行星減速機是(shi)一(yi)種(zhong)應用非常廣泛的減(jian)速傳動設備，按照傳動精(jing)度(du)(du)分為精(jing)密行(xing)星(xing)(xing)減(jian)速機(ji)、普通行(xing)星(xing)(xing)減(jian)速機(ji)，兩者之(zhi)(zhi)間(jian)在(zai)傳動精(jing)度(du)(du)上市由差別的；在(zai)了解(jie)兩種(zhong)行(xing)星(xing)(xing)減(jian)速機(ji)之(zhi)(zhi)間(jian)的區(qu)別，先(xian)了解(jie)行(xing)星(xing)(xing)減(jian)速機(ji)傳動精(jing)度(du)(du)和級數(shu)概念(nian)；

什么是行(xing)星減(jian)速機傳動(dong)精度？行(xing)星減(jian)速機傳動(dong)精度也稱(cheng)為(wei)回(hui)(hui)(hui)程(cheng)間(jian)隙(xi)，將輸出端(duan)固(gu)定(ding)，輸入端(duan)順時針(zhen)和逆時針(zhen)方向旋轉，使輸出端(duan)產(chan)生(sheng)額定(ding)扭(niu)矩+-2%扭(niu)矩時，減(jian)速機輸入端(duan)有一個(ge)微(wei)小(xiao)的角(jiao)位移，此(ci)角(jiao)位移即為(wei)回(hui)(hui)(hui)程(cheng)間(jian)隙(xi)。單位是“弧分”，即一度的六(liu)十分之一。通常的回(hui)(hui)(hui)程(cheng)間(jian)隙(xi)值均指(zhi)減(jian)速機的輸出端(duan)。

什么是(shi)行(xing)星減速(su)(su)機(ji)級(ji)(ji)數？行(xing)星減速(su)(su)機(ji)級(ji)(ji)數通常分(fen)為(wei)三種等級(ji)(ji)：一(yi)級(ji)(ji)減速(su)(su)（一(yi)般為(wei)小于(yu)(yu)10：1）、二級(ji)(ji)減速(su)(su)（一(yi)般為(wei)大(da)于(yu)(yu)10：1而小于(yu)(yu)等于(yu)(yu)200：1）、三級(ji)(ji)減速(su)(su)（有的品(pin)牌(pai)沒有第三級(ji)(ji)，最大(da)減速(su)(su)比(bi)做到(dao)100：1，一(yi)般劃分(fen)原則就是(shi)大(da)于(yu)(yu)100：1），但微型行(xing)星減速(su)(su)器(qi)可(ke)做到(dao)五級(ji)(ji)，減速(su)(su)比(bi)最大(da)做到(dao)4592：1；

精(jing)(jing)密(mi)行星(xing)(xing)減速機(ji)(ji)是(shi)相比(bi)較(jiao)于普通行星(xing)(xing)減速機(ji)(ji)的傳(chuan)動精(jing)(jing)度要(yao)高(gao)(gao)(gao)(gao)，傳(chuan)動效率高(gao)(gao)(gao)(gao)等(deng)(deng)(deng)特點；精(jing)(jing)密(mi)行星(xing)(xing)減速機(ji)(ji)的主要(yao)傳(chuan)動結(jie)構(gou)為：行星(xing)(xing)輪，太陽(yang)輪，內齒(chi)圈等(deng)(deng)(deng)傳(chuan)動結(jie)構(gou)組裝(zhuang)而(er)成。相對(dui)于其它(ta)普通行星(xing)(xing)減速機(ji)(ji)，精(jing)(jing)密(mi)行星(xing)(xing)減速機(ji)(ji)具有(you)高(gao)(gao)(gao)(gao)剛性、高(gao)(gao)(gao)(gao)精(jing)(jing)度（單級可做到1分以內）、高(gao)(gao)(gao)(gao)傳(chuan)動效率(單級在97%-98%)、高(gao)(gao)(gao)(gao)的扭(niu)矩/體積比(bi)、終身免維護等(deng)(deng)(deng)特點。可安(an)裝(zhuang)在直(zhi)流有(you)刷電機(ji)(ji)、直(zhi)流無刷電機(ji)(ji)、步進電機(ji)(ji)、空心杯電機(ji)(ji)中，用(yong)來降低轉速，提升(sheng)扭(niu)矩，匹配慣量。

普通(tong)行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)是(shi)一(yi)(yi)種用(yong)途廣泛(fan)的(de)(de)工(gong)業產(chan)品，可(ke)(ke)以降低電(dian)機(ji)的(de)(de)轉(zhuan)速(su)(su)，同時(shi)增(zeng)大輸出(chu)(chu)轉(zhuan)矩。行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)是(shi)一(yi)(yi)種工(gong)業產(chan)品，行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)是(shi)一(yi)(yi)種傳達機(ji)構(gou)，其結(jie)構(gou)由一(yi)(yi)個(ge)(ge)(ge)內(nei)(nei)齒(chi)(chi)(chi)(chi)環(huan)(huan)(huan)(huan)緊(jin)(jin)密(mi)結(jie)合于(yu)齒(chi)(chi)(chi)(chi)箱殼(ke)(ke)體上(shang)(shang)，環(huan)(huan)(huan)(huan)齒(chi)(chi)(chi)(chi)中(zhong)心(xin)有(you)一(yi)(yi)個(ge)(ge)(ge)自(zi)外(wai)部(bu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)所驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)之(zhi)(zhi)太(tai)(tai)陽齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)，介于(yu)兩(liang)者之(zhi)(zhi)間有(you)一(yi)(yi)組(zu)由三顆齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)等(deng)分組(zu)合于(yu)托盤上(shang)(shang)之(zhi)(zhi)行(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)組(zu)，該組(zu)行(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)依(yi)靠著出(chu)(chu)力(li)(li)軸、內(nei)(nei)齒(chi)(chi)(chi)(chi)環(huan)(huan)(huan)(huan)及太(tai)(tai)陽齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)支撐(cheng)浮(fu)游于(yu)期間；當(dang)(dang)入力(li)(li)側動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)太(tai)(tai)陽齒(chi)(chi)(chi)(chi)時(shi)，可(ke)(ke)帶動(dong)(dong)(dong)(dong)(dong)(dong)(dong)行(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)自(zi)轉(zhuan)，并(bing)依(yi)循著內(nei)(nei)齒(chi)(chi)(chi)(chi)環(huan)(huan)(huan)(huan)之(zhi)(zhi)軌跡(ji)(ji)沿(yan)著中(zhong)心(xin)公轉(zhuan)，行(xing)星(xing)(xing)(xing)(xing)之(zhi)(zhi)旋轉(zhuan)帶動(dong)(dong)(dong)(dong)(dong)(dong)(dong)連結(jie)于(yu)托盤之(zhi)(zhi)出(chu)(chu)力(li)(li)軸輸出(chu)(chu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)。利用(yong)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)的(de)(de)速(su)(su)度(du)轉(zhuan)換器，將電(dian)機(ji)（馬達）的(de)(de)回(hui)轉(zhuan)數減(jian)(jian)(jian)速(su)(su)到所要(yao)的(de)(de)回(hui)轉(zhuan)數，并(bing)得到較(jiao)大轉(zhuan)矩的(de)(de)機(ji)構(gou)。由一(yi)(yi)個(ge)(ge)(ge)內(nei)(nei)齒(chi)(chi)(chi)(chi)環(huan)(huan)(huan)(huan)(A)緊(jin)(jin)密(mi)結(jie)合于(yu)齒(chi)(chi)(chi)(chi)箱殼(ke)(ke)體上(shang)(shang)，環(huan)(huan)(huan)(huan)齒(chi)(chi)(chi)(chi)中(zhong)心(xin)有(you)一(yi)(yi)個(ge)(ge)(ge)自(zi)外(wai)部(bu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)所驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)之(zhi)(zhi)太(tai)(tai)陽齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(B)，介于(yu)兩(liang)者之(zhi)(zhi)間有(you)一(yi)(yi)組(zu)由三顆齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)等(deng)分組(zu)合于(yu)托盤上(shang)(shang)之(zhi)(zhi)行(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)組(zu)(C)該組(zu)行(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)依(yi)靠著出(chu)(chu)力(li)(li)軸、內(nei)(nei)齒(chi)(chi)(chi)(chi)環(huan)(huan)(huan)(huan)及太(tai)(tai)陽齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)支撐(cheng)浮(fu)游于(yu)期間；行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)當(dang)(dang)入力(li)(li)側動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)太(tai)(tai)陽齒(chi)(chi)(chi)(chi)時(shi)，可(ke)(ke)帶動(dong)(dong)(dong)(dong)(dong)(dong)(dong)行(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)自(zi)轉(zhuan)，并(bing)依(yi)循著內(nei)(nei)齒(chi)(chi)(chi)(chi)環(huan)(huan)(huan)(huan)之(zhi)(zhi)軌跡(ji)(ji)沿(yan)著中(zhong)心(xin)公轉(zhuan)，游星(xing)(xing)(xing)(xing)之(zhi)(zhi)旋轉(zhuan)帶動(dong)(dong)(dong)(dong)(dong)(dong)(dong)連結(jie)于(yu)托盤之(zhi)(zhi)出(chu)(chu)力(li)(li)軸輸出(chu)(chu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)。行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)具(ju)備重量輕、體積(ji)小、傳動(dong)(dong)(dong)(dong)(dong)(dong)(dong)比范圍大、效率(lv)高、運轉(zhuan)平(ping)穩、噪聲低適應性強(qiang)等(deng)特點，行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)相比較(jiao)于(yu)精密(mi)行(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)(su)機(ji)傳動(dong)(dong)(dong)(dong)(dong)(dong)(dong)精度(du)要(yao)低些(xie)。