拖泵制(zhi)造工藝(yi)

錐(zhui)齒輪(lun)加工工藝流程和難點(dian)控(kong)制

為確保齒(chi)輪熱(re)(re)處理時(shi)，能(neng)夠減小(xiao)(xiao)變形并獲得均勻的(de)組(zu)(zu)織和較(jiao)好(hao)的(de)機械性能(neng)，在機加工(gong)前，先(xian)(xian) 對齒(chi)坯(pi)(pi)進(jin)(jin)行(xing)(xing)(xing)(xing)高(gao)溫(wen)正(zheng)火(huo)(huo)(huo)預處理，可以(yi)使組(zu)(zu)織得到(dao)細(xi)化，并減小(xiao)(xiao)滲碳淬火(huo)(huo)(huo)時(shi)零(ling)件的(de)變形，同(tong)時(shi)還有利于 提(ti)高(gao)切削性能(neng)。正(zheng)火(huo)(huo)(huo)后轉(zhuan)機加工(gong)，先(xian)(xian)在車床(chuang)上對齒(chi)坯(pi)(pi)外圓、端面進(jin)(jin)行(xing)(xing)(xing)(xing)粗、精加工(gong)后，在臥式銑床(chuang)上進(jin)(jin) 行(xing)(xing)(xing)(xing)銑齒(chi)，然后在插(cha)床(chuang)上插(cha)鍵槽，全部(bu)機加工(gong)完成后，進(jin)(jin)行(xing)(xing)(xing)(xing)滲碳淬火(huo)(huo)(huo)和低(di)溫(wen)回火(huo)(huo)(huo)處理，進(jin)(jin)行(xing)(xing)(xing)(xing)后序(xu)(xu)處 理。該零(ling)件的(de)工(gong)藝(yi)流程為：正(zheng)火(huo)(huo)(huo)→車削→銑齒(chi)→插(cha)鍵槽→滲碳淬火(huo)(huo)(huo)及退火(huo)(huo)(huo)→噴砂(sha)→防銹處理。工(gong)藝(yi)難(nan)點為銑齒(chi)和熱(re)(re)處理工(gong)序(xu)(xu)。