具體參數

混(hun)凝土拖泵(beng)支重(zhong)輪(lun)部(bu)件上有一配對錐齒(chi)(chi)輪(lun)，其中一個錐齒(chi)(chi)輪(lun)結(jie)構如圖1，材料為(wei)(wei)20CrMnTi，該齒(chi)(chi) 輪(lun)的(de)主要(yao)技術(shu)參數(shu)(shu)為(wei)(wei)：大端端面模數(shu)(shu)為(wei)(wei)4、齒(chi)(chi)數(shu)(shu)20、齒(chi)(chi)形角(jiao)為(wei)(wei)20°、切向變位系數(shu)(shu)為(wei)(wei)0、徑(jing)向變位系數(shu)(shu) 為(wei)(wei)-0.27、大端齒(chi)(chi)高(gao)0.8mm、精(jing)度等級為(wei)(wei)8CB GB11365。由于齒(chi)(chi)面硬度要(yao)求為(wei)(wei)HRC56~64，因此(ci)，齒(chi)(chi)輪(lun)需(xu)要(yao)進行(xing)滲碳淬火處理，滲層(ceng)深度要(yao)求為(wei)(wei)0.8-1.2mm。

從(cong)技術(shu)要求和精(jing)度(du)等(deng)級來(lai)看，該齒輪的加(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)度(du) 等(deng)級要求不高，要確保該零件的加(jia)(jia)工(gong)(gong)(gong)(gong)質量，關鍵在(zai)于解決好錐(zhui)齒加(jia)(jia)工(gong)(gong)(gong)(gong)和熱處理(li)(li)工(gong)(gong)(gong)(gong)藝環節(jie)，由(you)于該零件 屬于試制階段，為降低(di)加(jia)(jia)工(gong)(gong)(gong)(gong)成(cheng)本(ben)，我們決定(ding)在(zai)臥(wo)式銑床上采用(yong)成(cheng)形齒輪銑刀(dao)銑齒法加(jia)(jia)工(gong)(gong)(gong)(gong)該錐(zhui)齒輪，并通過制訂合理(li)(li)的熱處理(li)(li)工(gong)(gong)(gong)(gong)藝方法和參數來(lai)保證(zheng)該齒輪的加(jia)(jia)工(gong)(gong)(gong)(gong)質量。