PLC在组合机床上的应用的设计要点.docVIP

PLC在组合机床上的应用的设计 摘 要 可编程控制器（Programmable logic cintroller,PLC）是在传统的顺序控制器基础上引入微电子技术和计算机技术而产生的，用来取代传统的继电器、接触器控制系统，执行逻辑控制、计数、计时、数据处理及通信等功能。PLC作为现代工业自动化的三大支柱（机器人、CAD/CAM、PLC）之一，以其高可靠性、灵活性在工业控制领域迅猛发展，得到了越来越广泛的应用。大量采用传统继电器控制系统的设备通过改造或更新，成了PLC控制的自动化系统。同时，又因PLC改造成本低、简单易用等，使其在教学实验及日常生活中的使用越来越普及。 本次毕业设计主要围绕以下方面开展：采用SE-11R-EX型整体式小型PLC实现控制系统的设计，着重从组合机床的液压系统深入研究，确定其控制要求，明确PLC的机型的选择，确定I/O地址的分配，设计I/O接线图、控制流程图及梯形图，深入理解PLC的编程方法，按照控制要求满足动力头多种动作循环要求的系统进行编程。 关键字：PLC，组合机床，机床滑台，电磁阀 Combination of PLC in Machine Tool Design Abstract Programmable Logic Controller (Programmable logic cintroller, PLC) in the traditional order of the controller based on the introduction of micro-electronics technology and computer technology created to replace the traditional relay, contactor control system, implementation of logic control, counting , time, data processing and communications functions. Modern industrial automation PLC as the three pillars (robots, CAD / CAM, PLC), one of its high reliability, flexibility in the rapid development of the field of industrial control has been more and more widely. A large number of traditional relay control system or equipment through the transformation has become a PLC-controlled automation systems. At the same time, because PLC transformation of low-cost, easy-to-use and so on, to experiment in the teaching and use in daily life is becoming increasingly popular. The graduation project on the following major areas: the use of SE-11R-EX-based small-scale integrated PLC control system design, focusing on machine tools from the combination of in-depth study of the hydraulic system to determine control requirements, a clear choice models PLC to determine the I / O address allocation, the design of I / O wiring diagram, control flow chart and the ladder, in-depth understanding of PLC programming method, in accordance with the control requirements to meet the power requirements of the first cycle of a wide r