Novellus 16-131278-00

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描述

Novellus 16-131278-00

PLC控制系統(tǒng)構(gòu)成
控制系統(tǒng)由可編程邏輯控制器FBs-44MN、伺服、光電接近開關(guān)和D/A擴(kuò)展模塊以及觸摸屏元件組成,實(shí)現(xiàn)磨削過程中基本邏輯動(dòng)作、檢測、伺服閉環(huán)控制和人機(jī)通訊四大功能
伺服和定位控制器的結(jié)合模塊:磨削機(jī)要求絲杠上的刀盤在加工前后必須停拖板電機(jī)在相同的位置,以便下一加工循環(huán),否則將造成刀具或工件損壞。準(zhǔn)確定位在普通繼電器控制的鼠籠式交流電機(jī)上實(shí)現(xiàn)起來比較麻煩,我們采取伺服系統(tǒng)來實(shí)現(xiàn)定位,引人速度負(fù)反饋消除了外界參數(shù)變化和擾動(dòng)對系統(tǒng)狀態(tài)的影響,使該系統(tǒng)具有動(dòng)態(tài)響應(yīng)快、定位精度高、系統(tǒng)穩(wěn)定性好等特點(diǎn)。為了在工作過程中使精度控制在規(guī)定的誤差以內(nèi),進(jìn)刀距離通過檢測采用閉環(huán)跟蹤控制。首先是用FBs-44MN讀取檢測時(shí)探頭接觸版輥的讀數(shù),并根據(jù)公式顯示版輥的直徑最大,最小,平均值(與制定合適的切削量有關(guān)),然后用此時(shí)的伺服讀數(shù)減去探頭讀數(shù),再加上需要的切削量求出比較精確的進(jìn)刀量,最后開始整個(gè)自動(dòng)磨削過程。FBs-44MN作為智能化的定位控制器按用戶編制的定位程序向驅(qū)動(dòng)器發(fā)出定位脈沖、運(yùn)行方向等,信號驅(qū)動(dòng)器按這些控制信號驅(qū)動(dòng)伺服電機(jī)帶動(dòng)滾珠絲杠進(jìn)行定位,對于伺服電機(jī),有伺服準(zhǔn)備、伺服結(jié)束和零位三個(gè)信號反饋,外部設(shè)定用數(shù)字開關(guān)可將定位點(diǎn)位置和速度等數(shù)值送人定位單元,定位單元通過總線連接到FX系列PLC擴(kuò)展口上,成為PLC控制系統(tǒng)中的定位智能控制環(huán)節(jié),在定位單元內(nèi),常量的設(shè)置與監(jiān)控、參數(shù)的改變可以通過使用連接到PLC上的數(shù)據(jù)存取單元完成,因此可以在運(yùn)行過程中由PLC指定模塊號(這里4DA是1號模塊),傳送定位速度等數(shù)據(jù),并能在PLC中監(jiān)視GM的實(shí)時(shí)定位信號及運(yùn)行或停止?fàn)顟B(tài)。相應(yīng)地在PLC中分配有輸人繼電器,輸出繼電器,輔助繼電器,以及特殊輔助繼電器等設(shè)備。
進(jìn)刀量用伺服電機(jī)來控制,伺服電機(jī)的控制由PLC實(shí)現(xiàn)。PLC產(chǎn)生兩路信號,一路為伺服脈沖信號,它的頻率和伺服電機(jī)的轉(zhuǎn)速成正比,它的個(gè)數(shù)決定了伺服電機(jī)旋轉(zhuǎn)的角度。另一路為方向電平信號DIR。
當(dāng)DIR為高電平時(shí),電機(jī)順時(shí)針旋轉(zhuǎn);相反,當(dāng)DIR為低電平時(shí),電機(jī)為逆時(shí)針旋轉(zhuǎn)。磨削中分為粗切和精切,精切的精度要求很高,一般切削量不能大于0.05mm,伺服前進(jìn)lmm,就發(fā)了1600個(gè)脈沖,相當(dāng)于一個(gè)脈沖就前進(jìn)了0.625um,精度非常高,從而使得絲杠得到精確定位。伺服控制刀盤進(jìn)刀時(shí),進(jìn)刀速度不是不變的,當(dāng)?shù)侗P接近版輥的時(shí)候要自動(dòng)開始減速,以免過沖影響磨削質(zhì)量??刂频侗P進(jìn)刀的絲杠上有三個(gè)接近開關(guān),一個(gè)是用來原點(diǎn)定位的,另外兩個(gè)分別是進(jìn)、退接近開關(guān)。

產(chǎn)品承諾:
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢價(jià)格,大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA
? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家

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15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家


選擇深圳長欣,選擇放心,售后無憂大量現(xiàn)貨,當(dāng)天順豐發(fā)貨!
主營:本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂,ACSO,力士樂等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊”(不管能不能看懂,先了解個(gè)大概,以便學(xué)習(xí)編程時(shí)查找);
2、由位控邏輯入手,逐漸增加定時(shí)、計(jì)數(shù)等條件,把或、與、非關(guān)系理順;
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換;
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解(最好是有個(gè)物理回路驗(yàn)證,比如變頻器+電機(jī)+測速傳感器);
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制(盡量避免跳轉(zhuǎn),非跳不可時(shí)也是跳的越近越好);
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列,GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌,由于PLC的基本框架大同小異,學(xué)會(huì)一種至于其它的學(xué)習(xí)起來也就簡單了。