ANYANGINSTITUTEOFTECHNOLOGY本科毕业论文PLC控制立式单面前轴主销孔上下面组合机床设计Thedesignofsingle-sidedverticalcombinedmachinetoolmillingtheupperandlowersurfaceoftheshiftmainpinholebasedonPLCcontrol系（院）名称：专业班级：级自动化班学生姓名：指导教师姓名：指导教师职称：目录摘要.............................................................3Abstract.........................................................4引言..........................................................5第一章绪论...................................................61.1课题背景.............................................................61.2机床的电气控制系统...................................................61.2.1电气控制系统的组成.............................................71.2.2机床电力拖动自动控制系统......................................8第二章机床电气控制系统设计的总体方案............................82.1组合机床概述..........................................................82.2立式单面前轴主销孔上下面组合机床及其构成.............................82.2.1机床的床身....................................................92.2.2电气控制柜...................................................102.2.3液压站........................................................112.3立式单面前轴主销孔上下面组合机床的加工过程.........................112.4机床加工过程的控制要求.............................................122.5PLC电气控制系统的选定............................................一三2.5.1电气控制系统设计的任务和内容...............................一三2.5.2电气控制系统设计的原则.....................................一三2.5.3PLC控制方案的选择.........................................一三第三章PLC电气控制系统的设计..................................一五3.1PLC简介...........................................................一五3.1.1可编程控制器的结构和工作原理...............................一五3.1.2三菱FX2N系列PLC及其指令.....................................163.2PLC电气控制设计思想................................................163.2.1PLC控制系统设计的基本原则....................................173.2.2PLC控制系统设计的基本内容与步骤..............................17第四章PLC的选择..............................................一八4.1PLC机型的选择....................................................一八4.2输入/输出的选择..................................................一八4.2.1系统I/O点数的估算..........................................一八4.2.2输入输出模块的选择...........................................194.3内存估计...........................................................204.3.1内存利用率...................................................204.3.2开关量输入输出点数...........................................204.3.3模拟量输入输出点数...........................................214.3.4程序编写质量.................................................214.4选用合适的PLC......................................................214.4.1确定输入/输出设备及PLC.......................................214.4.2分配I/O端口..................................................22第五章PLC电气控制系统硬件电路的设计............................235.1电气原理图设计.....................................................235.1.1主电路设计...................................................235.1.2控制回路的设计...............................................245.2选择控制系统电气元件.......
