具體參數

混凝土(tu)拖(tuo)泵(beng)支重輪(lun)部件上有(you)一配對錐齒輪(lun)，其中一個錐齒輪(lun)結構如圖(tu)1，材料為(wei)(wei)20CrMnTi，該齒 輪(lun)的主要(yao)(yao)(yao)技術參數(shu)為(wei)(wei)：大端端面(mian)模數(shu)為(wei)(wei)4、齒數(shu)20、齒形(xing)角為(wei)(wei)20°、切(qie)向(xiang)變(bian)位(wei)系數(shu)為(wei)(wei)0、徑向(xiang)變(bian)位(wei)系數(shu) 為(wei)(wei)-0.27、大端齒高0.8mm、精度等級為(wei)(wei)8CB GB11365。由于齒面(mian)硬(ying)度要(yao)(yao)(yao)求為(wei)(wei)HRC56~64，因此，齒輪(lun)需要(yao)(yao)(yao)進行(xing)滲(shen)(shen)碳淬火處理，滲(shen)(shen)層深(shen)度要(yao)(yao)(yao)求為(wei)(wei)0.8-1.2mm。

從技術要求和精度等級來看，該齒(chi)(chi)(chi)輪(lun)(lun)的加(jia)(jia)工(gong)(gong)精度 等級要求不高(gao)，要確保該零(ling)件(jian)的加(jia)(jia)工(gong)(gong)質量，關鍵(jian)在于(yu)解(jie)決好錐齒(chi)(chi)(chi)加(jia)(jia)工(gong)(gong)和熱處(chu)理(li)工(gong)(gong)藝環節(jie)，由于(yu)該零(ling)件(jian) 屬于(yu)試制階段，為降低加(jia)(jia)工(gong)(gong)成本，我(wo)們決定在臥式銑床上采用成形齒(chi)(chi)(chi)輪(lun)(lun)銑刀銑齒(chi)(chi)(chi)法加(jia)(jia)工(gong)(gong)該錐齒(chi)(chi)(chi)輪(lun)(lun)，并通(tong)過制訂(ding)合理(li)的熱處(chu)理(li)工(gong)(gong)藝方法和參數(shu)來保證該齒(chi)(chi)(chi)輪(lun)(lun)的加(jia)(jia)工(gong)(gong)質量。