拖泵制(zhi)造(zao)工藝

錐齒輪加工(gong)工(gong)藝(yi)流程(cheng)和難點控制(zhi)

為(wei)確保齒(chi)(chi)輪熱(re)處理(li)時，能(neng)夠減小(xiao)變(bian)(bian)形(xing)并(bing)獲得均勻的(de)組(zu)織和較好(hao)的(de)機械性(xing)能(neng)，在機加(jia)工(gong)(gong)(gong)前(qian)，先 對(dui)齒(chi)(chi)坯進(jin)行(xing)高(gao)溫正(zheng)火預處理(li)，可以(yi)使組(zu)織得到細化，并(bing)減小(xiao)滲碳淬(cui)火時零件的(de)變(bian)(bian)形(xing)，同時還有利于 提高(gao)切削性(xing)能(neng)。正(zheng)火后(hou)(hou)轉(zhuan)機加(jia)工(gong)(gong)(gong)，先在車床上對(dui)齒(chi)(chi)坯外圓、端面進(jin)行(xing)粗、精加(jia)工(gong)(gong)(gong)后(hou)(hou)，在臥式(shi)銑(xian)(xian)床上進(jin) 行(xing)銑(xian)(xian)齒(chi)(chi)，然后(hou)(hou)在插床上插鍵槽，全部機加(jia)工(gong)(gong)(gong)完成后(hou)(hou)，進(jin)行(xing)滲碳淬(cui)火和低溫回火處理(li)，進(jin)行(xing)后(hou)(hou)序處 理(li)。該零件的(de)工(gong)(gong)(gong)藝(yi)(yi)流程為(wei)：正(zheng)火→車削→銑(xian)(xian)齒(chi)(chi)→插鍵槽→滲碳淬(cui)火及退火→噴(pen)砂(sha)→防(fang)銹處理(li)。工(gong)(gong)(gong)藝(yi)(yi)難點為(wei)銑(xian)(xian)齒(chi)(chi)和熱(re)處理(li)工(gong)(gong)(gong)序。