自动化学院
本科毕业设计（论文）
题目：
基于三菱电机E60数控车床
电气控制电路设计
Graduation Design (Thesis)
Based on The Mitsubishi Electric E60 CNC Lathe Electrical Control Circuit Design
By MA Shaodong
Supervised by Prof. YU Hanqi Lecturer QIAN Houliang
School of Automation Nanjing Institute of Technology
June, 2014
摘 要
数控技术是现代制造业机电一体化的核心，其水平高低关系到生产力的发展状况，在如今社会发挥着越来越重要的作用。而数控机床是数控技术的重要运用，是先进制造技术的重要装备。
本论文的主要任务是将三菱数控系统（E60）应用在数控车床上。课题以普通数控车床电气控制系统开发设计为研究任务，分析三菱电机数控系统结构特征和工作原理，对E60数控系统进行深入研究。通过三菱E60数控系统的硬件连接与系统的PLC控制程序的编写，实现车床X、Z轴的进给，主轴的旋转以及油泵冷却等基本功能。
本论文主要成果包括：三菱E60数控系统的硬件连接，包括控制单元连接、I/O单元连接等；数控车床的电气原理图的绘制，包括强电回路、控制回路等；系统控制PLC程序的设计，以此实现车床的多种功能；软件GX-Developer的运用，来实现计算机与数控系统的通信等。
关键词：三菱E60；数控车床；电气控制；三菱PLC
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ABSTRACT
Numerical control technology is the core of the modern manufacturing mechanical and electrical integration and its level is related to the development of productive forces . Now it is playing an increasingly important role in today's society. NC machine tools is an important use of numerical control technology ，and it is an important equipment of advanced manufacturing technology.
The duty of my thesis is using the Mitsubishi CNC system (E60) in CNC lathe. Its research task is the development and design of the common NC lathe electrical control system, and then analyzing Mitsubishi CNC system structure characteristics and working principle so that I can have a profound understanding of E60. Realizing the lathe’s feeding of X and Z axis, the rotation of the spindle and the basic function such as oil pump cooling through the Mitsubishi E60 CNC system hardware connection and the writing of the PLC control program.
The main achievements of this thesis include the following aspects. Firstly, the Mitsubishi E60 CNC system hardware connection, including the connection of control unit and I/O units. Besides, the Numerical control lathe electrical schematic drawing, including heavy current of main circuit, control circuit, etc. What’s more, the PLC program design of system control to achieve a variety of lathe functions. Using the software GX-Developer to achieve the communication with the computer numerical control systems and so on.
Key words: Mitsubishi E60; Numerical control lathe; Electrical control; Mitsubishi PLC
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目 录
第一章 绪 论 ............................................................................................ 1
1.1 引言 .................................................................................................................. 1 1.2 选题背景与意义 .............................................................................................. 1 1.3 研究现状 .......................................................................................................... 2 1.4 理论基础 .......................................................................................................... 3
1.4.1 CNC数控基本概念 ............................................................................... 3 1.4.2 数控车床的组成 .................................................................................... 3 1.4.3 数控车床的分类 .................................................................................... 4 1.4.4 数控技术的发展简介 ............................................................................ 8 1.4.5 三菱数控系统的优点 ............................................................................ 9 1.5 三菱E60数控系统的介绍 ............................................................................. 9
1.5.1 三菱数控产品简介 ................................................................................ 9 1.5.2 E60数控系统简介 ............................................................................... 10
第二章 三菱E60数控系统的硬件连接 ............................................... 11
2.1 设备间的连接 ................................................................................................ 11
2.1.1 E60总系统图 ....................................................................................... 11 2.1.2 控制单元的连接 .................................................................................. 12 2.1.3 显示单元的连接 .................................................................................. 13 2.1.4 手动脉冲发生器的连接 ...................................................................... 14 2.2 I/O界面的连接 .............................................................................................. 15
2.2.1 I/O界面概略 ........................................................................................ 15 2.2.2 基本I/O单元的连接系统 .................................................................. 15 2.2.3 基本I/O单元与控制面板的连接 ...................................................... 17 2.2.4 基本I/O单元伺服驱动单元的连接 .................................................. 17 2.2.5 基本I/O单元电源的连接 .................................................................. 18
第三章 数控车床电气原理图设计 ........................................................ 19
3.1 数控车床电气控制方案设计概述 ................................................................ 19
3.1.1 电气系统框图设计 .............................................................................. 19 3.1.3 主轴变频器的确定 .............................................................................. 21 3.2 车床电气原理图设计 .................................................................................... 21
3.2.1 强电主回路的设计 .............................................................................. 21 3.2.2 控制回路电路图 .................................................................................. 23 3.2.3 伺服电路电气设计 .............................................................................. 24
第四章 数控车床PLC控制程序设计 ................................................... 25
4.1 数控系统的系统构成 .................................................................................... 25 4.1.1 PLC开发时的系统构成 ...................................................................... 25 4.1.2 系统信号流程图 .................................................................................. 26
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