【正文】 ................................................................................................................................3前言 ......................................................................................................................................................4目　　 錄 ..............................................................................................................................................5第一章 基 礎(chǔ) 知 識(shí) ........................................................................................................................7 畢業(yè)設(shè)計(jì)—無(wú)模壓力成形機(jī)電機(jī) PLC 控制2 概述 ......................................................................................................................................7 基本概念 ...................................................................................................................7 技術(shù)特點(diǎn) ...................................................................................................................8 技術(shù)基礎(chǔ)與水平 .......................................................................................................9 多點(diǎn)成形理論 ......................................................................................................................9 技術(shù)的特點(diǎn) ..........................................................................................................................9 技術(shù)發(fā)展概況 ....................................................................................................................10 實(shí)用技術(shù)開(kāi)發(fā)和應(yīng)用前景 ................................................................................................11第二章 無(wú)模多點(diǎn)成形壓力機(jī) PLC控制系統(tǒng)硬件原理及選取 ......................................................12 PLC 原理及選取 ...............................................................................................................12 PLC 簡(jiǎn)介 ................................................................................................................12 PLC 內(nèi)部原理 ........................................................................................................13 PLC 的工作原理 .................................................................................................16 PLC 機(jī)型的選擇方法 ............................................................................................18 畢業(yè)設(shè)計(jì)—無(wú)模壓力成形機(jī)電機(jī) PLC 控制3 無(wú)模多點(diǎn)成形壓力機(jī) PLC 選擇及參數(shù) ..............................................................19 步進(jìn)電動(dòng)機(jī)驅(qū)動(dòng)器基本原理及選取 ...............................................................................21 步進(jìn)電動(dòng)機(jī)驅(qū)動(dòng)器基本原理 ................................................................................21 步進(jìn)電機(jī)驅(qū)動(dòng)器選取方法 ....................................................................................25 步進(jìn)電機(jī)驅(qū)動(dòng)器選取 ............................................................................................26 步進(jìn)電動(dòng)機(jī)基本原理及選取 ...........................................................................................31 步進(jìn)電機(jī)簡(jiǎn)介 ........................................................................................................31 步進(jìn)電動(dòng)機(jī)的發(fā)展歷史 ........................................................................................32 步進(jìn)電動(dòng)機(jī)的特色 ................................................................................................32 步進(jìn)電機(jī)的一些基本參數(shù) .....................................................................................33 步進(jìn)電機(jī)的選擇方法 ............................................................................................35 無(wú)模壓力成形機(jī)步進(jìn)電機(jī)的選擇 ........................................................................38 接近開(kāi)關(guān)原理 ....................................................................................................................39 工作原理 ................................................................................................................39 接近開(kāi)關(guān)工作流程 ................................................................................................40 畢業(yè)設(shè)計(jì)—無(wú)模壓力成形機(jī)電機(jī) PLC 控制4第三章 無(wú)模多點(diǎn)成形壓力機(jī) PLC控制系統(tǒng)設(shè)計(jì)思路 ..................................................................40 PLC 控制系統(tǒng)優(yōu)點(diǎn) ...........................................................................................................40 PLC 控制步進(jìn)電機(jī)原理介紹 ...........................................................................................42 無(wú)模多點(diǎn)成形壓力機(jī) PLC 控制系統(tǒng)原理 .....................................................................44 系統(tǒng)原理簡(jiǎn)介 ........................................................................................................44 PLC 程序 ................................................................................................................45結(jié)論 ....................................................................................................................................................49謝辭 ....................................................................................................................................................50參考文獻(xiàn) ............................................................................................................................................51附 錄一 ................................................................................................................................................51 畢業(yè)設(shè)計(jì)—無(wú)模壓力成形機(jī)電機(jī) PLC 控制5第一章 基 礎(chǔ) 知 識(shí)本章介紹無(wú)模多點(diǎn)成形壓力機(jī)的有關(guān)知識(shí)、技術(shù)的特點(diǎn)及發(fā)展概況、多點(diǎn)成形理論、實(shí)用技術(shù)開(kāi)發(fā)和應(yīng)用前景等基礎(chǔ)理論知識(shí)，這是學(xué)習(xí)本書后續(xù)內(nèi)容的必要準(zhǔn)備。 畢業(yè)設(shè)計(jì)—無(wú)模壓力成形機(jī)電機(jī) PLC 控制6 概述 基本概念無(wú)模多點(diǎn)成形壓力機(jī)是傳統(tǒng)模具成形生產(chǎn)方式的重大創(chuàng)新。使用該項(xiàng)產(chǎn)品，不需要模具，可以省去模具的設(shè)計(jì)、制造和調(diào)試工序，節(jié)約制造模具的材料、工具、能源和時(shí)間等，將生產(chǎn)準(zhǔn)備時(shí)間縮短為模具成形時(shí)的幾十分之一。該機(jī)應(yīng)用范圍廣泛，可滿足各種行業(yè)板類件的加工需要，可用于高速列車流線型車頭、飛機(jī)、各種車輛、航天器、輪船艦艇和壓力容器等外殼的制造，還可用于葉片類、金屬雕塑類、裝飾類等零部件的曲面成形。該技術(shù)利用一系列規(guī)則排列的、高度可調(diào)的基本體，通過(guò)對(duì)各基本體運(yùn)動(dòng)的實(shí)時(shí)控制，自由地構(gòu)造出成形面，實(shí)現(xiàn)板材的三維曲面成形。傳統(tǒng)成形和無(wú)模多點(diǎn)成形的區(qū)別如（圖 1 畢業(yè)設(shè)計(jì)—無(wú)模壓力成形機(jī)電機(jī) PLC 控制71）所示：板材無(wú)模多點(diǎn)成形系統(tǒng)是以計(jì)算機(jī)輔助設(shè)計(jì)與輔助制造技術(shù)為主要手段的