基于PLC的机床电气控制系统设计说明书.doc

word文档整理分享 参考资料 基于PLC的机床电气控制系统设计 摘要：我们在各种场合看到了继电-接触器控制，那已经是时代的过去，如今的继电器只能作为低端的基层控制模块或者简单的设备中使用到，而PLC的出现也成为了划时代的主题，通过比较稳定的硬件穿插灵活的软件控制，使得自动化走向了新的高潮。 本课题利用西门子S7-200PLC对T68镗床原有的继电-接触器控制系统进行了改造；阐述了系统改造方案，同时根据镗床的控制要求和特点，确定PLC的输入、输出分配，设计出梯形图并进行了模拟调试。 关键词：西门子PLC；镗床；改造 The design of electric control system for machine tool based on PLC Abstract We come in sight of the control that links after the electric appliances in various situation, that is already the that time generation past, now of after use in the mold a perhaps simple equipments of grass-roots control that the electric appliances can do for the low level only,And the PLC emergence also became the epoch-making topic, adding the vivid software control through a very and stable hardware, making the automation head for the new high tide. This text use the Siemens S7-200 PLC to reform the T68 boring lathe．The system reformation project is described in detail．The PLC importation and input/output allotment are ensured according to the control requirement and characteristics of the boring lathe．A control circuit is designed and commissioned in the simulation． Keywords：Siemens PLC；boring lathe；reformation 参考资料 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc263894864 第一章绪论 PAGEREF _Toc263894864 \h 1 HYPERLINK \l _Toc263894865 1.1 PLC技术背景 PAGEREF _Toc263894865 \h 1 HYPERLINK \l _Toc263894866 1.2 PLC的系统结构 PAGEREF _Toc263894866 \h 1 HYPERLINK \l _Toc263894867 1.2.1 软PLC开发系统 PAGEREF _Toc263894867 \h 2 HYPERLINK \l _Toc263894868 1.2.2 软PLC运行系统 PAGEREF _Toc263894868 \h 2 HYPERLINK \l _Toc263894869 1.3 PLC技术应用的优势 PAGEREF _Toc263894869 \h 3 HYPERLINK \l _Toc263894870 1.4 PLC控制与微机控制的区别 PAGEREF _Toc263894870 \h 4 HYPERLINK \l _Toc263894871 第二章T68机床的用途、主要结构和运动 PAGEREF _Toc263894871 \h 5 HYPERLINK \l _Toc263894872 第三章电力拖动方式和控制要求 PAGEREF _Toc263894872 \h 8 HYPERLINK \l _Toc263894873 3.1 机床的电力拖动方式 PAGEREF _Toc263894873 \h 8 HYPERLINK \l _Toc263894874 3.2 T68型卧式镗床运动对电气控制电路的要求 P