拖(tuo)泵制(zhi)造(zao)工藝(yi)

錐(zhui)齒輪(lun)加工工藝(yi)流程和難點控(kong)制(zhi)

為確保齒(chi)輪(lun)熱處(chu)理(li)(li)時(shi)(shi)，能夠(gou)減(jian)小(xiao)變形(xing)并(bing)獲得均勻的組(zu)織和較好(hao)的機(ji)(ji)械性能，在(zai)機(ji)(ji)加(jia)工(gong)(gong)前，先(xian)(xian) 對齒(chi)坯進(jin)(jin)(jin)(jin)行(xing)高溫(wen)正(zheng)火(huo)預(yu)處(chu)理(li)(li)，可(ke)以使(shi)組(zu)織得到細化(hua)，并(bing)減(jian)小(xiao)滲(shen)碳淬火(huo)時(shi)(shi)零件的變形(xing)，同時(shi)(shi)還有利于 提高切(qie)削(xue)性能。正(zheng)火(huo)后(hou)轉機(ji)(ji)加(jia)工(gong)(gong)，先(xian)(xian)在(zai)車床(chuang)上(shang)對齒(chi)坯外圓、端面進(jin)(jin)(jin)(jin)行(xing)粗、精加(jia)工(gong)(gong)后(hou)，在(zai)臥式銑(xian)床(chuang)上(shang)進(jin)(jin)(jin)(jin) 行(xing)銑(xian)齒(chi)，然后(hou)在(zai)插(cha)(cha)床(chuang)上(shang)插(cha)(cha)鍵(jian)槽(cao)(cao)，全(quan)部(bu)機(ji)(ji)加(jia)工(gong)(gong)完(wan)成后(hou)，進(jin)(jin)(jin)(jin)行(xing)滲(shen)碳淬火(huo)和低溫(wen)回(hui)火(huo)處(chu)理(li)(li)，進(jin)(jin)(jin)(jin)行(xing)后(hou)序處(chu) 理(li)(li)。該零件的工(gong)(gong)藝流程為：正(zheng)火(huo)→車削(xue)→銑(xian)齒(chi)→插(cha)(cha)鍵(jian)槽(cao)(cao)→滲(shen)碳淬火(huo)及退火(huo)→噴砂→防(fang)銹處(chu)理(li)(li)。工(gong)(gong)藝難點為銑(xian)齒(chi)和熱處(chu)理(li)(li)工(gong)(gong)序。