具體參數

混凝土拖(tuo)泵支重輪(lun)(lun)部件上有一(yi)配對錐齒(chi)輪(lun)(lun)，其中一(yi)個(ge)錐齒(chi)輪(lun)(lun)結構(gou)如(ru)圖1，材(cai)料為(wei)(wei)(wei)20CrMnTi，該(gai)齒(chi) 輪(lun)(lun)的主要(yao)技術參數(shu)(shu)為(wei)(wei)(wei)：大(da)端端面(mian)模數(shu)(shu)為(wei)(wei)(wei)4、齒(chi)數(shu)(shu)20、齒(chi)形角為(wei)(wei)(wei)20°、切(qie)向變(bian)位系數(shu)(shu)為(wei)(wei)(wei)0、徑向變(bian)位系數(shu)(shu) 為(wei)(wei)(wei)-0.27、大(da)端齒(chi)高0.8mm、精度(du)等級為(wei)(wei)(wei)8CB GB11365。由于齒(chi)面(mian)硬度(du)要(yao)求為(wei)(wei)(wei)HRC56~64，因此，齒(chi)輪(lun)(lun)需要(yao)進行滲碳淬火處理，滲層深度(du)要(yao)求為(wei)(wei)(wei)0.8-1.2mm。

從(cong)技術要(yao)(yao)求和(he)精(jing)度等級來看(kan)，該齒(chi)輪(lun)(lun)的(de)加(jia)工(gong)(gong)精(jing)度 等級要(yao)(yao)求不高，要(yao)(yao)確保該零件的(de)加(jia)工(gong)(gong)質(zhi)量，關鍵在于(yu)(yu)解決好錐齒(chi)加(jia)工(gong)(gong)和(he)熱處理(li)工(gong)(gong)藝(yi)環節，由(you)于(yu)(yu)該零件 屬于(yu)(yu)試制(zhi)階段，為(wei)降低加(jia)工(gong)(gong)成(cheng)(cheng)本，我們決定在臥(wo)式(shi)銑床上(shang)采用成(cheng)(cheng)形齒(chi)輪(lun)(lun)銑刀銑齒(chi)法加(jia)工(gong)(gong)該錐齒(chi)輪(lun)(lun)，并通過制(zhi)訂合(he)理(li)的(de)熱處理(li)工(gong)(gong)藝(yi)方法和(he)參數來保證該齒(chi)輪(lun)(lun)的(de)加(jia)工(gong)(gong)質(zhi)量。