基于PLC的M7130磨床电控系统设计(论文17000字)
摘要
现今企业与学校中很多磨床年代久远，且采用的是传统的继电器—接触器的控制方式。由于这种控制方式存在着线路复杂、可靠性低、故障率高等缺点，其工作性能已远远达不到现代生产的要求。因此有必要对旧式的常规控制系统进行技术改造，以可编程序逻辑控制器（PLC）取代常规的继电器，以达到磨床自动化控制的要求。
本次设计主要采用了PLC对M7130磨床的电气控制系统进行设计改造。首先分析了M7130磨床的电气控制原理，确定了采用PLC改造M7130磨床电气控制系统的设计方案，同时根据M7130磨床的控制要求和特点，确定PLC的输入/输出分配，完成电气控制系统的硬件和软件设计。最后在原继电器控制线路的基础上，设计出梯形图并进行现场调试。改由PLC控制后，其电气控制系统大大的简单化，并且维修方便，易于检查，节省大量的继电器元件，机床的各项性能有了很大的改善，工作效率有了明显提高。因此该项技术还可推广应用于自动化其他领域的控制系统中。
关键词: PLC M7130磨床 电气控制系统 改造
Abstract
Nowadays in the enterprise and the school the very many grinder age is remote, also uses is the traditional relay - contact device control mode. Because this control mode has the line complex, the reliability low, the failure rate higher shortcoming, its operating performance could not achieve the modern production by far the request. Therefore has the necessity to carry on the technological transformations to the old-style convention control system, by the programmable logic controller (PLC) substitution convention relay, achieves the grinder automation control the request.
This design is uses PLC to carry on the design transformation to the M7130 grinder electricity control system, First,the design has analyzed the M7130 grinder electrical control principle,simultaneously acts according to the M7130 grinder the control request and the characteristic, determines PLC the input/The output assignment, had determined uses PLC to transform the M7130 grinder electricity control system the design proposal, completes the electricity control system the hardware and the software design. End, in the original black-white control line foundation, designs the trapezoidal chart and carries on the scene debugging. Changes after the PLC control, its electricity control system big simplification, and serviced conveniently, easy to inspect, saves the massive relay element, engine bed each performance has the very big improvement, the working efficiency had the distinct enhancement. Therefore this technology also may promote applies in the automated other domain control system.
Keywords: PLC M7130 grinder Electrical control system Transformation
目录
1 绪论 1
1.1 本课题的研究背景与意义 1
1.2 相关领域国内外应用的现状及发展趋势 2
1.3 M7130磨床的概述 3
1.4 本课题的相关知识 4
1.5 本课题的主要内容 5
2 本课题的工作原理与总体设计 6
2.1 M7130磨床的主要结构 6
2.2 M7130磨床的工作原理 6
2.3 M7130磨床的运动形式及控制要求 7
2.4 M7130磨床电气控制线路图 9
2.5 M7130磨床PLC控制方案的设计 12
3 硬件设计 13
3.1 M7130磨床电器元件 13
3.2 PLC的选型原则 14
3.3 PLC的I/O分配 15
3.4 PLC 的外部接线 16
3.5 电气控制的安全技术措施 17
4 软件设计 19
4.1 流程图 19
4.2 分步梯形图 21
4.3 完整梯形图 24
4.4 程序语句表 25
4.5 PLC控制系统抗干扰设计 26
5 调试与仿真 28
结论 35
致谢 36
参考文献 37 |
