VHR425CM-300EG
VHR425CM-300J
銷售熱線: 180-6090-9625/0592-6013512
聯(lián)系人：蘭工
QQ: 869740621
主要產(chǎn)品：日本東方馬達(dá)，泰映TROY減速電機(jī)，韓國SPG小功率馬達(dá)，
韓國DKM減速電機(jī),CPG晟邦減速電機(jī) ...
減速機(jī)技術(shù)資料：
減速機(jī)的一般理解：
最簡當(dāng)?shù)睦斫馐牵瑴p速機(jī)是改變速度與輸出力矩的，提供大力矩，低轉(zhuǎn)速。減速機(jī)的轉(zhuǎn)數(shù)比=輸入轉(zhuǎn)數(shù)/輸出轉(zhuǎn)數(shù)，若轉(zhuǎn)數(shù)比為100，輸出轉(zhuǎn)矩大約為輸入轉(zhuǎn)矩的100倍。（轉(zhuǎn)速減慢而轉(zhuǎn)矩增加）
減速機(jī)也是一種變速機(jī)，不過一般變速機(jī)是用來減速的，習(xí)慣稱減速機(jī)而已；一般的減速機(jī)是固定傳動(dòng)比的，也有可調(diào)的，但一般是分級(jí)調(diào)速。
大家容易想到的是，汽車上都有一個(gè)可調(diào)速的減速機(jī)，所以汽車就有了幾個(gè)檔位，汽油機(jī)(柴油機(jī))就和電機(jī)一樣，加減油門速度可以變化，但變化范圍不大。
當(dāng)然要說的是，離合器和減速機(jī)不是同一個(gè)東西，只不過一般說到減速機(jī)大家就容易想到汽車變速，想到是離合器的功勞，其實(shí)每次變速都是在拉動(dòng)變速桿后才完成的。一般可調(diào)變速機(jī)在換檔時(shí)，是不能負(fù)荷的，所以要通過離合器把減速機(jī)輸出與汽車分離，換好檔后再聯(lián)接，離合器只是一種聯(lián)軸器（只不過是可分可合的）。
能量守恒定律告訴我們，電機(jī)輸出功率不可能無緣無故地變，只可能因?yàn)楦鞣N損耗變成熱能量了。功率不變，速度減小，那就使力量（力矩）變大了；相同輸出功率時(shí)，（角）速度與力（力矩）成反比，一般減速機(jī)也有能量損耗，效率為70%-99%不等。
如果用于低速的場合，只用一個(gè)普通低速的電機(jī)能行嗎？或用伺服電機(jī)呢？
只用一個(gè)普通低速的電機(jī)那當(dāng)然不行，因?yàn)椋?br />
1）速度一般達(dá)不到：一般情況下減速機(jī)的數(shù)比可以低到3:1甚至更小，也可以高于180:1甚至更大。
也就是說，當(dāng)普通電機(jī)轉(zhuǎn)速為1380轉(zhuǎn)/分(4極電機(jī))時(shí)，減速機(jī)輸出轉(zhuǎn)速可以高到460轉(zhuǎn)甚至更大，也可以低到7.6轉(zhuǎn)甚至更小。而普通電機(jī)可以實(shí)現(xiàn)這么大的變速范圍嗎？就算是多極變速電機(jī)，轉(zhuǎn)速最快的2極電機(jī)轉(zhuǎn)速為2880-2970轉(zhuǎn)/分左右，轉(zhuǎn)速最低的12極電機(jī)轉(zhuǎn)速為480-490轉(zhuǎn)/分左右。如果只需要幾十轉(zhuǎn)/分的轉(zhuǎn)速，普通電機(jī)那就更不行了。
2）普通電機(jī)轉(zhuǎn)矩一般達(dá)不到：要求在低速運(yùn)轉(zhuǎn)的負(fù)載，一般說來都要求比較大的轉(zhuǎn)矩(比如說提升機(jī)、電梯、生產(chǎn)線、卷繞機(jī)等等)，即使普通電機(jī)的轉(zhuǎn)速符合要求了，轉(zhuǎn)矩也往往不能剛好符合要求。注意低速時(shí)機(jī)械導(dǎo)軌容易出現(xiàn)“爬行”現(xiàn)象。
用于低速的場合，只用一個(gè)交流伺服電機(jī)能行嗎？那還得分具體的不同情況：
用交流伺服電機(jī)做低速運(yùn)行是沒有問題的（伺服驅(qū)動(dòng)器內(nèi)部有內(nèi)置的電子齒輪，可任意設(shè)置，但建議1/50≤減速比≤50）。但是同樣存在轉(zhuǎn)速符合要求了，轉(zhuǎn)矩未必能剛好符合要求的情況，若轉(zhuǎn)矩也符合了要求了那當(dāng)然是排在位的方案了。
若轉(zhuǎn)矩不符合要求，又可細(xì)分為兩小類不同配置方案：A）大功率交流伺服裝置（交流伺服驅(qū)動(dòng)器+伺服電機(jī)）方案；B）小功率交流伺服裝置+減速機(jī)方案。
A）在位置精度沒有特別要求的情況下，選用大功率的交流伺服裝置方案因其成本較高，和小功率的交流伺服裝置+減速機(jī)方案，相比較而言，性價(jià)比優(yōu)勢(shì)不明顯。
B）但若是有較高的位置精度要求的，雖然采用大功率的交流伺服裝置方案成本高些，但位置精度要求得到了保障；而小功率的交流伺服裝置+減速機(jī)方案，因減速機(jī)存在機(jī)械齒輪背隙，位置精度是要做出一些犧牲的。最終方案要根據(jù)具體的設(shè)備、設(shè)計(jì)目標(biāo)、技術(shù)指標(biāo)、精度要求等因素來確定。
C）另外還得兼顧電機(jī)的轉(zhuǎn)矩轉(zhuǎn)子慣量。
伺服電機(jī)和減速機(jī)是怎樣選配的？比如選擇中慣量750W的電機(jī)，選擇一種減速比在60左右的減速機(jī)，應(yīng)該怎樣選?
選型時(shí)應(yīng)注意：
1）確認(rèn)你的負(fù)載額定扭矩要小于 > 減速機(jī)額定輸出扭矩。
2）伺服電機(jī)額定扭矩（乘以）x減速比要大于 > 負(fù)載額定扭矩。
3）負(fù)載通過減速機(jī)轉(zhuǎn)化到伺服電機(jī)的轉(zhuǎn)動(dòng)慣量，要在伺服電機(jī)允許的范圍內(nèi)。
4）確認(rèn)減速機(jī)精度能夠滿足您的控制要求。
5）減速機(jī)結(jié)構(gòu)形式，外型尺寸既能滿足設(shè)備要求，同時(shí)能與所選用的伺服電機(jī)連接。
除了減速機(jī)傳動(dòng)比，輸出轉(zhuǎn)矩，輸出軸的軸向力，徑向力校核；還要看減速機(jī)的傳動(dòng)精度，根據(jù)工作條件選擇。因?yàn)閭鲃?dòng)精度高價(jià)格高，只要電機(jī)和減速機(jī)配套后滿足你的要求（功能和性能），就可以了。
技術(shù)指標(biāo)要符合要求，材料成本價(jià)格適中，就是好的方案。
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