【正文】 本科生畢業(yè)設(shè)計(jì)（論文） 題 目： 磨床 PLC 控制系統(tǒng)設(shè)計(jì) 姓 名： 學(xué) 號： 學(xué) 院： 電氣工程與自動化學(xué)院 專 業(yè)： 電氣工程與自動化（電氣方向） 年 級： 指導(dǎo)教師： （簽名） 20XX 年 6 月 1 日 I 磨床 PLC 控制系統(tǒng)設(shè)計(jì) 摘 要 磨床是利用磨具對工件表面進(jìn)行磨削加工的機(jī)床。 普通磨床的電氣系統(tǒng)由液壓系統(tǒng)、砂輪、冷卻泵和電磁吸盤以及照明電路部分組成。隨著在現(xiàn)代化工業(yè)生效率的不斷提升，磨床在加工精度、自動化程度、加工的集約性等方面的要求不斷提高，傳統(tǒng)磨床難以滿足現(xiàn)代化的加工工藝要求。傳統(tǒng)磨床在控制方面采用繼電器 — 接觸器電氣控制系統(tǒng)過于復(fù)雜繁瑣，且由于觸點(diǎn)多、故障率高、可靠性差、體積大等缺點(diǎn)，正逐漸被淘汰。 可編程控制器 PLC 是微機(jī)技術(shù)與傳統(tǒng)的繼電接觸控制技術(shù)相結(jié)合的產(chǎn)物，它克服了繼電接觸控制系統(tǒng)中的機(jī)械觸點(diǎn)的接線復(fù)雜、可靠性低、功耗高、通用性和靈活性差的缺點(diǎn)，充分利用了微處理器的優(yōu)點(diǎn)。 利用 PLC 控制磨床運(yùn)行， 使線路得到簡化，可靠性提高，響應(yīng)速度明顯加快，精確度更準(zhǔn)確 ； 實(shí)現(xiàn)了磨床啟動、停止、故障停止、緊急停止的功能，可根據(jù)運(yùn)行要求靈活切換磨床的控制方式；提供過載，輕載，斷相和電壓不平衡保護(hù)；現(xiàn)場顯示運(yùn)行狀態(tài)，實(shí)現(xiàn)智能化監(jiān)控。節(jié)省大量的繼電器元件 ,使機(jī)床的工作效率更高。 本文以 M7120 平面磨床為例，主要介紹對磨床控制系統(tǒng)的 PLC 改造。 關(guān)鍵詞：平面磨床， PLC，控制系統(tǒng) II Grinding Machine PLC Control System Design ABSTRACT The grinder is the use of abrasive on the workpiece surface grinding machine tool. Plain grinding machine electrical system from the hydraulic system, the grinding heel, cooling pump and electromagic sucker and lighting circuit part. In modern industrial production efficiency with rising, grinder in the processing precision, automation, such as processing intensive requirements continue to increase, the traditional grinding machine can not meet the requirements of modern processing technology. In traditional grinding in control using a relay contactor electrical control system is too plicated, and because the contact number, high failure rate, low reliability, large volume and other shortings, are gradually being phased out. PLC is the puter technology and traditional relay contact control technology bined with the product, it has overe the relay contact control system in mechanical contact of the plex wiring, low reliability, high power consumption, universality and flexibility of the shortings of the poor, make full use of the advantages of a microprocessor. Use of PLC control grinding machine running, so the circuit is simplified, improved reliability, response speed to be accelerated apparently, the accuracy is more accurate。 the grinder start, stop, failure to stop, emergency stop function, be under the operational requirements of the control switch grinder flexible。 with light load, overload, open phase and voltage unbalance protection。 field display running state, intelligent monitoring and save a lot of relay ponents. The machine has higher working efficiency. Based on the M7120plane grinding machine as an example, introduces the grinding machine control system 39。s PLC transformation. Key words: surface grinding machine， PLC， control system III 目錄 摘 要 .......................................................................................................................... I ABSTRACT ............................................................................................................... II 第 1 章 緒論 ................................................................................................................. 1 課題的背景及其意義 .................................................................................... 1 課題研究的現(xiàn)狀及發(fā)展趨勢 ........................................................................ 1 平面磨床發(fā)展現(xiàn)狀 ............................................................................. 1 發(fā)展呈現(xiàn)三大變化 .............................................................................. 2 第 2 章 M7120 平面磨床的結(jié)構(gòu)及功能 ...................................................................... 3 平面磨床的主要結(jié)構(gòu)及運(yùn)動方式 ................................................................ 3 M7120 平面磨床的主要結(jié)構(gòu) .............................................................. 3 M7120 平面磨床的運(yùn)動形式 .............................................................. 3 M7120 平面磨床的電力拖動特點(diǎn)及控制特點(diǎn) ............................................. 4 電力拖動特點(diǎn) ..................................................................................... 4 M7120 磨床控制特點(diǎn) .......................................................................... 4 M7120 平面磨床的電氣控制