机床数控技术(第2版)

目 录
第1 章 数控技术概述 ···································································································.1
1.1 机床数控技术的基本概念 ·······················································································.2
1.2 数控机床的组成及工作原理 ····················································································.2
1.2.1 数控机床的组成 ·························································································.2
1.2.2 数控机床的工作原理 ···················································································.5
1.3 数控机床的分类 ···································································································.7
1.3.1 按工艺用途分类 ·························································································.7
1.3.2 按运动轨迹分类 ·······················································································.10
1.3.3 按伺服控制分类 ························································································.11
1.3.4 按功能水平分类 ·······················································································.13
1.3.5 按联动轴数分类 ·······················································································.14
1.4 数控机床的特点及应用范围 ··················································································.17
1.4.1 数控机床的特点 ·······················································································.17
1.4.2 数控机床的应用范围 ·················································································.18
1.5 数控机床的发展概况与发展趋势 ············································································.18
1.5.1 数控机床的发展概况 ·················································································.18
1.5.2 数控机床的发展趋势 ·················································································.20
思考与练习 ··············································································································.28
第2 章 计算机数控系统 ·····························································································.29
2.1 概述 ················································································································.30
2.1.1 CNC 系统的组成 ······················································································.30
2.1.2 CNC 系统的功能 ······················································································.30
2.1.3 CNC 系统的一般工作过程 ··········································································.33
2.2 CNC 系统的硬件结构 ··························································································.35
2.2.1 单CPU 结构CNC 系统 ··············································································.35
2.2.2 多CPU 结构CNC 系统 ··············································································.37
2.3 CNC 系统的软件结构 ··························································································.38
2.3.1 CNC 系统的软/硬件功能界面 ······································································.38
2.3.2 CNC 系统的软件结构特点 ··········································································.39
2.3.3 CNC 系统的软件结构模式 ··········································································.42
2.4 可编程控制器 ····································································································.43
2.4.1 概述 ······································································································.43
2.4.2 PLC 在数控机床上的应用 ···········································································.48
2.5 插 补 ··········································································································.56
2.5.1 插补的定义 ·····························································································.56
2.5.2 对插补器的基本要求 ·················································································.56
2.5.3 插补方法的分类 ·······················································································.57
2.5.4 主要的插补方法 ·······················································································.58
2.6 刀具半径补偿 ··································································································