具體參數

混凝(ning)土拖泵支(zhi)重輪(lun)(lun)部件上有(you)一(yi)配對(dui)錐(zhui)(zhui)齒(chi)輪(lun)(lun)，其中一(yi)個錐(zhui)(zhui)齒(chi)輪(lun)(lun)結構(gou)如圖1，材料為20CrMnTi，該齒(chi) 輪(lun)(lun)的(de)主要(yao)技術(shu)參(can)數(shu)為：大(da)端(duan)(duan)端(duan)(duan)面模(mo)數(shu)為4、齒(chi)數(shu)20、齒(chi)形角為20°、切向變(bian)位系數(shu)為0、徑向變(bian)位系數(shu) 為-0.27、大(da)端(duan)(duan)齒(chi)高0.8mm、精度(du)(du)等級(ji)為8CB GB11365。由于齒(chi)面硬度(du)(du)要(yao)求(qiu)為HRC56~64，因此，齒(chi)輪(lun)(lun)需(xu)要(yao)進行(xing)滲(shen)碳淬火處理，滲(shen)層深度(du)(du)要(yao)求(qiu)為0.8-1.2mm。

從技術要求和精(jing)度(du)等(deng)級來(lai)看(kan)，該(gai)齒(chi)(chi)輪(lun)(lun)的加(jia)(jia)(jia)工(gong)(gong)(gong)精(jing)度(du) 等(deng)級要求不高，要確保(bao)該(gai)零(ling)件(jian)的加(jia)(jia)(jia)工(gong)(gong)(gong)質量，關鍵在于解(jie)決好(hao)錐齒(chi)(chi)加(jia)(jia)(jia)工(gong)(gong)(gong)和熱處(chu)理(li)工(gong)(gong)(gong)藝(yi)(yi)環節，由于該(gai)零(ling)件(jian) 屬于試制階段，為降(jiang)低加(jia)(jia)(jia)工(gong)(gong)(gong)成本，我們決定(ding)在臥(wo)式(shi)銑床(chuang)上采用成形(xing)齒(chi)(chi)輪(lun)(lun)銑刀銑齒(chi)(chi)法加(jia)(jia)(jia)工(gong)(gong)(gong)該(gai)錐齒(chi)(chi)輪(lun)(lun)，并(bing)通過制訂合理(li)的熱處(chu)理(li)工(gong)(gong)(gong)藝(yi)(yi)方法和參數來(lai)保(bao)證該(gai)齒(chi)(chi)輪(lun)(lun)的加(jia)(jia)(jia)工(gong)(gong)(gong)質量。