拖泵制造工藝

錐齒輪(lun)加工工藝流程和難點(dian)控制

為確保齒(chi)(chi)輪(lun)熱處(chu)理(li)(li)時，能夠減小變形(xing)(xing)并(bing)獲(huo)得(de)均勻的組織和較好(hao)的機(ji)(ji)械性能，在(zai)機(ji)(ji)加工(gong)前，先 對(dui)齒(chi)(chi)坯進(jin)行(xing)(xing)高(gao)溫正火預處(chu)理(li)(li)，可以使組織得(de)到細化(hua)，并(bing)減小滲(shen)碳(tan)淬(cui)火時零件(jian)(jian)的變形(xing)(xing)，同時還有利于(yu) 提高(gao)切削性能。正火后(hou)轉(zhuan)機(ji)(ji)加工(gong)，先在(zai)車床(chuang)(chuang)(chuang)上對(dui)齒(chi)(chi)坯外圓(yuan)、端面進(jin)行(xing)(xing)粗、精加工(gong)后(hou)，在(zai)臥式銑(xian)床(chuang)(chuang)(chuang)上進(jin) 行(xing)(xing)銑(xian)齒(chi)(chi)，然后(hou)在(zai)插(cha)床(chuang)(chuang)(chuang)上插(cha)鍵槽(cao)，全部機(ji)(ji)加工(gong)完成后(hou)，進(jin)行(xing)(xing)滲(shen)碳(tan)淬(cui)火和低溫回火處(chu)理(li)(li)，進(jin)行(xing)(xing)后(hou)序處(chu) 理(li)(li)。該零件(jian)(jian)的工(gong)藝(yi)流(liu)程為：正火→車削→銑(xian)齒(chi)(chi)→插(cha)鍵槽(cao)→滲(shen)碳(tan)淬(cui)火及退火→噴砂→防銹處(chu)理(li)(li)。工(gong)藝(yi)難點(dian)為銑(xian)齒(chi)(chi)和熱處(chu)理(li)(li)工(gong)序。