減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)主要(yao)是用來(lai)(lai)降低轉速(su)(su)(su)和增(zeng)大轉矩(ju)，以滿(man)足工作要(yao)求。減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)的種類(lei)(lei)很多，其分(fen)類(lei)(lei)可按(an)傳(chuan)動(dong)的類(lei)(lei)型和齒(chi)(chi)輪(lun)的外形以及傳(chuan)動(dong)的級數(shu)等來(lai)(lai)分(fen)。按(an)傳(chuan)動(dong)類(lei)(lei)型來(lai)(lai)分(fen)時(shi)，可分(fen)為齒(chi)(chi)輪(lun)減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)，蝸桿減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)和行星(xing)齒(chi)(chi)輪(lun)減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)。按(an)照(zhao)齒(chi)(chi)輪(lun)的外形來(lai)(lai)分(fen)可分(fen)為圓(yuan)(yuan)柱齒(chi)(chi)輪(lun)減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)，圓(yuan)(yuan)錐齒(chi)(chi)輪(lun)減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)和圓(yuan)(yuan)錐—圓(yuan)(yuan)柱齒(chi)(chi)輪(lun)減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)。當按(an)照(zhao)傳(chuan)動(dong)的級數(shu)來(lai)(lai)分(fen)時(shi)，可分(fen)為單級減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)和多級減(jian)(jian)速(su)(su)(su)電(dian)(dian)(dian)(dian)機(ji)。
齒輪(lun)(lun)和蝸(gua)桿組成行(xing)星齒輪(lun)(lun)減(jian)速(su)電(dian)機(ji)，而且(qie)這種(zhong)減(jian)速(su)電(dian)機(ji)都已經有標準(zhun)系列產品(pin)，在(zai)選(xuan)型(xing)時(shi)只有在(zai)找(zhao)不(bu)到合(he)適的產品(pin)時(shi)，才自行(xing)設計制造減(jian)速(su)電(dian)機(ji)。
常見的減(jian)(jian)速電(dian)機(ji)的特點介紹：齒(chi)(chi)輪(lun)減(jian)(jian)速電(dian)機(ji)應用(yong)廣(guang)泛，結構簡(jian)單(dan)，精度容易保(bao)證，而(er)且輪(lun)齒(chi)(chi)可做成直齒(chi)(chi)、斜齒(chi)(chi)和(he)人字齒(chi)(chi)等。蝸桿減(jian)(jian)速電(dian)機(ji)結構緊(jin)湊，傳(chuan)動(dong)比大，工作平(ping)穩，噪(zao)音小(xiao)，但是效(xiao)率比較(jiao)低。蝸桿—齒(chi)(chi)輪(lun)減(jian)(jian)速電(dian)機(ji)有齒(chi)(chi)輪(lun)傳(chuan)動(dong)在(zai)高(gao)速級和(he)蝸桿傳(chuan)動(dong)在(zai)高(gao)速級兩(liang)種形式，前者(zhe)的結構緊(jin)湊，后(hou)者(zhe)的傳(chuan)動(dong)效(xiao)率高(gao)。
行(xing)星齒輪減速電機的行(xing)星齒輪傳(chuan)動(dong)(dong)有效(xiao)利用(yong)了功率(lv)分(fen)流和(he)輸入、輸出的同軸性(xing)以及合(he)理的使(shi)用(yong)了內嚙合(he)，因(yin)而與普通定軸齒輪傳(chuan)動(dong)(dong)相比較，行(xing)星齒輪減速電機具(ju)有質量小、體積小、傳(chuan)動(dong)(dong)比大(da)、承載(zai)能力(li)大(da)以及傳(chuan)動(dong)(dong)平(ping)穩和(he)傳(chuan)動(dong)(dong)效(xiao)率(lv)高等(deng)優點。行(xing)星齒輪減速電機因(yin)具(ju)有這些特點，所以被廣泛(fan)的應用(yong)于冶金、礦山、建筑、航(hang)空等(deng)機械(xie)領域。
