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機(jī)械手的plc控制系統(tǒng)設(shè)計(jì)-免費(fèi)閱讀

  

【正文】 Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), 濟(jì)源職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計(jì) 33 drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. The supersonic descent could happen as early as Sunda. The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。嫌惡過(guò)自己的怯懦,最終卻發(fā)現(xiàn)有很多緣分 ,有很多錯(cuò)過(guò),好像冥冥之中真的已經(jīng)注定。 Then in high school, think don39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Age has reached the end of the beginning of 濟(jì)源職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計(jì) 29 a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。讓我深刻的認(rèn)識(shí)到 :無(wú)論生活多么的艱辛 ,惟有讀書(shū)才能夠充實(shí)我的頭腦 ,才會(huì)使 我 抵達(dá)成功的彼岸。從分析被控對(duì)象入手,經(jīng)確定輸入∕輸出設(shè)備,選擇 PLC,分配 I∕ O點(diǎn),設(shè)計(jì)軟件及硬件,到聯(lián)機(jī)調(diào)試,最后整理技術(shù)文件。 5上傳:?jiǎn)螕艄ぞ邫谥械纳蟼?,選擇程序塊、數(shù)據(jù)塊、系統(tǒng)塊等內(nèi)容后上載數(shù)據(jù)即可。若自動(dòng)方式解除,則應(yīng)將工作方式選擇開(kāi)關(guān)放至“單步操作”位置。 8)左旋轉(zhuǎn) : 機(jī)械手上升至上限位時(shí), 與 M107觸點(diǎn)接通,移位后, M110置“ 1”,M100~ M107置“ 0”, 線(xiàn)圈斷開(kāi),停止上升,同時(shí) ,左旋轉(zhuǎn)。 M103 觸點(diǎn)斷開(kāi) Y432 線(xiàn)圈,停止上升,同時(shí) M104觸點(diǎn)接通 ,執(zhí)行右旋轉(zhuǎn)動(dòng)作。方框的右邊畫(huà)出該步動(dòng)作的執(zhí)行元件。 手動(dòng)操作梯形圖 手動(dòng)操作方式由于不須要任何復(fù)雜的順序控制,可以用常規(guī)繼電器順序方法來(lái)設(shè)計(jì)梯形圖。 3)狀態(tài)器禁止轉(zhuǎn)化: 激活特殊輔助繼電器 M574,并用步進(jìn)指令控制狀態(tài)器轉(zhuǎn)換時(shí),狀態(tài)器的自動(dòng)轉(zhuǎn)換就被禁止。 梯形圖的總體設(shè)計(jì) 根據(jù)機(jī)械手的工作方式情況,在選擇“單步操作”方式時(shí),應(yīng)執(zhí)行“單步操作”程序;在選擇“返回原位”方式時(shí),應(yīng)執(zhí)行“返回原位”程序;在選擇“自動(dòng)”方式時(shí),應(yīng)執(zhí)行“自動(dòng)程序”,其中自動(dòng)程序要在按鈕按下時(shí)才能執(zhí)行。 I/O端子排可很容易地整體拆卸。 I/O 端子 還 可很容易地整體拆卸。所以,至少需要 6 個(gè)輸出信號(hào)。 為了使動(dòng)作準(zhǔn)確,機(jī)械手上安裝了限位開(kāi)關(guān) SQ1, SQ2 , SQ3, SQ4 分別對(duì) 機(jī)械手進(jìn)行下降,上升,左旋轉(zhuǎn),右旋轉(zhuǎn)等動(dòng)作限制,別給出了動(dòng)作到位信號(hào),另外還按上了光電開(kāi)關(guān), SP,負(fù)責(zé)檢查工作臺(tái) B上的工件是否移開(kāi)從而產(chǎn)生無(wú)工件信號(hào),為下一個(gè)工件的下放做準(zhǔn)備。在工作中若按下復(fù)位 按鈕,則機(jī)械手將繼續(xù)完成一個(gè)周期的動(dòng)作后,回到原點(diǎn)自動(dòng)停止。當(dāng)選擇夾緊/放松運(yùn)動(dòng)時(shí),按下啟動(dòng)按鈕,機(jī)械手夾緊;按下停止按鈕,機(jī)械手放松。因此,該設(shè)備的檢測(cè)元件有上、下、左、右四個(gè)限位開(kāi)關(guān)和一個(gè)無(wú)工件檢測(cè)的光電開(kāi)關(guān)。 濟(jì)源職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計(jì) 3 圖 機(jī)械手結(jié)構(gòu)示意圖 當(dāng)機(jī)械手右移到位并準(zhǔn) 備下降時(shí),為確保安全,必須在右工作臺(tái)上無(wú)工作時(shí)才允許機(jī)械手下降。 機(jī)械手的種類(lèi),按驅(qū)動(dòng)方式可分為液壓式、氣動(dòng)式、電動(dòng)式、機(jī)械式機(jī)械手 ;按適用范圍可分為專(zhuān)用機(jī)械手和通用機(jī)械手兩種 ;按運(yùn)動(dòng)軌跡控制方式可分為點(diǎn)位控制和連續(xù)軌跡控制機(jī)械手等。 機(jī)械手主要由手部和運(yùn)動(dòng)機(jī)構(gòu)組成。下面討論起控制系統(tǒng)的設(shè)計(jì)過(guò)程。 通過(guò)設(shè)計(jì) ,實(shí)現(xiàn) 機(jī)械手自動(dòng)停止下降 , 機(jī)械手的初始位置停在原點(diǎn),按下啟動(dòng)按扭后,機(jī)械手將依次完成上升 — 左旋轉(zhuǎn) 下降 抓物 上升 右旋轉(zhuǎn) 下降 放松,完成了一個(gè)周期。自由度是機(jī)械手設(shè)計(jì)的關(guān)鍵參數(shù)。當(dāng)旋鈕打向回原點(diǎn)時(shí),系統(tǒng)自動(dòng)地回到左上角位置待命,如圖( )是一臺(tái)工件傳送機(jī)械手的結(jié)構(gòu)示意圖。同樣左旋轉(zhuǎn)、右旋轉(zhuǎn)動(dòng)作也是有對(duì)應(yīng)的電磁閥控制。 手動(dòng)操作:就是用按鈕操作,對(duì)機(jī)械手的每一種運(yùn)動(dòng)單獨(dú)進(jìn)行控制。 連續(xù)操作:機(jī)械手從原點(diǎn)開(kāi)始,按一下啟動(dòng)按鈕,機(jī)械手將自動(dòng)地、連續(xù)地周期性循環(huán)?!安竭M(jìn)操作”時(shí),每按一次起動(dòng)按鈕,向前執(zhí)行一個(gè)動(dòng)作;“單周期操作”時(shí),機(jī)械手在原位,按下啟動(dòng)按鈕,自動(dòng)的執(zhí)行一個(gè)操作周期的操作,操作完成后停在原位(如果在 操作過(guò)程中按下停止按鈕,機(jī)械手停在該工序上,再按下啟動(dòng)按鈕,則又從該工序繼續(xù)工作,最后停在原位);“連續(xù)操作”時(shí),機(jī)械手在原位,按下啟動(dòng)按鈕,機(jī)械手就連續(xù)重復(fù)進(jìn)行工作(如果按下停止按鈕,機(jī)械手運(yùn)行到原位后停止),故機(jī)械手操作面板分布情況。 ( 2)輸出共有 8 個(gè)開(kāi)關(guān)量控制信號(hào);傳送帶 A,傳輸帶 B 運(yùn)行控制接觸器線(xiàn)圈。 26K 字節(jié)程序和數(shù)據(jù)存儲(chǔ)空間。 26K 字節(jié)程序和數(shù)據(jù)存儲(chǔ)空間。C 時(shí),所有的輸出 (垂直安裝 ) 55176。在執(zhí)行“連續(xù)操作”程序時(shí),轉(zhuǎn)換啟動(dòng)繼電器 M575一直保持停機(jī)按鈕按下為止。 PLC在啟動(dòng)時(shí)用初始化脈沖 M71使 M574自保持,以次禁止?fàn)顟B(tài)轉(zhuǎn)換。 在單周期工作方式和連續(xù)操作方式下,可執(zhí)行自動(dòng)操作程序。 3)上升 : 當(dāng) T45延時(shí) 1S到, T45與 M102的觸點(diǎn)接通,產(chǎn)生移位信號(hào), M103為“ 1”,M100~ M102均為“ 0”, M103觸點(diǎn)接通 ,機(jī)械手把夾緊的工件提升。同時(shí)T45開(kāi)始計(jì)時(shí)。用狀態(tài)器替代自動(dòng)工作流程圖中的各工步。 2 用 step 軟件在離線(xiàn)情況下輸入機(jī)械手控制梯形圖,然后編輯 。對(duì)于新設(shè)計(jì)的較復(fù)雜的機(jī)械設(shè)備,使用 PLC控制將比使用繼電器控制節(jié)省大量的元器件,減少控制柜內(nèi)部的硬接線(xiàn)和安裝工作量,控制柜或控制箱的體積也相對(duì)較小,在經(jīng)濟(jì)上也往往比繼電器控制還要便宜一些。本次的設(shè)計(jì)是三年來(lái)學(xué)習(xí)過(guò)程中涵蓋面最廣的一次設(shè)計(jì),它不僅體現(xiàn)了我們對(duì)設(shè)計(jì)思想;更重要的是對(duì)我們?nèi)陙?lái)所學(xué)知識(shí)應(yīng)用到了實(shí)踐,使我明白了在今后設(shè)計(jì)過(guò)程中的一般步驟和方法。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。s 21 win. Michel Platini, president of European football39。 The end of our life, and can meet many things really do? 而窮盡我們的一生,又能遇到多少事情是真正地非做不可? During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that 濟(jì)源職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計(jì) 30 those things are optional。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike
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