140CRA21210 Quantum

140CRA21210

連接電機(jī)軸需要抗扭剛性聯(lián)軸器或加固型的皮帶，頻繁的加減速可導(dǎo)致聯(lián)軸器或皮帶變松或滑動(dòng)。

故障現(xiàn)象及原因：在安裝過程中，如果軸受到劇烈沖擊，會(huì)對(duì)電機(jī)軸承和/或編碼器造成致命的損壞。

對(duì)策：安裝或拆卸過程中，嚴(yán)禁使用工具敲擊軸、聯(lián)軸器或滑輪。

伺服電動(dòng)機(jī)的其他問題處理技巧?

1. 電動(dòng)機(jī)竄動(dòng)：在進(jìn)給時(shí)出現(xiàn)竄動(dòng)現(xiàn)象，測(cè)速信號(hào)不穩(wěn)定，如編碼器有裂紋；接線端子接觸不良，如螺釘松動(dòng)等；一般是由于進(jìn)給傳動(dòng)鏈的反向問隙或伺服驅(qū)動(dòng)增益過大所致；??

2. 電動(dòng)機(jī)爬行：一般發(fā)生在起動(dòng)加速段或低速進(jìn)給時(shí)，是由于進(jìn)給傳動(dòng)鏈的潤(rùn)滑狀態(tài)不良，伺服系統(tǒng)增益低及外加負(fù)載過大等因素所致。要注意的是，伺服電動(dòng)機(jī)和滾珠絲杠聯(lián)接用的聯(lián)軸器，由于連接松動(dòng)或聯(lián)軸器本身的缺陷，如裂紋等，造成滾珠絲杠與伺服電動(dòng)機(jī)的轉(zhuǎn)動(dòng)不同步，從而使進(jìn)給運(yùn)動(dòng)忽快忽慢；???

3. 電動(dòng)機(jī)振動(dòng)：機(jī)床高速運(yùn)行時(shí)，可能產(chǎn)生振動(dòng)，會(huì)產(chǎn)生過流報(bào)警。機(jī)床振動(dòng)問題一般屬于速度問題，所以應(yīng)尋找速度環(huán)問題；???

4. 電動(dòng)機(jī)轉(zhuǎn)矩降低：伺服電動(dòng)機(jī)從額定堵轉(zhuǎn)轉(zhuǎn)矩到高速運(yùn)轉(zhuǎn)時(shí)，發(fā)現(xiàn)轉(zhuǎn)矩會(huì)突然降低，是由電動(dòng)機(jī)繞組的散熱損壞和機(jī)械部分發(fā)熱引起的。高速時(shí)，電動(dòng)機(jī)溫升變大，因此，正確使用伺服電動(dòng)機(jī)前要對(duì)電動(dòng)機(jī)的負(fù)載進(jìn)行驗(yàn)算；???

5. 電動(dòng)機(jī)位置誤差：當(dāng)伺服軸運(yùn)動(dòng)超過位置允差范圍時(shí)，伺服驅(qū)動(dòng)器就會(huì)出現(xiàn)“4”號(hào)位置超差報(bào)警。主要原因有：系統(tǒng)設(shè)定的允差范圍??；伺服系統(tǒng)增益設(shè)置不當(dāng)；位置檢測(cè)裝置有污染；進(jìn)給傳動(dòng)鏈累計(jì)誤差過大等；?

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