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畢業(yè)設(shè)計(jì)-基于西門子plc全制動(dòng)剪切機(jī)畢業(yè)設(shè)計(jì)(參考版)

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【正文】 t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). cause there 。ll be traveling fast, so despite the distance, it will not be like diving 33 into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。突然想到那件藍(lán)格子襯衫;那些被折成各種各樣形狀的信紙;那段從街角深巷伊始的友誼;還有那場還沒有開始就宣告了終結(jié)的邂逅計(jì)劃 …… 那些年那些天的非做不可,終于和青春一樣,都將在我們的人生中謝幕。 Have declared the end of the encounter that haven39。 Those were broken into various shapes of stationery。那些曾經(jīng)所謂的非做不可,只是青蔥年華里自己給自己注射的一支強(qiáng)心劑,或者說,是自以為是的精神寄托罷了。也曾經(jīng)好像已經(jīng)下定了決心去做某件事,但更多的時(shí)候是最后又打起了退堂鼓。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 his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個(gè)人的時(shí)候,自己的想法總是特別地清晰。 Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來,這個(gè)世界上, 對(duì)某個(gè)事件能產(chǎn)生化學(xué)反應(yīng)的,除了非做不可的堅(jiān)決,還有,時(shí)間。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat 32 profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。t really grow up, it seems is not so important。 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 those things are optional??傆X得自己自己似乎應(yīng)該去做點(diǎn)什么,或者寫點(diǎn)什么。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開頭的年齡已經(jīng)到了尾聲。s actions. CSKA said they were surprised and disappointed by Toure39。s 21 win. Michel Platini, president of European football39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport. For me it39。s antiracism taskforce, is in London for the Football Association39。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。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??梢哉f這次的設(shè)計(jì)讓我受益匪淺。經(jīng)過短短的幾周時(shí)間,我所設(shè)計(jì)的剪切 機(jī)我認(rèn)為是不能完全達(dá)到標(biāo)準(zhǔn)的,但是至少 是比較完善的設(shè)計(jì),從手自動(dòng)選擇開始,然后循環(huán)模式選擇,再添加了機(jī)器報(bào)警和過載保護(hù)來有效的防治機(jī)器在運(yùn)作時(shí)的故障損傷。在控制的 過 程中,剪板機(jī)剪板的 個(gè)數(shù) 可根據(jù) 工藝參數(shù) 方便的修改 ,而且利用光 電 接近 開關(guān)檢測(cè) 板料 狀態(tài) 非常準(zhǔn)確。 它較 好地解 決 了采用 繼電 器 接觸器控制,控 制系 統(tǒng)較復(fù) 雜 ,大量的接 線 使系 統(tǒng) 可靠性降低 ,也 間 接地降低了 設(shè)備 的工作效率 這 一 問題 。 系 統(tǒng) 的流程 圖 控制系 統(tǒng) 的流程 順 序如 圖 43所示: 23 圖 43 控制系 統(tǒng) 的流程 圖 統(tǒng) 的梯形 圖 (采用 s7200編程) 1 系 統(tǒng) 的梯形 圖 24 25 26 27 28 圖 41 系 統(tǒng) 的梯形 圖 29 圖 42 程序仿真 圖 4 結(jié) 束 語 自 動(dòng) 剪板機(jī)是一種精確控制板材加工尺寸 ,將大塊 金 屬 板材 進(jìn) 行自 動(dòng) 循 環(huán) 剪切加工 ,并由送料 車運(yùn) 送到下一工序的自 動(dòng) 化加 工設(shè)備 ,其整 個(gè)工藝過 程很符合 順序控制的要求,所以,在控 制過 程中,采用可 編 程控制器 對(duì) 自 動(dòng) 剪板機(jī) 進(jìn) 行控制。利用 PLC 移位寄存器的移位功能,可 實(shí)現(xiàn) 步 進(jìn)順 序控制,使每一步 嚴(yán)格 按 順 序 動(dòng) 作。 SB1173。KM6KM7HLAC 220V送料電機(jī)壓塊上移壓塊下移剪切刀上移剪切刀下移小車左行小車右行小車空載指示燈DC 24V 圖 42 自 動(dòng) 剪板機(jī) PLC控制系 統(tǒng) I/O端子分配 圖 把 現(xiàn)場開關(guān)輸入設(shè)備按編號(hào) 接在 PLC 的 輸 入端子上,相 應(yīng) 的 輸 出 設(shè)備 接 在輸 出端子上 (SB1,SB2 是按鈕,其他是開關(guān) )( 輸入輸出端應(yīng)是 M 與 L 而非 ) 。 SB1SB2SQ1SQ2SQ3SQ4SQ5SQ6SQ7COMCOM 停止啟動(dòng)板料到位壓塊上限壓塊下限剪切到狀態(tài)小車到位小車狀態(tài)板料計(jì)數(shù)卸貨按鈕PLC KM3KM4KM439。 HL1為 小 車空載 指示 ,根據(jù)需要 , 還 可增 設(shè) 其它信 號(hào)指 示。本 設(shè)計(jì) 中假 設(shè) 小 車 可最多 載 40塊 板料。 I/O 端子分配 1 輸入設(shè)備 限位 開關(guān) : SQ1, SQ2, SQ3,SQ4,SQ5, SQ6, SQ7 系 統(tǒng) 的停止 啟動(dòng) 按 鈕 : SB1173。 ProTool/Pro用于組態(tài)標(biāo)準(zhǔn) PC和所有西門子 HMI產(chǎn)品, ProTool/Pro不只是組態(tài)軟件,其運(yùn)行版也用于 Windows平臺(tái)的監(jiān)控系統(tǒng)。 ProTool適用于大部分 HMI硬件的組態(tài),從操作員面板到標(biāo)準(zhǔn) PC都可以用集成在 STEP 7中的 ProTool有效地完成組態(tài)。 ( 3)人機(jī)界面軟件 人機(jī)界面軟件為用戶自動(dòng)化項(xiàng)目提供人機(jī)界面( HMI)或SCADA系統(tǒng),支持大范圍的平臺(tái)。另一種是插槽 PLC(在用戶計(jì)算機(jī)上安裝一個(gè) PC卡),它具有硬件 PLC的全部功能。 20 ( 2)基于 PC的控制軟件 基于 PC的控制系統(tǒng) WinAC允許使用個(gè)人計(jì)算機(jī)作為可編程序控制器( PLC)運(yùn)行用戶的程序,運(yùn)行在安裝了 Windows 的 SIMATIC工控機(jī)或其它任何商用機(jī)。 6. SIMATIC S7工業(yè)軟件 西門子的工業(yè)軟件分為三個(gè)不同的種類: ( 1)編程和工程工具 編程和工程工具包括所有基于 PLC或 PC用于編程、組態(tài)、模擬和維護(hù)等控制所需的工具。個(gè)人計(jì)算機(jī)( PC)也可以作為 HMI硬件使用。 4. 工業(yè)通訊網(wǎng)絡(luò) 通訊網(wǎng)絡(luò)是自動(dòng)化系統(tǒng)的支柱,西門子的全集成自動(dòng)化網(wǎng)絡(luò)平臺(tái)提供了從控制級(jí)一直到現(xiàn)場級(jí)的一致性通訊, “SIMATIC NET” 是全部網(wǎng)絡(luò)系列產(chǎn)品的總稱,他們能在工廠的不同部門,在不同 的自動(dòng)化站以及通過不同的級(jí)交換數(shù)據(jù),有標(biāo)準(zhǔn)的接口并且相互之間完全兼容。 S7400 PLC采用模塊化無風(fēng)扇的設(shè)計(jì),可靠耐用,同時(shí)可以選用多種級(jí)別(功能逐步升級(jí))的 CPU,并配有多種通用功能的模板,這使用戶能根據(jù)需要組合成不同的專用系統(tǒng)。S7300 PLC具有多種不同的通信接口,并通過多種通信處理器來連接 ASI總線接口和工業(yè)以太網(wǎng)總線系統(tǒng);串行通信處理器用來連接點(diǎn)到點(diǎn)的通信系統(tǒng);多點(diǎn)接口( MPI)集成在 CPU中,用于同時(shí)連接編程器、 PC機(jī)、人機(jī)界面系統(tǒng)及其他 SIMATIC S7/M7/C7等自動(dòng)化控制系統(tǒng)。 S7300操作系統(tǒng)自動(dòng)地處理數(shù)據(jù)的傳送;CPU的智能化的診斷系統(tǒng)連續(xù)監(jiān)控系統(tǒng)的功能是否正常、記錄錯(cuò)誤和特殊系統(tǒng)事件(例如:超時(shí),模塊更換,
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