C650普通车床数控改造PMC控制系统研究设计(SINUMERIK).doc

C650普通车床数控改造PMC控制系统研究设计（SINUMERIK） Research and Design for C650 Common Lathes Numerical Control Reconstruction on PMC Control System （SINUMERIK） 专业班级 学生姓名 指导教师 系 别 PAGE 摘 要 更新改造旧机床是最近几年发展起来的一个新兴产业，该设计是基于西门子数控系统，对C650普通车床进行数控化改造中的PLC控制部分研究设计。 采用连线少、体积小、功耗小、控制速度快、可靠性高、功能完善的PLC控制系统，来代替电气控制系统中继电器控制逻辑，配以合适的数控系统，可使机床控制功能更加丰富，自动化水平大大提高。 此次设计从被控对象的I/O点数和性价比高、综合成本低这几个主要原则出发，采用西门子的802D数控系统和西门子的S7-200的PLC作为机床数控改造设计的控制装置。 主要进行了控制装置选型， PLC的地址分配和用梯形图编辑的PLC控制程序设计。 改造后的机床在实现机床原有功能的基础上还增加了自动加工、自动换刀等多种功能。 关键词：数控改造；继电器；PLC；梯形图 ABSTRACT Retrofitting obsolete old machine tools is an industry developed in the recent years, this design makes a reconstruction towards PLC of C650 tradition machine tools based on SINUMERIK numerical control system. My purpose is to use the state of PLC memorizer unit to replace the relay mechanical touch in series or parallel connection in electric control system, Systems controlled by PLC have few line connected and small cubage, little power cost and high control speed as well as precision, and that PLC have count function, which the electric control system don’t have commonly. This design choose SINUMERIK 802D numerical control system and SINUMERIK S7-200 on the principle of the number of I/O spot in object controlled and high performance to price ratio and low comprehensive cost. PLC’s address distribution and PLC control edited by ladder diagram is mainly designed. On the basis of carrying out machine tools’ intrinsic functions, other functions such as automatic machining and automatic tool change is added after reconstruction. Keywords: digital control reconstruction; relay; PLC; ladder program 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc201221327 1 绪论 PAGEREF _Toc201221327 \h 1 HYPERLINK \l _Toc201221328 1.1 普通机床改造的意义和前景 PAGEREF _Toc201221328 \h 1 HYPERLINK \l _Toc201221329 1.2 PLC的基础知识 PAGEREF _Toc201221329 \h 3 HYPERLINK \l _Toc201221330 1.3 PLC控制系统与电气控制系统的比较 PAGEREF _Toc201221330 \h 4 HYPERLINK \l _Toc201221331 2 C650普通车床电气控制概述 PA