【正文】 洛陽理工學(xué)院畢業(yè)設(shè)計（論文） I T68 臥式鏜床電氣控制的 PLC 設(shè)計 改造 摘 要 本課題探討了 T68 型臥是式鏜床的 PLC 改造控制系統(tǒng)的實(shí)現(xiàn)方案。根據(jù)實(shí)際需要和市場的需求，選擇了以三菱公司的可編程控制器作為控制方案。 鏜床是冷加工中使用比較普遍的設(shè)備它主要用于加工精度、光潔度要求較高的孔以及各孔間的距離要求較為精確的零件（如一些箱體零件），屬于精密機(jī)床 [19]。主要用于加工工件上的精密圓柱孔。這些孔的軸心線往往要求嚴(yán)格地平行或垂直，相互間的距離也要求很準(zhǔn)確。其原控制電路為繼電器控制，接觸觸點(diǎn)多、線路復(fù)雜、故障多、操作人員維修任務(wù) 較大，為了克服以上缺點(diǎn)，降低設(shè)備故障率，提高 設(shè)備使用效率，針對這種情況，我們用 PLC 控制改造其繼電器控制電路。 通過對 T68 型臥式鏜床工作原理的分析，設(shè)計出 PLC 改造系統(tǒng)的控制電路，對系統(tǒng)的輸入、輸出點(diǎn)進(jìn)行統(tǒng)計，共有 24 個輸入點(diǎn)， 24 個輸出點(diǎn)，輸入輸出都是開關(guān)量 [20]。選用日本三菱公司生產(chǎn)的 FX2N48MR 可編程序控制器，分配 PLC 的I/O 地址，設(shè)計 PLC 外圍電路，確定 PLC 的 I/O 接線圖。根據(jù)鏜床的控制要求和特點(diǎn)，列出邏輯代數(shù)表達(dá) 式 ，采用邏輯設(shè)計方法進(jìn)行梯形圖設(shè)計。 最終 達(dá)到了系統(tǒng)改造的要求，并且運(yùn)行效 果良好。 關(guān)鍵詞： 可編程控制器 ， T68 鏜床 ， 梯形圖 ， 改造 洛陽理工學(xué)院畢業(yè)設(shè)計（論文） II 英文題目 ABSTRACT T68 HORIZONTAL BORING MACHINE PLC ELECTRICAL DESIGN CONTROLLED TRANSFORMATION ABSTRACT T68 of the topics discussedis the type Horizontal Boring Machine transformation of the PLC program control system. According to actual needs and the needs of the market, Mitsubishi has chosen the pany39。s programmable logic controller as a control. Boring is the more mon use of cold working of the equipment it is mainly used for precision machining, finish the hole and the higher the distance between the holes require a more precise parts (such as some of tank parts), are precision machine tool. Mainly used for precision machining of cylindrical workpieces on the hole. Axis line of these holes tend to demand strict parallel or perpendicular to the distance between each other also requires very accurate. Its original control circuit for the relay control, contactcontact and more plex circuits, fault and more the operator a larger maintenance tasks, in order to overe the shortings of the above, reducing the failure rate of equipment to improve efficiency in the use of the equipment, in view of this situation, we to transform their use of PLC control relay control circuit. T68 through horizontal boring machine working principle of the analysis, design of PLC control circuit transformation system, the system input and output points to statistics, a total of 24 input, 24 output points are input and output switch. Japan39。s Mitsubishi pany selected the FX2N48MR PLC, the distribution of PLC39。s I / O addresses, the design of peripheral circuits PLC, PLC to determine the I / O wiring diagram. Boring machine control in accordance with the requirements and 洛陽理工學(xué)院畢業(yè)設(shè)計（論文） III characteristics are listed in the logic of algebraic expressions, the use of ladder logic design methods design. Reached the final system requirements, and run well. KEY WORDS: programmable logic controller, T68 boring machine, ladder ,transform 洛陽理工學(xué)院畢業(yè)設(shè)計（論文） IV 目 錄 前 言 ....................................................................................................... 1 第 1 章 T68 臥式鏜床的結(jié)構(gòu) .............................................................. 2 T68 臥式鏜床的結(jié)構(gòu)與工作特點(diǎn) ............................................ 2 T68 型臥式鏜床的結(jié)構(gòu) ................................................... 2 鏜床運(yùn)動對電氣控制電路的要求 [12] .......................... 3 第 2 章 T68 臥式鏜床 PLC 控制總體方案設(shè)計 .................................. 4 T68 臥式鏜床控制系統(tǒng)簡介 .................................................. 4 電氣控制線路的特點(diǎn) ..................................................... 4 T68 臥式鏜床電氣原理 .......................................................... 4 T68 臥式鏜床控制方案選擇 .................................................. 4 PLC 的選擇與應(yīng)用 .................................................................... 5 PLC 的選擇 ...................................................................... 5 PLC 的應(yīng)用特點(diǎn) .............................................................. 6 可編程控制器的安裝與維護(hù) ......................................... 7 第 3 章 T68 臥式鏜床 PLC 控制系統(tǒng)硬件設(shè)計 .................................11 PLC 接口分析及接線方式設(shè) 計 ...............................................11 控制單元設(shè)計 ...........................................................................11 第 4 章 T68 臥式鏜床系統(tǒng)軟件設(shè)計 ................................................... 17 控制流程設(shè)計 .......................................................................... 17 主軸正轉(zhuǎn)低速 ........................................................................ 17 主軸正轉(zhuǎn)高速 ........................................................................ 17 主軸正轉(zhuǎn)點(diǎn)動 ........................................................................ 17 主軸反轉(zhuǎn)低速 ........................................................................ 18 主軸反轉(zhuǎn)高速 ........................................................................ 18 主軸反轉(zhuǎn)點(diǎn)動 ........................................................................ 18 正向反接制動 ........................................................................ 18 反向反接制動 ........................................................................ 19 主軸變速和進(jìn)給變速控制 ................................................... 19 洛陽理工學(xué)院畢業(yè)設(shè)計（論文） V 聯(lián)鎖保護(hù)裝置 ...................................................................... 21 T68 鏜床 PLC 改造梯形圖 ..................................................... 21 助記符語言 ............................................................................... 21 第 5 章 操作界面及仿真 .................................................................... 25 操作界面設(shè)計 ........................................................................ 25 系統(tǒng)運(yùn)作仿真 ........................................................................... 25 結(jié) 論 ..................................................................................................... 26 謝 辭 ....................................................................................................... 27 參考文獻(xiàn) ................................................................................................. 28 附 錄 ................................................................................................ 30 外 文資料翻譯 ....