毕业设计--T68 镗床的PLC改造设计.doc

电气工程及其自动化专业 毕业设计（论文）指导书 课题名称: T68 镗床的PLC 改造设计 摘 要 采用可编程程序控制器{PLC}实现T68镗床的自动控制给出了系统主电路图，PLC输入/输出接线图和梯形图程序，提高了镗床控制系统的可靠性和镗床的工作效率，减少了维修，维护的工作量。为提高镗床控制电路的稳定性和自动化程度，延长镗床的使用寿命，降低机床的故障。分析T68 镗床的机械、电气控制原理，保留镗床主电路由PLC 取代复杂的电气连线控制，设计出由PLC 。为镗床的控制电路。该系统开发周期仅为一周，期间完成了将镗床的控制电路用PLC 梯形图实现，大大的简化了电路，从而降低机床的故障、更加便于控制、也降低了维修的难度。 关键词：三菱PLC；镗床；控制电路改造 Abstract Using programmable controller {PLC} T68boring machine automatic control system is given. The main circuit diagram, PLC input / output wiring diagram and ladder diagram program, raise boring machine control system reliability and boring work efficiency, reduce the repair, maintenance workload. In order to improve the stability of the boring machine control circuit and the degree of automation,Extended machine life, reduce machine fault .Analysis of T68boring machine mechanical, electrical control principle, retention of boring machine main circuit PLC replaces the complex electrical connection control, designed by PLC. For machine control circuit. The system development cycle is only for one week, during the completion of the boring machine control circuit with the PLC ladder diagram, greatly simplifies the circuit, thereby reducing machine fault, easy control, also reduces the difficulty of repair. Key words: Mitsubishi PLC; boring machine; control circuit transformation 目 录 引言 第一章T68镗床控制系统的PLC 改造设计. 1.1 设计要求............................................................6 1.2 设计思路.............................................................6 1.3 设计目的.................................................................6 第二章T68 卧式镗床的基本结构及工作原理..............................7 2.1 卧式镗床的概述及加工范围..................................7 2.2 T68 卧式镗床的基本结构及工作原理....................7 2.3T68 卧式镗床主要技术参数....................................7 2