行星減速機是一種應用非常廣泛的減速傳動設備，按照傳動精度分為精密行星減速機、普通行星減速機，兩者之間在傳動精度上市由差別的；在了解兩種行星減速機之間的區別，先了解行星減速機傳動精度和級數概念；

什么(me)是行(xing)星減(jian)速(su)機傳動精度？行(xing)星減(jian)速(su)機傳動精度也稱為(wei)回(hui)程(cheng)(cheng)間(jian)隙(xi)(xi)，將輸(shu)(shu)出端(duan)固(gu)定，輸(shu)(shu)入端(duan)順時(shi)針(zhen)和逆時(shi)針(zhen)方向旋(xuan)轉，使輸(shu)(shu)出端(duan)產(chan)生額定扭矩+-2%扭矩時(shi)，減(jian)速(su)機輸(shu)(shu)入端(duan)有一個微(wei)小的(de)角位移(yi)(yi)，此角位移(yi)(yi)即(ji)為(wei)回(hui)程(cheng)(cheng)間(jian)隙(xi)(xi)。單(dan)位是“弧分”，即(ji)一度的(de)六(liu)十分之一。通常的(de)回(hui)程(cheng)(cheng)間(jian)隙(xi)(xi)值(zhi)均(jun)指減(jian)速(su)機的(de)輸(shu)(shu)出端(duan)。

什么是行星減速(su)機級(ji)數？行星減速(su)機級(ji)數通(tong)常分(fen)為三(san)種等(deng)級(ji)：一級(ji)減速(su)（一般(ban)為小于(yu)10：1）、二級(ji)減速(su)（一般(ban)為大于(yu)10：1而小于(yu)等(deng)于(yu)200：1）、三(san)級(ji)減速(su)（有(you)的品牌沒有(you)第三(san)級(ji)，最大減速(su)比(bi)做(zuo)到100：1，一般(ban)劃(hua)分(fen)原則就(jiu)是大于(yu)100：1），但微型(xing)行星減速(su)器可做(zuo)到五級(ji)，減速(su)比(bi)最大做(zuo)到4592：1；

精(jing)(jing)密行(xing)(xing)星減(jian)速機(ji)(ji)是相(xiang)(xiang)比較于普通行(xing)(xing)星減(jian)速機(ji)(ji)的傳(chuan)動(dong)精(jing)(jing)度(du)要(yao)高(gao)，傳(chuan)動(dong)效(xiao)率高(gao)等特(te)點；精(jing)(jing)密行(xing)(xing)星減(jian)速機(ji)(ji)的主要(yao)傳(chuan)動(dong)結構為：行(xing)(xing)星輪(lun)，太陽(yang)輪(lun)，內齒圈等傳(chuan)動(dong)結構組裝而成。相(xiang)(xiang)對(dui)于其它普通行(xing)(xing)星減(jian)速機(ji)(ji)，精(jing)(jing)密行(xing)(xing)星減(jian)速機(ji)(ji)具有高(gao)剛性(xing)、高(gao)精(jing)(jing)度(du)（單級(ji)可(ke)做到1分以內）、高(gao)傳(chuan)動(dong)效(xiao)率(單級(ji)在(zai)(zai)97%-98%)、高(gao)的扭矩(ju)/體積比、終身免維護等特(te)點。可(ke)安裝在(zai)(zai)直流(liu)有刷電(dian)(dian)機(ji)(ji)、直流(liu)無(wu)刷電(dian)(dian)機(ji)(ji)、步進電(dian)(dian)機(ji)(ji)、空心杯電(dian)(dian)機(ji)(ji)中(zhong)，用來(lai)降低轉速，提升(sheng)扭矩(ju)，匹(pi)配慣量。

普(pu)通行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)是一種(zhong)(zhong)用途廣(guang)泛的(de)工(gong)業(ye)產品，可以降低(di)(di)電(dian)(dian)機(ji)(ji)的(de)轉(zhuan)速(su)，同(tong)時增大(da)輸出(chu)(chu)(chu)轉(zhuan)矩(ju)。行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)是一種(zhong)(zhong)工(gong)業(ye)產品，行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)是一種(zhong)(zhong)傳(chuan)達(da)機(ji)(ji)構(gou)，其結構(gou)由(you)一個內齒(chi)(chi)(chi)(chi)(chi)(chi)環(huan)緊(jin)密(mi)結合于(yu)(yu)(yu)(yu)齒(chi)(chi)(chi)(chi)(chi)(chi)箱殼體(ti)(ti)上，環(huan)齒(chi)(chi)(chi)(chi)(chi)(chi)中心(xin)有(you)一個自外(wai)部動(dong)(dong)(dong)力(li)(li)所(suo)驅(qu)(qu)動(dong)(dong)(dong)之(zhi)(zhi)(zhi)(zhi)(zhi)太(tai)陽齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)，介于(yu)(yu)(yu)(yu)兩(liang)者之(zhi)(zhi)(zhi)(zhi)(zhi)間(jian)有(you)一組(zu)由(you)三(san)顆(ke)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)等分組(zu)合于(yu)(yu)(yu)(yu)托(tuo)盤(pan)(pan)上之(zhi)(zhi)(zhi)(zhi)(zhi)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)組(zu)，該(gai)組(zu)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)依靠(kao)著出(chu)(chu)(chu)力(li)(li)軸(zhou)、內齒(chi)(chi)(chi)(chi)(chi)(chi)環(huan)及太(tai)陽齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)支撐浮游于(yu)(yu)(yu)(yu)期間(jian)；當入(ru)力(li)(li)側動(dong)(dong)(dong)力(li)(li)驅(qu)(qu)動(dong)(dong)(dong)太(tai)陽齒(chi)(chi)(chi)(chi)(chi)(chi)時，可帶(dai)(dai)動(dong)(dong)(dong)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)自轉(zhuan)，并依循(xun)著內齒(chi)(chi)(chi)(chi)(chi)(chi)環(huan)之(zhi)(zhi)(zhi)(zhi)(zhi)軌(gui)跡沿著中心(xin)公(gong)轉(zhuan)，行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)之(zhi)(zhi)(zhi)(zhi)(zhi)旋轉(zhuan)帶(dai)(dai)動(dong)(dong)(dong)連結于(yu)(yu)(yu)(yu)托(tuo)盤(pan)(pan)之(zhi)(zhi)(zhi)(zhi)(zhi)出(chu)(chu)(chu)力(li)(li)軸(zhou)輸出(chu)(chu)(chu)動(dong)(dong)(dong)力(li)(li)。利用齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)的(de)速(su)度轉(zhuan)換器(qi)，將電(dian)(dian)機(ji)(ji)（馬達(da)）的(de)回(hui)轉(zhuan)數減(jian)(jian)(jian)速(su)到(dao)所(suo)要的(de)回(hui)轉(zhuan)數，并得到(dao)較(jiao)大(da)轉(zhuan)矩(ju)的(de)機(ji)(ji)構(gou)。由(you)一個內齒(chi)(chi)(chi)(chi)(chi)(chi)環(huan)(A)緊(jin)密(mi)結合于(yu)(yu)(yu)(yu)齒(chi)(chi)(chi)(chi)(chi)(chi)箱殼體(ti)(ti)上，環(huan)齒(chi)(chi)(chi)(chi)(chi)(chi)中心(xin)有(you)一個自外(wai)部動(dong)(dong)(dong)力(li)(li)所(suo)驅(qu)(qu)動(dong)(dong)(dong)之(zhi)(zhi)(zhi)(zhi)(zhi)太(tai)陽齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)(B)，介于(yu)(yu)(yu)(yu)兩(liang)者之(zhi)(zhi)(zhi)(zhi)(zhi)間(jian)有(you)一組(zu)由(you)三(san)顆(ke)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)等分組(zu)合于(yu)(yu)(yu)(yu)托(tuo)盤(pan)(pan)上之(zhi)(zhi)(zhi)(zhi)(zhi)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)組(zu)(C)該(gai)組(zu)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)依靠(kao)著出(chu)(chu)(chu)力(li)(li)軸(zhou)、內齒(chi)(chi)(chi)(chi)(chi)(chi)環(huan)及太(tai)陽齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)支撐浮游于(yu)(yu)(yu)(yu)期間(jian)；行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)當入(ru)力(li)(li)側動(dong)(dong)(dong)力(li)(li)驅(qu)(qu)動(dong)(dong)(dong)太(tai)陽齒(chi)(chi)(chi)(chi)(chi)(chi)時，可帶(dai)(dai)動(dong)(dong)(dong)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)(lun)(lun)(lun)自轉(zhuan)，并依循(xun)著內齒(chi)(chi)(chi)(chi)(chi)(chi)環(huan)之(zhi)(zhi)(zhi)(zhi)(zhi)軌(gui)跡沿著中心(xin)公(gong)轉(zhuan)，游星(xing)(xing)(xing)(xing)之(zhi)(zhi)(zhi)(zhi)(zhi)旋轉(zhuan)帶(dai)(dai)動(dong)(dong)(dong)連結于(yu)(yu)(yu)(yu)托(tuo)盤(pan)(pan)之(zhi)(zhi)(zhi)(zhi)(zhi)出(chu)(chu)(chu)力(li)(li)軸(zhou)輸出(chu)(chu)(chu)動(dong)(dong)(dong)力(li)(li)。行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)具備重量輕、體(ti)(ti)積小、傳(chuan)動(dong)(dong)(dong)比(bi)范(fan)圍大(da)、效率高、運轉(zhuan)平(ping)穩、噪聲低(di)(di)適應性強等特(te)點，行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)相比(bi)較(jiao)于(yu)(yu)(yu)(yu)精(jing)密(mi)行(xing)(xing)(xing)(xing)星(xing)(xing)(xing)(xing)減(jian)(jian)(jian)速(su)機(ji)(ji)傳(chuan)動(dong)(dong)(dong)精(jing)度要低(di)(di)些(xie)。