CA6140型普通车床电气控制系统的PLC改造

CA6140型普通车床电气控制系统的PLC改造

目录

摘要 .................................................................................................................................................. I 前言 .. (1)

1 CA6140车床的概述 (2)

1.2 CA6140车床的主要运动形式及控制要求 (2)

1.2.2进给运动 (3)

1.2.3辅助运动 (3)

1.3 CA6140车床所用的电动机 (3)

2 CA6140车床电气控制电路分析 (4)

2.1 主回路分析 (5)

2.2控制回路分析 (5)

3 PLC控制系统的设计 (6)

3.2 PLC控制系统设计的步骤 (6)

3.3 PLC的相关介绍 (8)

3.3.1 PLC基本组成 (8)

3.3.2 PLC工作原理 (12)

3.3.3. PLC控制系统 (15)

3.3.4. PLC工作过程 (18)

3.4 PLC控制程序设计 (20)

3.4.1 PLC的选择 (20)

4 PLC控制系统及其实现 (22)

4.1 控制系统硬件 (22)

4.2 I/O的分配及其接线 (23)

4.3 梯形图程序与分析 (24)

结论 (25)

致谢 (26)

参考文献 (27)

CA6140型普通车床电气控制系统的PLC改造

摘要

可编程控制器是在继电气控制和计算机技术的基础上，逐渐发展起来的以微处理器为核心，集微电子技术、自动化技术、计算机技术通信技术为一体，以工业自动化控制为目标的新型控制装置。它具有结构简单、编程方便、可靠性高等优点，已广泛用于工业过程和位置的自动控制中。据统计，可编程控制器是工业自动化装置中应用最多的一种设备。专家认为，可编程控制器将成为今后工业控制的主要手段和重要的基础设备之一，PLC、机器人、CAD\CAM将成为工业生产的三大支柱。由于PLC具有对使用环境适应性强的特性，同时其内部定时器资源十分丰富。

它的功能主要是：控制功能、数据采集、储存与处理功能、通信、联网功能、输入/输出接口处理功能、人机界面功能。在系统构成时，可由一台计算机与多台PLC构成“集中管理、分散控制”的分布式控制网络，以便完成较大规模的复杂控制。

本设计的内容主要是利用PLC(Programmable Logic Controller)对CA6410型车床的电气部分进行改造。首先我对本设计进行总体的分析，使自己有一个大致的总体概念，然后仔细分析CA6140车床，对车床主运动和进给运动还有其它的辅助运动进行分析。最后根据控制电路的线路图，编译PLC的梯形图，编译通过后利用PLC试验台进行实验仿真。因此使CA6140车床在完成原有的功能能特点外，还具有安装简便、稳定性好、易于维修、扩展能力强等特点。

关键词：可编程控制器；CA6140车床；梯形图；电气控制

Abstract

Programmable controller is in the electric control and computer technology, and on the basis of developed gradually to the processor as its core, including microelectronics technology, automation technology, computer technology communication technology for an organic whole, with industrial automation control as the goal of the new control device. It is simple in structure, convenient programming and high reliability etc, are widely used in industrial process and the location of the automatic control. According to the statistics, the programmable controller is used in the industrial automation devices a kind of most equipment. Experts think, programmable controller will be the major means of industrial control and important basic equipment is one of PLC, robots, CAD/CAM will become industrial production the three pillars. Due to the use of PLC has the characteristics of strong adaptability to the environment, and the internal timer is very rich in resources.

It is the main functions: control function, data collection, storage and processing functions, communications, networking, an input/output interface processing functions, man-machine interface function. In the system structure, but by a computer with many sets of PLC constitute \"the centralized management, the distributed control\" of the distributed control network, so complete a large-scale complex control.

The main content of the design is to use PLC (Programmable Logic Controller) to CA6410 type electrical parts of the lathe furnace. First I this design of the overall analysis, make oneself have a general overall concept, and careful analysis CA6140 lathe, on the lathe Lord sports and sports and the other in auxiliary motion analysis. According to the control circuit of the circuit diagram and compile PLC ladder diagram, compile using PLC after test experimental simulation. So make CA6140 lathe in the function of the completed the original characteristics outside, still have easy installation, good stability, easy maintenance, expansion capability etc. Characteristics.

Keywords:programmable controller; CA6140 lathe; Ladder diagram; Electrical control