直齒(chi)輪(lun)傳動(dong)(dong)(dong)依靠主動(dong)(dong)(dong)齒(chi)輪(lun)和從動(dong)(dong)(dong)齒(chi)輪(lun)的嚙合來傳遞運動(dong)(dong)(dong)和動(dong)(dong)(dong)力(li)(li)。這是(shi)一個在兩個平行軸(zhou)之間驅動(dong)(dong)(dong)的齒(chi)輪(lun)。直圓柱齒(chi)輪(lun)易于加工，能(neng)生產高精度齒(chi)輪(lun)，在傳動(dong)(dong)(dong)中不產生推力(li)(li)(軸(zhou)向(xiang)力(li)(li))，是(shi)實際生產和使用中最常見的齒(chi)輪(lun)之一。

齒輪傳(chuan)動具有運行可靠、傳(chuan)動比恒(heng)定、效率高、能在空間(jian)任意兩(liang)軸間(jian)傳(chuan)遞運動、適應性廣的優點。