数控母线冲压机床控制系统研究与开发

发布时间：2018-06-18 15:57

本文选题：数控 + Simulink　；参考：《昆明理工大学》2015年硕士论文

【摘要】：随着大型工程项目和现代化制造的不断发展,各领域用电需求越来越大,尤其是大型流水线生产企业等高耗能企业的出现,作为对电能输送的传统电缆已经无法满足大电流输送,母线作为一种配电导线应运而生。母线在大电流传输时,导电性和安全性等方面体现出其优越性。正是由于母线的广泛使用,特别是在电力这种高危行业中对母线的工艺要求、安全性能越来越高。这样母线加工设备必须满足大批量生产、较高加工精度、质量稳定、机床自身精度高、自动化水平高,操作简单等特点。然而引进一套数控设备价格相当昂贵,国内很多机床厂都投入到母线加工设备的研发与生产中,但是国内产品相比于国外先进产品还有较大差距。因此还需要开发出一套加工性能好,自动化程度高,价格低廉的自动化母线加工设备。昆明昆开专用数控设备有限责任公司和昆明理工大学合作开发的数控母线冲压机床正是为了满足母线加工要求而研发的。本文以数控母线冲压机床为研究对象,首先根据机床功能的不同,将机床分为机械手送料工位、冲剪工位、折弯工位等多个工位,分别对他们进行结构和动作流程分析,同时对其中的液压系统、丝杠工作台进行性能分析和研究。建立其简化数学模型,得出其传递函数。引入数控母线冲压机床实际参数后,通过Matlab软件中的Simulink模块进行仿真分析。得出系统的稳定性和响应速度。通过对机床进行结构分析后,对机床硬件系统和软件系统进行开发和设计。对比了各种控制系统后确定了由PLC作为下位机,人机界面作为上位机的“PLC+触摸屏”的控制方案。PLC和人机界面通过串行通信接口进行数据传输,构成紧密的上下位机关系。在PLC控制系统中,首先进行I/O点的资源分配,然后对其硬件接口进行设计,最后对PLC程序和人机界面进行开发。通过对数控母线冲压机床的控制系统进行调试运行,表明该控制方案能够保证母线加工精度,为数控设备的研发提供了新的思路。
[Abstract]:With the continuous development of large-scale engineering projects and modern manufacturing, the demand for electricity in various fields is increasing, especially the emergence of high-energy consumption enterprises such as large-scale assembly line production enterprises. As a traditional power transmission cable has been unable to meet the large current transmission, the busbar as a distribution wire emerged as the times require. Busbar shows its superiority in high current transmission, such as conductivity and safety. Because of the widespread use of busbar, especially in the high risk industry of electric power, the safety performance of busbar is more and more high. In this way, the busbar processing equipment must meet the characteristics of mass production, high machining accuracy, stable quality, high precision of machine tool, high level of automation, simple operation and so on. However, the introduction of a set of numerical control equipment is very expensive, many domestic machine tool factories are invested in the research and development and production of bus processing equipment, but domestic products compared with foreign advanced products still have a big gap. Therefore, it is necessary to develop a set of automatic bus processing equipment with good processing performance, high automation and low price. The CNC busbar stamping machine developed by Kunming Kunkai Special NC equipment Co., Ltd and Kunming University of Science and Technology is developed to meet the requirements of bus processing. In this paper, the CNC busbar stamping machine is taken as the research object. Firstly, according to the different functions of the machine tool, the machine tool is divided into four parts, such as feeding, shearing, bending and so on, and the structure and action flow are analyzed respectively. At the same time, the hydraulic system, screw table performance analysis and research. The simplified mathematical model is established and its transfer function is obtained. After introducing the actual parameters of NC bus stamping machine, the simulation analysis is carried out by Simulink module in Matlab software. The stability and response speed of the system are obtained. After analyzing the structure of machine tool, the hardware system and software system of machine tool are developed and designed. After comparing various control systems, the control scheme of "PLC touch screen" with PLC as lower computer and man-machine interface as upper computer is determined. The data transmission between PLC and man-machine interface is carried out through serial communication interface, which forms a close relationship between upper and lower computers. In the PLC control system, I / O point resource allocation is first carried out, then the hardware interface is designed. Finally, the PLC program and the man-machine interface are developed. By debugging and running the control system of NC busbar stamping machine, it is shown that the control scheme can guarantee the precision of busbar machining and provide a new idea for the research and development of NC equipment.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG385

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