的结构设计包括主装配线和分装配线。在分装配线端,通过附有多个“C”型夹具的旋转架转动,利用上下组合气缸实现碟板和胶套组装。在主装配线端,通过机械手实现对支线端组合件的抓取;利用垂直位置的气缸下压,把机械手中的组合件压入阀体;利用单气缸在主装配线的末端的推送,完成最后对阀杆的组装。其中主线和直线的推进形式为步进式,相关控制结构相同,都是利用滑块和限位结构组合作用实现生产线的传动和停止。在动力装置的选用上,按作用可分为传动气缸、组装气缸、控手伺服电机。通过CAD、Solidworks与ANSYS Workbench的对接,实现对传动装置、动力装置的有限元模拟。在对施加载荷的链条和步进式推动结构进行静力学分析后,选取了最优推动工位,通过推动结构的应力分布,得到其结构的应力值均小于许用应力,在安全范围内,确定了传动的可行性;在对伺服电机控制的机械手结构进行模态分析后,确定了结构的固有频率,避免了与电机的频率产生共振。此设计中各工序的控制由可编辑逻辑控制器(PLC)实现,此过程结合了生产要素和工作原理,对PLC控制程序提出了对应控制要求。
[Abstract]:Under the background of the new era, the valve manufacturing industry as the base industry will be guided by high technology support and high product quality, through the further optimization of production process, technological innovation will be realized. The domestic valve production mostly exists in the low-end field, except for the further emphasis on the manufacturing process, the production line put forward higher requirements, hoping to replace manual labor output step by step through automatic production. The butterfly valve assembly line designed in this paper is carried out under this background, focusing on the core assembly link of the production line, in order to realize the automatic production of assembly. Through the detailed understanding of actual production, combined with the theoretical research method of mainstream production line, the relevant lag parameters of actual production are obtained, and the rearrangement of assembly line and process planning are carried out. The design scheme of the whole assembly line is obtained. The assembly efficiency is improved and the output is doubled while the labor force is liberated. The structural design of the whole production line includes the main assembly line and the distribution assembly line. At the end of the assembly line, the disc and rubber sleeve are assembled by rotating the rotating frame with several "C" jigs and using the upper and lower combined cylinders. At the end of the main assembly line, the assembly of the branch line end is grasped by the manipulator; the assembly of the mechanical hand is pressed into the valve body by the pressure of the cylinder in the vertical position; and the push of the single cylinder at the end of the main assembly line is used. Complete the final assembly of the stem. Among them, the main line and straight line propulsion form is step type, the related control structure is the same, the combination of sliding block and limit structure is used to realize the transmission and stop of the production line. In the selection of power device, according to the role can be divided into transmission cylinder, assembly cylinder, control hand servo motor. The finite element simulation of transmission device and power device is realized through the docking of CAD Solidworks and ANSYS Workbench. After the statics analysis of the chain and stepping propulsion structure under load, the optimal driving station is selected. By the stress distribution of the impelling structure, the stress values of the structure are all less than the allowable stress, which is within the safe range. The feasibility of transmission is determined. After modal analysis of manipulator structure controlled by servo motor, the natural frequency of the structure is determined to avoid resonance with the frequency of motor. In this design, the control of each procedure is realized by PLC, which combines the production elements and the working principle, and puts forward the corresponding control requirements for PLC control program.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH186

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