沖擊鉆(zhan)工(gong)作(zuo)(zuo)原理(li)：沖擊運(yun)動(dong)(dong)(dong)是由電動(dong)(dong)(dong)機經齒輪(lun)傳(chuan)(chuan)動(dong)(dong)(dong)，帶(dai)動(dong)(dong)(dong)曲柄、連桿，使壓(ya)氣活(huo)塞在沖擊活(huo)塞缸(gang)中做(zuo)往復(fu)運(yun)動(dong)(dong)(dong)，壓(ya)縮氣體推動(dong)(dong)(dong)沖擊活(huo)塞缸(gang)錘(chui)頭以較高(gao)的(de)沖擊頻率(lv)打擊工(gong)具(ju)的(de)尾(wei)(wei)端(duan)，使工(gong)具(ju)向前(qian)沖打。旋轉(zhuan)(zhuan)運(yun)動(dong)(dong)(dong)為(wei)一般的(de)齒輪(lun)傳(chuan)(chuan)動(dong)(dong)(dong)，由電動(dong)(dong)(dong)機經齒輪(lun)傳(chuan)(chuan)動(dong)(dong)(dong)而帶(dai)動(dong)(dong)(dong)六角形的(de)工(gong)具(ju)尾(wei)(wei)端(duan)使工(gong)具(ju)產生旋轉(zhuan)(zhuan)運(yun)動(dong)(dong)(dong)的(de)。當(dang)超(chao)負荷時離(li)合器打滑，起到(dao)了安全保護作(zuo)(zuo)用。當(dang)使用硬質合金鉆(zhan)頭在磚(zhuan)頭、混凝土上打孔時，鉆(zhan)頭旋轉(zhuan)(zhuan)并沖擊，操作(zuo)(zuo)者無(wu)需施加壓(ya)力;當(dang)用于開槽(cao)、夯實(shi)、打毛等工(gong)作(zuo)(zuo)時，放(fang)松(song)離(li)合器，工(gong)具(ju)不進行旋轉(zhuan)(zhuan)，只做(zuo)沖擊運(yun)動(dong)(dong)(dong)。
這種以空氣(qi)作(zuo)為壓氣(qi)活塞與沖擊缸頭的(de)中間介(jie)質，形成兩者(zhe)彈性結(jie)合(he)，因而減小(xiao)了對工(gong)作(zuo)機(ji)構的(de)有(you)害作(zuo)用，使工(gong)具具有(you)結(jie)構簡單、使用壽(shou)命長、加(jia)工(gong)方(fang)便等優點。
