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1、毕业生论文YT4543型组合机床动力滑台液压系统的PLC改造年月摘要组合机床是由通用部件和部分专用部件组成的高效、专用、自动化程度较高的机床。动力滑台是组合机床的一种通用部件。本课题涉及到的YT4543型原有组合机床液压动力滑台的电气部分采用继电器控制系统，存在可靠性不高，故障发生率高，维护困难；继电器线路接线复杂；若工艺流程改变，则需要改变相应的继电器控制系统的接线等问题。由于可编程序控制器具有较高的可靠性，控制过程中能得到良好的控制精度，以及能够轻而易举地实现工业自动化；另外，还具有易维护，操作简便等一系列优点。可编程序控制器在现代工业中得到了大量而广泛的应用。本课题正是基于以上原因，从实
2、际应用的角度出发，以可编程序控制器（PLC）为基础，以YT4543型原有组合机床液压动力滑台为改造对象，在深入了解YT4543型原有组合机床液压动力滑台工作原理的基础上，利用性能优良、价格合理的三菱FXos-30MR-D超小型PLC对YT4543型原有组合机床液压动力滑台实施改造，形成PLC控制的组合机床液压动力滑台。从而克服了原有缺点，提高了机床的可靠性，同时给系统的维护和改进带来了很大方便。实践证明，通过改进，既可提高系统的可靠性，又可以通电编程，灵活改变其控制顺序，达到了应用的目的，取得了良好的工作性能和经济效益。关键词：可编程控制 继电器 液压动力滑台Abstract:The comb
3、ination machine bed constitute efficiently with parts of appropriations parts from the in general use parts, appropriation, automation higher machine in degree bed.The slippery set in motive is a kind of in general use parts to combine the machine bed.This lesson a the type of YT4543 for involving c
4、ombines originally possessed the motive that machine bed liquid press electricity part adoption slips the set to control the system after the electric appliances, exsitting the dependable is not high, breaking down to take place the rate high, maintenance difficulty;Connect the line complicacy after
5、 the electric appliances circuit;If the craft process changes, then need the changes homologous control after the electric appliances the system connect line etc. problem.Because the programmable preface controller has the higher and dependable, the control process inside can get the good control ac
6、curacy, and can realizes easily industry automation;Moreover, still have the easy maintenance, operate a series of advantage in simple etc.The programmable preface controller got large quantity in modern industry but extensive application.In this lesson a foundation for exactly according to above re
7、ason, from the actual and applied angle setting out, regarding programmable preface controller( PLC ) as foundation, with the type of YT4543 originally possessed combining machine bed liquid pressing slippery set in motive is reforming object, in the thorough understanding YT4543 type originally pos
8、sessed combining machine bed liquid pressing slippery set in motive working principle, make use of the function good, the super and small scaled PLC in MRs FXos-30s- Ds in reasonable Mitsubishi in price combines the machine bed originally possessed to the type of YT4543 the liquid presses the slippe
9、ry set in motive puts reform into practice to, the combination machine that become the PLC control the bed liquid presses the slippery set in motive.From but overcame the weakness originally possessed, increases the dependable of the machine bed, give the maintenance of the system with improved to b
10、ring at the same time not stingy then.Practice the proof, pass the improvement, since can increase the dependable of the system, can switch on electricity to weave the distance again, vivid change its control is in proper order, coming to a the applied purpose, obtaining the good work function with
11、the economic performance.Key words: programmable control relay hydraulic power sliding stand目录第一章 绪论61.1 组合机床液压系统 61.1.1 概述 61.1.2 YT4543型动力滑台液压系统特点 61.2可编程控制器(PLC)引论 7 1.2.1可编程控制器的产生、发展与展望 71.2.2可编程控制器的定义与分类 101.2.2.1 可编程控制器的定义 101.2.2.2可编程控制器的分类111.2.3可编程控制器的特点和应用范围121.2.4可编程控制器的主要技术性能15第二章 控制系统工作
12、原理152.1 YT4543型动力滑台液压系统工作原理162.2 可编程控制器的工作原理182.2.1可编程控制器的基本组成182.2.2 可编程控制器的基本原理182.2.2.1 PLC的系统工作过程192.2.2.2 PLC的扫描工作方式与程序执行过程202.2.2.3 PLC的I/O响应滞后问题222.2.2.4 PLC的中断242.3 编程器和编程软件25第三章PLC控制系统设计263. 1控制内容的确定263. 2控制方案的确定293. 3 输入信号的确定313. 4 控制对象的确定31第四章 硬件系统设计324.1 PLC型号的确定324.2 FXos-30MR-D资源及性能33第
13、五章软件设计345.1主程序设计345.2 梯形图355.3 由梯形图转化出系统的指令程序385.4 PLC外部接线图40第六章 结论与展望406.1 结论406.2 展望40参考文献41致谢41第一章 绪论1.1 组合机床液压系统1.1.1 概述组合机床是由通用部件和部分专用部件组成的高效、专用、自动化程度较高的机床。它能完成钻、扩、铰、镗、铣、攻丝等工序和工作台转位、定位、夹紧、输送等辅助动作，被广泛应用于大批量生产的机械加工流水线或自动线中，如汽车零部件制造中的许多生产线。这里只介绍组合机床动力滑台液压系统。动力滑台是组合机床的一种通用部件。动力滑台上常安装着各种旋转着的刀具，其液压系统的功用是使这些刀具作轴向进给运动，并完成一定的
