直(zhi)齒(chi)(chi)輪傳(chuan)動(dong)(dong)依(yi)靠(kao)主(zhu)動(dong)(dong)齒(chi)(chi)輪和從(cong)動(dong)(dong)齒(chi)(chi)輪的嚙合(he)來(lai)傳(chuan)遞運動(dong)(dong)和動(dong)(dong)力。這(zhe)是(shi)一個在(zai)兩個平行軸(zhou)之間驅動(dong)(dong)的齒(chi)(chi)輪。直(zhi)圓柱齒(chi)(chi)輪易于(yu)加工，能生產(chan)(chan)高精度齒(chi)(chi)輪，在(zai)傳(chuan)動(dong)(dong)中不產(chan)(chan)生推力(軸(zhou)向力)，是(shi)實際生產(chan)(chan)和使用中最常見的齒(chi)(chi)輪之一。

齒輪傳(chuan)動具有運行可靠、傳(chuan)動比恒定、效率高(gao)、能在(zai)空(kong)間任意兩軸(zhou)間傳(chuan)遞運動、適應(ying)性(xing)廣的(de)優(you)點。