直(zhi)齒(chi)(chi)輪傳動(dong)(dong)(dong)依靠主動(dong)(dong)(dong)齒(chi)(chi)輪和從動(dong)(dong)(dong)齒(chi)(chi)輪的(de)嚙合(he)來(lai)傳遞運(yun)動(dong)(dong)(dong)和動(dong)(dong)(dong)力。這是一個在兩個平行軸之(zhi)間驅動(dong)(dong)(dong)的(de)齒(chi)(chi)輪。直(zhi)圓柱齒(chi)(chi)輪易(yi)于加工，能生(sheng)(sheng)產(chan)高精度齒(chi)(chi)輪，在傳動(dong)(dong)(dong)中不產(chan)生(sheng)(sheng)推力(軸向(xiang)力)，是實(shi)際生(sheng)(sheng)產(chan)和使用中最常見(jian)的(de)齒(chi)(chi)輪之(zhi)一。

齒輪傳動具有運行可(ke)靠、傳動比恒定、效(xiao)率高(gao)、能(neng)在空間(jian)任意(yi)兩軸間(jian)傳遞運動、適應(ying)性廣的優(you)點。