具體參數

混凝土拖泵支重輪(lun)部件上有一(yi)配(pei)對錐齒(chi)(chi)(chi)(chi)輪(lun)，其中一(yi)個(ge)錐齒(chi)(chi)(chi)(chi)輪(lun)結構如圖1，材料(liao)為20CrMnTi，該齒(chi)(chi)(chi)(chi) 輪(lun)的主要(yao)技術(shu)參數(shu)為：大(da)端(duan)端(duan)面(mian)模數(shu)為4、齒(chi)(chi)(chi)(chi)數(shu)20、齒(chi)(chi)(chi)(chi)形角(jiao)為20°、切向變位(wei)系(xi)數(shu)為0、徑向變位(wei)系(xi)數(shu) 為-0.27、大(da)端(duan)齒(chi)(chi)(chi)(chi)高0.8mm、精度(du)等(deng)級為8CB GB11365。由(you)于齒(chi)(chi)(chi)(chi)面(mian)硬度(du)要(yao)求為HRC56~64，因此，齒(chi)(chi)(chi)(chi)輪(lun)需要(yao)進(jin)行滲(shen)碳淬火(huo)處理，滲(shen)層(ceng)深度(du)要(yao)求為0.8-1.2mm。

從(cong)技術要求和(he)精度等(deng)級來(lai)看，該齒(chi)輪(lun)的加(jia)(jia)工(gong)(gong)(gong)精度 等(deng)級要求不(bu)高，要確(que)保(bao)該零件的加(jia)(jia)工(gong)(gong)(gong)質(zhi)量，關鍵在于解決好錐(zhui)齒(chi)加(jia)(jia)工(gong)(gong)(gong)和(he)熱處(chu)理(li)(li)工(gong)(gong)(gong)藝(yi)環節，由(you)于該零件 屬于試制階(jie)段，為降低加(jia)(jia)工(gong)(gong)(gong)成本，我們決定在臥式銑床(chuang)上采用成形齒(chi)輪(lun)銑刀銑齒(chi)法(fa)加(jia)(jia)工(gong)(gong)(gong)該錐(zhui)齒(chi)輪(lun)，并通過制訂合理(li)(li)的熱處(chu)理(li)(li)工(gong)(gong)(gong)藝(yi)方法(fa)和(he)參數來(lai)保(bao)證該齒(chi)輪(lun)的加(jia)(jia)工(gong)(gong)(gong)質(zhi)量。