具體參數

混(hun)凝(ning)土拖泵支(zhi)重輪(lun)(lun)(lun)部(bu)件上(shang)有(you)一配(pei)對錐(zhui)齒輪(lun)(lun)(lun)，其中一個錐(zhui)齒輪(lun)(lun)(lun)結構如圖1，材料(liao)為(wei)(wei)(wei)20CrMnTi，該齒 輪(lun)(lun)(lun)的主要(yao)(yao)技術參數(shu)為(wei)(wei)(wei)：大端端面模數(shu)為(wei)(wei)(wei)4、齒數(shu)20、齒形(xing)角為(wei)(wei)(wei)20°、切向變位系(xi)數(shu)為(wei)(wei)(wei)0、徑向變位系(xi)數(shu) 為(wei)(wei)(wei)-0.27、大端齒高0.8mm、精度等級為(wei)(wei)(wei)8CB GB11365。由于齒面硬度要(yao)(yao)求(qiu)為(wei)(wei)(wei)HRC56~64，因(yin)此，齒輪(lun)(lun)(lun)需要(yao)(yao)進行滲碳淬火處(chu)理，滲層深度要(yao)(yao)求(qiu)為(wei)(wei)(wei)0.8-1.2mm。

從(cong)技(ji)術要(yao)求和(he)精(jing)(jing)度(du)等(deng)級來(lai)看，該齒(chi)輪(lun)的加工(gong)(gong)精(jing)(jing)度(du) 等(deng)級要(yao)求不高，要(yao)確保該零件的加工(gong)(gong)質量，關鍵在于(yu)(yu)解決好(hao)錐齒(chi)加工(gong)(gong)和(he)熱處理(li)(li)工(gong)(gong)藝環節，由于(yu)(yu)該零件 屬于(yu)(yu)試制階段，為降低加工(gong)(gong)成本(ben)，我們決定(ding)在臥(wo)式銑床(chuang)上(shang)采用成形齒(chi)輪(lun)銑刀銑齒(chi)法加工(gong)(gong)該錐齒(chi)輪(lun)，并通過(guo)制訂合理(li)(li)的熱處理(li)(li)工(gong)(gong)藝方法和(he)參數來(lai)保證該齒(chi)輪(lun)的加工(gong)(gong)質量。