直齒(chi)輪(lun)(lun)傳動(dong)(dong)(dong)依靠主動(dong)(dong)(dong)齒(chi)輪(lun)(lun)和從動(dong)(dong)(dong)齒(chi)輪(lun)(lun)的嚙(nie)合來傳遞運動(dong)(dong)(dong)和動(dong)(dong)(dong)力。這(zhe)是(shi)一個在兩個平行軸之(zhi)間驅動(dong)(dong)(dong)的齒(chi)輪(lun)(lun)。直圓柱齒(chi)輪(lun)(lun)易于加工(gong)，能生(sheng)產(chan)(chan)高精度齒(chi)輪(lun)(lun)，在傳動(dong)(dong)(dong)中(zhong)不產(chan)(chan)生(sheng)推力(軸向力)，是(shi)實際生(sheng)產(chan)(chan)和使用中(zhong)最常見的齒(chi)輪(lun)(lun)之(zhi)一。

齒輪傳(chuan)動(dong)具(ju)有運(yun)行可靠、傳(chuan)動(dong)比(bi)恒定、效率高(gao)、能在空間任意兩軸間傳(chuan)遞運(yun)動(dong)、適應性廣(guang)的優點。