具體參數

混凝土拖泵支重輪(lun)部件(jian)上有一配對錐齒(chi)(chi)輪(lun)，其中一個錐齒(chi)(chi)輪(lun)結構(gou)如圖(tu)1，材料為(wei)(wei)(wei)20CrMnTi，該齒(chi)(chi) 輪(lun)的主要(yao)(yao)技術參數為(wei)(wei)(wei)：大端(duan)(duan)端(duan)(duan)面模(mo)數為(wei)(wei)(wei)4、齒(chi)(chi)數20、齒(chi)(chi)形角為(wei)(wei)(wei)20°、切向(xiang)變位系數為(wei)(wei)(wei)0、徑向(xiang)變位系數 為(wei)(wei)(wei)-0.27、大端(duan)(duan)齒(chi)(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)8CB GB11365。由(you)于齒(chi)(chi)面硬(ying)度(du)要(yao)(yao)求為(wei)(wei)(wei)HRC56~64，因此，齒(chi)(chi)輪(lun)需要(yao)(yao)進行滲碳淬火(huo)處理，滲層深度(du)要(yao)(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從技(ji)術(shu)要(yao)(yao)求和(he)精(jing)度等級來看(kan)，該齒(chi)(chi)輪的(de)加(jia)工(gong)(gong)精(jing)度 等級要(yao)(yao)求不高，要(yao)(yao)確保該零(ling)件的(de)加(jia)工(gong)(gong)質量，關鍵(jian)在于解(jie)決好錐(zhui)齒(chi)(chi)加(jia)工(gong)(gong)和(he)熱(re)處理工(gong)(gong)藝環(huan)節，由于該零(ling)件 屬(shu)于試制階段，為降低(di)加(jia)工(gong)(gong)成本，我們決定在臥(wo)式銑床上采用成形齒(chi)(chi)輪銑刀銑齒(chi)(chi)法加(jia)工(gong)(gong)該錐(zhui)齒(chi)(chi)輪，并通過制訂(ding)合(he)理的(de)熱(re)處理工(gong)(gong)藝方法和(he)參數來保證(zheng)該齒(chi)(chi)輪的(de)加(jia)工(gong)(gong)質量。