直齒(chi)(chi)輪(lun)(lun)傳動(dong)(dong)(dong)依靠主動(dong)(dong)(dong)齒(chi)(chi)輪(lun)(lun)和從(cong)動(dong)(dong)(dong)齒(chi)(chi)輪(lun)(lun)的(de)嚙(nie)合來傳遞運動(dong)(dong)(dong)和動(dong)(dong)(dong)力。這是一個(ge)在兩個(ge)平行軸之間驅(qu)動(dong)(dong)(dong)的(de)齒(chi)(chi)輪(lun)(lun)。直圓柱齒(chi)(chi)輪(lun)(lun)易于加工(gong)，能生(sheng)產高精度齒(chi)(chi)輪(lun)(lun)，在傳動(dong)(dong)(dong)中不產生(sheng)推力(軸向力)，是實際生(sheng)產和使用中最常(chang)見的(de)齒(chi)(chi)輪(lun)(lun)之一。

齒輪傳(chuan)動具有運行可靠、傳(chuan)動比恒定、效(xiao)率(lv)高、能在空間任意兩(liang)軸間傳(chuan)遞運動、適應性廣的優點。