OVATION系統(tǒng)DCS卡件 Westinghouse 1C31107G02 MODULE 125V
OVATION系統(tǒng)DCS卡件 Westinghouse 1C31107G02 MODULE 125V
OVATION系統(tǒng)DCS卡件 Westinghouse 1C31107G02 MODULE 125V
閃光對(duì)焊作為一種*的焊接技術(shù),具有無(wú)需添加焊接材料、生產(chǎn)率高、成本低、易于操作等優(yōu)點(diǎn)。隨著工業(yè)技術(shù)的不斷發(fā)展,焊接的零件截面越來(lái)越大,遇到了一些技術(shù)問(wèn)題,如焊接加熱難、生產(chǎn)率低、產(chǎn)品合格率低等。為了解決閃光對(duì)焊中存在的這些問(wèn)題,許多焊接工作者對(duì)閃光對(duì)焊工藝過(guò)程進(jìn)行了一系列的研究,創(chuàng)建了高效率、低能耗的閃光對(duì)焊方法,如脈沖閃光對(duì)焊法、程序降低電壓閃光對(duì)焊法??刂崎W光對(duì)焊工藝過(guò)程,使之在保證焊接質(zhì)量的前提下盡可能提高生產(chǎn)率,是我們一直以來(lái)追求的目標(biāo)。考慮到影響閃光對(duì)焊焊接質(zhì)量的因素,本文利用PLC系統(tǒng)來(lái)控制閃光對(duì)焊工藝過(guò)程,實(shí)現(xiàn)了對(duì)焊接質(zhì)量控制的目的,從而提高了閃光對(duì)焊的生產(chǎn)率。
1 機(jī)械機(jī)構(gòu)及過(guò)程分析
1.1 閃光對(duì)焊的機(jī)械裝置及動(dòng)作過(guò)程
圖1 閃光對(duì)焊的機(jī)械裝置
如圖1所示為閃光對(duì)焊的機(jī)械裝置,其動(dòng)作過(guò)程分析如下:
1.1.1 預(yù)調(diào)
閃光對(duì)焊焊接工藝前期準(zhǔn)備工作,即機(jī)械機(jī)構(gòu)的調(diào)整、焊接參數(shù)的選取等。閃光對(duì)焊的主要規(guī)范參數(shù)有:調(diào)伸長(zhǎng)度、閃光速度、閃光電流密度、頂鍛速度、頂鍛壓力、夾緊力等。
調(diào)試完成后,將工件裝卡到工作臺(tái)上。
1.1.2 夾緊與定位
按下啟動(dòng)按鈕,電磁閥PQ1、PQ2、PQ3線圈帶電,壓縮氣體經(jīng)過(guò)三大件流入夾緊氣缸1、2上氣室,壓縮氣體推動(dòng)活塞桿向下運(yùn)動(dòng)壓緊工件1、2,直到壓緊開關(guān)閉合為止。
同時(shí)從氣泵流出的氣體經(jīng)三大件進(jìn)入定位氣缸3的上氣室,推動(dòng)定位桿向上運(yùn)動(dòng),為工件對(duì)準(zhǔn)準(zhǔn)確定位。定位結(jié)束,電圖1閃光對(duì)焊的機(jī)械裝置磁閥PQ3線圈去電,定位桿彈回。
1.1.3 焊接
接通焊接開關(guān),保持電磁閥PQ1、PQ2和PQ4線圈帶電,電磁閥PQ5線圈不帶電,壓力氣體經(jīng)低壓三大件,進(jìn)入推進(jìn)氣缸4右氣室,推動(dòng)活塞桿、動(dòng)夾具帶動(dòng)工件2向工件1運(yùn)動(dòng),直到工件1、2接觸,達(dá)到預(yù)先設(shè)定的位置,推進(jìn)開關(guān)閉合。工件1、2接觸的瞬間,即開始通電加熱。當(dāng)閃光加熱達(dá)到預(yù)定溫度時(shí),電磁閥PQ5線圈帶電,壓縮氣體經(jīng)過(guò)高壓三大件推動(dòng)推進(jìn)氣缸、動(dòng)夾具以很大的壓力進(jìn)行快速頂鍛。隨即切斷焊接電流,并保持一段時(shí)間,使接頭冷卻、凝固。焊接時(shí)間到,斷開焊接開關(guān),焊接過(guò)程結(jié)束。
1.1.4 復(fù)位
電磁閥PQ4、PQ5線圈去電,推進(jìn)氣缸氣路換向,低壓氣體進(jìn)入推進(jìn)氣缸4左氣室推動(dòng)推進(jìn)氣缸帶動(dòng)工作臺(tái)向右運(yùn)動(dòng),推進(jìn)氣缸4復(fù)位。電磁閥PQ1、PQ2線圈去電,氣路換向,壓緊觸頭彈回,氣缸1、2復(fù)位。此時(shí),一次閃光對(duì)焊焊接過(guò)程已完成,所有裝置原位等待,準(zhǔn)備進(jìn)入下一焊接循環(huán)。
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