具體參數

混凝土拖(tuo)泵支重輪(lun)部件上有一配對錐(zhui)齒(chi)輪(lun)，其中一個錐(zhui)齒(chi)輪(lun)結構如圖1，材料為(wei)(wei)20CrMnTi，該(gai)齒(chi) 輪(lun)的主要(yao)技術參數(shu)(shu)為(wei)(wei)：大端端面模(mo)數(shu)(shu)為(wei)(wei)4、齒(chi)數(shu)(shu)20、齒(chi)形角為(wei)(wei)20°、切向變(bian)位系數(shu)(shu)為(wei)(wei)0、徑向變(bian)位系數(shu)(shu) 為(wei)(wei)-0.27、大端齒(chi)高(gao)0.8mm、精度等級為(wei)(wei)8CB GB11365。由于(yu)齒(chi)面硬度要(yao)求為(wei)(wei)HRC56~64，因此，齒(chi)輪(lun)需要(yao)進行滲(shen)碳淬火處理(li)，滲(shen)層深度要(yao)求為(wei)(wei)0.8-1.2mm。

從技(ji)術要求(qiu)和(he)精度等級來看(kan)，該齒(chi)(chi)輪(lun)的加(jia)(jia)(jia)工(gong)(gong)(gong)精度 等級要求(qiu)不(bu)高(gao)，要確保(bao)該零件的加(jia)(jia)(jia)工(gong)(gong)(gong)質量，關(guan)鍵在于(yu)解決好錐(zhui)齒(chi)(chi)加(jia)(jia)(jia)工(gong)(gong)(gong)和(he)熱(re)(re)處理(li)(li)工(gong)(gong)(gong)藝環節，由于(yu)該零件 屬于(yu)試(shi)制(zhi)階(jie)段，為降(jiang)低(di)加(jia)(jia)(jia)工(gong)(gong)(gong)成本(ben)，我們決定在臥(wo)式銑(xian)床上采用成形齒(chi)(chi)輪(lun)銑(xian)刀銑(xian)齒(chi)(chi)法加(jia)(jia)(jia)工(gong)(gong)(gong)該錐(zhui)齒(chi)(chi)輪(lun)，并(bing)通過制(zhi)訂合(he)理(li)(li)的熱(re)(re)處理(li)(li)工(gong)(gong)(gong)藝方(fang)法和(he)參數來保(bao)證該齒(chi)(chi)輪(lun)的加(jia)(jia)(jia)工(gong)(gong)(gong)質量。