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仿形液壓銑床的plc控制系統(tǒng)設(shè)計(jì)畢業(yè)設(shè)計(jì)-wenkub.com

2025-06-13 00:33 本頁面
   

【正文】 t do other works.When you are reading the book, you hear someone knock on door, you stop to start up of affair, open the door and bine to continue with the one who knock on door a dialogue, the telephone of this time rang, you signal hint to connect a telephone, after connecting the telephone through, return overdo e together knock on door to have a conversation, after dialogue plete, you continue again to see your book, this kind of circumstance we are called the interruption to it, it has the authority, also having sex of have the initiative, the PLC had such function .Its characteristics lie in us and may meet the urgently abrupt affairs in the operation process of the equipments, we want to stop to start immediately up of work, the whereabouts manages the more important affair, this kind of circumstance is we usually meet of, PLC while carry out urgent mission, total will keep the current appearance first, for example the address of the procedure, CPU of tired add the machine data etc., be like to to stick down which the book that we see is when we open the door the page or simply make a mark, because we treat and would still need to continue immediately after book of see the behind. The CPU always does the affair that should do according to our will, but your mistake of give it an affair, it also would be same to do, this we must notice.The interruption is not only a, sometimes existing jointly with the hour several inside break, break off to have the preferred Class, they will carry out the interruption of the higher Class according to person39。t send out and accept at the same time, for example when you make a phone call is to can39。t guarantee the equipments by the control of the single machine, but pass the information exchanges of the equipments and equipments to attain the result that we want. For example fore pack and the examination of the empress work preface, we will arrive wrapping information feedback to examine the place, and examine the information of the place to also want the feedback to packing. Pass the information share thus to make both the chain connect, being a total body, the match of your that thus make is more close, at each other attain to reflect the result that mutually flick.The PLC correspondence has already e more more body now its value, at the PLC and correspondence between PLCs, can pass the munication of the information and the share of the datas to guarantee that of the equipments moderates mutually, the result that arrive already to repair with each other. Data conversion the adoption RS232 between PLC connect to e to the transmission data, but the RS232 pick up a people and can guarantee 10 meters only of deliver the distance, if in the distance of 1000 meters we can pass the RS485 to carry on the correspondence, the longer distance can pass the MODEL only to carry on deliver.The PLC data transmission is just to be called a form to it in a piece of and continuous address that the data of the inner part delivers the other party, we, the PLC of the other party passes to read data in the watch to carry on the operation. If the data that data in the watch is a to establish generally, that is just the general data transmission, for example today of oil price rise, I want to deliver the price of the oil price to lose the oil ally on board, that is the share of the data。 But lead even is a fatal error greatly is what we can39。And the PLC emergence also became the epochmaking topic, adding the vivid software control through a very and stable hardware, making the automation head for the new high tide.The PLC biggest characteristics lie in: The electrical engineering teacher already no longer electric hardware up too many calculationses of cost, as long as order the importation that the button switch or the importation of the sensors order to link the PLC up can solve problem, pass to output to order the conjunction contact machine or control the start equipments of the big power after the electric appliances, but the exportation equipments direct conjunction of the small power can.PLC internal containment have the CPU of the CPU, and take to have an I/ O for expand of exterior to connect a people39。t guarantee the request of the higher quantity and high new the image of the technique business enterprise.The people see in produce practice, automate brought the tremendous convenience and the product quantities for people up of assurance, also eased the personnel39。原本畢業(yè)設(shè)計(jì)模糊的影子,慢慢的在我的頭腦里變得清晰!在此我由衷的感謝李老師的指導(dǎo)??!回顧我大學(xué)的生活,就像我們美麗的校園一樣,在一天天的茁壯成長(zhǎng);我當(dāng)初的選擇是對(duì)的!在這里重要的不僅是我學(xué)到本專業(yè)的很多知識(shí);這里也讓我變得更加堅(jiān)強(qiáng)、獨(dú)立和自信;更重要的是懂得了如何去思考、觀察與發(fā)現(xiàn)以及追求人生! 參考文獻(xiàn)[1]袁任光,可編程序控制器(PC)應(yīng)用技術(shù)與實(shí)例[M],廣州:華南理工大學(xué)出版社,1997[2]廖常初,F(xiàn)X系列PLC編程及應(yīng)用[M],北京:機(jī)械工業(yè)出版社,2005[3]徐健豐,徐麗珍,基于PLC的XA6132型臥式萬能銑床改造[J],機(jī)械工程師,2005,11期[4]劉國(guó)光,陳文勝,PLC在XF716仿形銑床數(shù)控系統(tǒng)中的應(yīng)用[J],新技術(shù)新工藝比如,本次設(shè)計(jì)的核心PLC技術(shù)我們雖然做過深入的學(xué)習(xí),但在實(shí)際中生產(chǎn)中的應(yīng)用卻從來沒有過。但是在進(jìn)行設(shè)計(jì)時(shí)可能考慮得不是很全面,并且設(shè)計(jì)中難免會(huì)存在缺陷,這些設(shè)計(jì)方面的不足將在今后的應(yīng)用中慢慢總結(jié)并進(jìn)行改善。這樣使得機(jī)床的靈活性增強(qiáng),適應(yīng)現(xiàn)在市場(chǎng)多變,產(chǎn)品跟新速度快的現(xiàn)象。設(shè)計(jì)中充分應(yīng)用了PLC編制程序簡(jiǎn)單,控制系統(tǒng)構(gòu)成簡(jiǎn)單、抗干擾能力強(qiáng)、可靠性高并且易于操作及維護(hù),設(shè)計(jì)、施工、調(diào)試周期短的特點(diǎn);使銑床自動(dòng)化程度得到提高。因此,選用FX2N48MR式PLC能滿足控制要求。當(dāng)工作臺(tái)運(yùn)動(dòng)到極限位置時(shí),擋塊碰撞操縱手柄,使其返回中間位置。變壓器將380V交流電變?yōu)?4V的安全電壓,供給照明燈,用轉(zhuǎn)換開關(guān)控制。再將工作臺(tái)的進(jìn)給操縱手柄全部扳到中間位,按下主軸啟動(dòng)按鈕,主軸電動(dòng)機(jī)啟動(dòng),接觸器線圈經(jīng)得電吸合,進(jìn)給電動(dòng)機(jī)正轉(zhuǎn),帶動(dòng)圓工作臺(tái)做旋轉(zhuǎn)運(yùn)動(dòng)。由于在主軸啟動(dòng)接觸器的常開觸點(diǎn)上并聯(lián)了快速進(jìn)給接觸器的一個(gè)常開觸點(diǎn),故在主軸電動(dòng)機(jī)不啟動(dòng)的情況下,也可實(shí)現(xiàn)快速進(jìn)給。工作臺(tái)6個(gè)方向的快速移動(dòng)也是由進(jìn)給電動(dòng)機(jī)拖動(dòng)的。然后,將手柄繼續(xù)向外拉到極限位置,隨即推回原位,變速結(jié)束。 以工作臺(tái)向下(或向前)運(yùn)動(dòng)為例,將垂直與橫向進(jìn)給手柄扳倒向下(或向前)位,手柄通過機(jī)械聯(lián)動(dòng)機(jī)構(gòu)壓下行程開關(guān),常開觸點(diǎn)閉合,常閉觸點(diǎn)斷開,接觸器線圈得電吸合,進(jìn)給電動(dòng)機(jī)正轉(zhuǎn),帶動(dòng)工作臺(tái)做向下(或向前)運(yùn)動(dòng)。當(dāng)縱向進(jìn)給手柄扳向左邊時(shí),行程開關(guān)受壓常開觸點(diǎn)閉合,常閉觸點(diǎn)斷開,接觸器通電吸合,進(jìn)給電動(dòng)機(jī)反轉(zhuǎn),帶動(dòng)工作臺(tái)向左運(yùn)動(dòng)。當(dāng)左邊的離合器吸合時(shí),連接上工作臺(tái)的進(jìn)給傳動(dòng)鏈;當(dāng)右邊的離合器吸合時(shí),連接上快速移動(dòng)傳動(dòng)鏈。工作進(jìn)給只有在主軸啟動(dòng)后才可進(jìn)行,快速進(jìn)給是點(diǎn)動(dòng)控制,即使不啟動(dòng)主軸也可進(jìn)行。同時(shí),常閉觸點(diǎn)斷開,切斷控制回路電源。若瞬時(shí)點(diǎn)動(dòng)一次沒有實(shí)現(xiàn)齒輪良好嚙合,可重復(fù)上述動(dòng)作。為此,本機(jī)床設(shè)置了主軸變速瞬時(shí)電動(dòng)控制線路。與此同時(shí),停止按鈕的常開觸點(diǎn)接通電磁離合器,離合器吸合,將摩擦片壓緊,對(duì)主軸電動(dòng)機(jī)進(jìn)行制動(dòng)。接觸器的輔助常開觸點(diǎn)閉合,接通控制電路的進(jìn)給線路電源,保證了只有先啟動(dòng)主軸電動(dòng)機(jī),才可啟動(dòng)進(jìn)給電動(dòng)機(jī),避免損毀工件或刀具。此時(shí)JOG起作用的前提條件是,
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